Ludwig VU, Adachi I, Matsuzawa T (2011). Visuoauditory mappings between high luminance and high pitch are shared by chimpanzees (Pan troglodytes) and humans. Proc Natl Acad Sci U S A. published ahead of print December 5, 2011, (DOI:10.1073/pnas.1112605108)

Christopher Flynn Martin, Dora Biro and Tetsuro Matsuzawa (2011). Chimpanzees' use of conspecific cues in matching-to-sample tasks: public information use in a fully automated testing environment. Animal Cognition Volume 14, Number 6, 893-902. Epub 2011 Jun 11. (DOI:10.1007/s10071-011-0424-3)

Hattori Y, Tomonaga M, Fujita K (2011) Chimpanzees (Pan troglodytes) show more understanding of human attentional states when they request food in the experimenter’s hand than on the table. Interaction Studies 12:418-429.

Hirata S, Matsuda G, Ueno A, Fuwa K, Sugama S, Kusunoki K, Fukushima H, Hiraki K, Tomonaga M, Hasegawa T (2011) Event-related potentials in response to subjects’ own names: A comparison between humans and a chimpanzee. Communicative &Integrative Biology 4(3):1-3.

Inoue S, Matsuzawa T (2011) Correlation between menstrual cycle and cognitive performance in a chimpanzee (Pan troglodytes). Journal of Comparative Psychology 125:104-110.(DOI: 10.1037/a0020870)

Kaneko T, Tomonaga M (2011) The perception of self-agency in chimpanzees. Proceedings of the Royal Society Series B : Biological Sciences. (DOI:10.1098/rspb.2011.0611)

Morimura N, Idani G, Matsuzawa T (2011) The first chimpanzee sanctuary in Japan: an attempt to care for the “surplus” of biomedical research. American Journal of Primatology 73:226-232. (DOI:10.1002/ajp.20887)

Ogura T (2011) Contrafreeloading and the value of control over visual stimuli in Japanese macaques (Macaca fuscata). Animal Cognition 14(3):427-431: (DOI:10.1007/s10071-010-0377-y)

Sakai T, Mikami A, Tomonaga M, Matsui M, Suzuki J, Hamada Y, Tanaka M, Miyabe-Nishiwaki T, Makishima H, Nakatsukasa M, Matsuzawa T (2011) Differential Prefrontal White Matter Development in Chimpanzees and Humans. Current Biology, Volume 21, Issue 16, 1397-1402 (DOI:10.1016/j.cub.2011.07.019)

Chin H, Tomonaga M, Nakajima S, Uwano Y, Yoshii M (2011) "Knowing self, knowing others" International Workshop for Young Researchers (2011/01/29-30, Kyoto University) Program, p.31.

Anderson JR, Hattori Y, Kuroshima H, Fujita K (2010) Flexibility in the use of requesting gestures in squirrel monkeys (Saimiri sciureus). American Journal of Primatology 72(8):707-14. (DOI:10.1002/ajp.20827)

Biro D, Humle T, Koops K, Sousa C, Hayashi M, Matsuzawa T (2010) Chimpanzee mothers at Bossou, Guinea carry the mummified remains of their dead infants. Current Biology 20(8):351-352. (DOI:10.1016/j.cub.2010.02.031)

Carvalho S, Yamanashi Y, Yamakoshi G, Matsuzawa T (2010) Bird in the hand: Bossou chimpanzees (Pan troglodytes) capture West African wood-owls (Ciccaba woodfordi) but not to eat. Pan Africa News 17:6-9.

Fukushima F, Hirata S, Ueno A, Matsuda G, Fuwa K, Sugama K, Kusunoki K, Hirai M, Hiraki K, Tomonaga M, Hasegawa T (2010) Neural correlates of face and object perception inan awake chimpanzee (Pan troglodytes) examined by scalp-surface event-related potentials. PLoS ONE 5(10):e13366. (DOI:10.1371/journal.pone.0013366)

Hattori Y, Kano F, Tomonaga M (2010) Differential sensitivity to conspecific and allospecific social cues in chimpanzees (Pan troglodytes) and humans (Homo sapiens): A comparative eye-tracking study. Biology Letters 6:610-613. (DOI:10.1098/rsbl.2010.0120)

Hattori Y, Kuroshima H, Fujita K (2010) Tufted capuchin monkeys (Cebus apella) show understanding of human attentional states when requesting food held by a human. Animal Cognition 13:87-92. (DOI:10.1007/s10071-009-0248-6)

Kano F, &Tomonaga M (2010) Atention to emotional scenes including whole-body expressions in chimpanzees (Pan troglodytes). Journal of Comparative Psychology 124:287-294. (DOI:10.1037/a0019146)

Kano F, Tomonaga M (2010) Attention to emotional scenes including whole-body expressions in chimpanzees (Pan troglodytes). Journal of Comparative Psychology 124:87-294. (DOI:10.1037/a0019146)

Kano F, Tomonaga M (2010) Face scanning in chimpanzees and humans: Continuity and discontinuity. Animal Behaviour 79:227-235. (DOI:10.1016/j.anbehav.2009.11.003)

Koops K, McGrew W, Matsuzawa T (2010) Do chimpanzees (Pan troglodytes) use cleavers and anvils to fracture Treculia africana fruits? - Preliminary data on a new form of percussive technology. Primates 51:175-178. (DOI:10.1007/s10329-009-0178-6)

Miyabe-Nishiwaki T, Kaneko A, Nishiwaki K, Watanabe A, Watanabe S, Maeda N, Kumazaki K, Morimoto M, Hirokawa R, Suzuki1 J, Ito Y, Hayashi M, Tanaka M, Tomonaga M, Matsuzawa T (2010) Tetraparesis resembling acute transverse myelitis in acaptive chimpanzee (Pan troglodytes): long-term care andrecovery. Journal of Medical Primatology 39:336-346. (DOI:10.1111/j.1600-0684.2010.00415.x.)

Paxton R, Basile BM, Adachi I, Suzuki WA, Wilson ME, Hampton RR (2010) Rhesus monkeys (Macaca mulatta) rapidly learn to select dominant individuals in videos of artificial social interactions between unfamiliar conspecifics. Journal of Comparative Psychology 124(4):395-401. (DOI:10.1037/a0019751)

Sugawara T, Go Y, Udono T, Morimura N, Tomonaga M, Hirai H and Imai H (2010) Diversification of bitter taste receptor gene family in western chimpanzees.Molecular Biology and Evolution Volume28, Issue2 pp.921-931 (DOI:10.1093/molbev/msq279)

Shirai N, Imura T, Hattori Y, Adachi I, Ichihara S, Kanazawa S, Yamaguchi MK, Tomonaga M (2010) Asymmetric perception of radial expansion/contraction in Japanese macaque (Macaca fuscata) infants. Experimental Brain Research 202:319-325, (DOI:10.1007/s00221-009-2136-3)

Tanaka M, Uchikoshi M (2010) Visual preference in a human-reared agile gibbon (Hylobates agilis). Primates 51:63-67. (DOI:10.1007/s10329-009-0175-9)

Tomonaga M, Imura T (2010) Pacman in the sky with shadows: The effect of cast shadows on the perceptual completion of occluded figures by chimpanzees and humans. Behavioral and Brain Functions 6(38) (DOI:10.1186/1744-9081-6-38.)

Tomonaga M, Imura T (2010) Visual search for human gaze direction by a chimpanzee (Pan troglodytes). PLoS ONE 5(2):e9131. (DOI:10.1371/journal.pone.0009131)

Tomonaga M, Uwano Y, Ogura S, Saito T (2010) Bottlenose dolphins' (Tursiopstruncatus) theory of mind as demonstrated by responses to their trainers’ attentional states. International Journal of Comparative Psychology 23:386-400.

Ueno A, Hirata S, Fuwa K, Sugama K, Kusunoki K, Matsuda G, Fukushima H, Hiraki H, Tomonaga M, Hasegawa T (2010) Brain activity in an awake chimpanzee in response to the sound of her own name. Biology Letters. (DOI:10.1098/rsbl.2009.0864)

Ushitani T, Imura T, Tomonaga M (2010) Object-based attention in chimpanzees (Pan troglodytes). Vision Research 50:577-584. (DOI:10.1016/j.visres.2010.01.003)

Yamanashi Y, Matsuzawa T (2010) Emotional Consequence when chimpanzees face with challenge: Individual Difference of Self-Directed Behaviours during Cognitive Experiments. Animal Welfare 19:25-30.

Chin H, Tomonaga M, Nakajima S, Uwano Y, Yoshii M (2010) “Biodiversity, Zoos and Aquariums “Message from Animals”” The 15th Kyoto University International Symposium (2010/09/19-20, Nagoya KowanKaikan) Program & Abstracts, p.61.

Hattori Y, Tomonaga M (2010) An experimental study of behavioral synchrony in chimpanzees using matching to sample task. XXIII Congress of the International Primatological Society (2010/09/12-18, Kyoto) Primate Research, 26, Supplement, p. 428.

Hayashi M (2010) Cognitive development in captive and wild chimpanzees. 第152回日本動物心理学会例会 (2010/04/03, Nagoya).

Hayashi M (2010) Cognitive development in chimpanzees assessed by object manipulation. HOPE-GM Lectures on Primate Mind and Society (2010/03/22, Kyoto).

Hayashi M, Takeshita H (2010) Stacking blocks in chimpanzees and humans. The 23rd Congress of the International Primatological Society (2010/09/13, Kyoto).

Hayashi M, Takeshita H (2010-03) Cognitive development in chimpanzees and humans assessed in object manipulation tasks. XVIIth Biennial International Conference on Infant Studies (2010-03/11, Baltimore, USA).

Ichino E, Sakuraba Y, Kimura M, Shimada K, Suzuki K, Nakayama T, Kondoh Y, Takakura K, Ymamamoto K, Hara M, Adachi I (2010) Exhibition of chimpanzee cognition in Higashiyama-zoo. The 15th Kyoto University International Symposium (2010/09, Nagoya).

Imura T, Adachi I, Hattori Y, Tomonaga M (2010) Perception of the motion trajectory of objects from moving cast shadows in infant Japanese macaques (Macaca fuscata). XXIII Congress of the International Primatological Society (2010/09/12-18, Kyoto) Primate Research, 26, Supplement, p. 428.

Inoue S, Matsuzawa T (2010) Eye movements of young and adult chimpanzees during a memory task. 23rd Congress of the International Primatological Society (2010/08, Kyoto).

Kaneko T, Tomonaga M (2010) A comparative study in the perception of self-agency between human and chimpanzee. 14th Annual Conference of the Association for the Scientific study of Consciousness (ASSC14) (2010/06/24-27, Toronto, Canada).

Kaneko T, Tomonaga M (2010) A comparative study in the perception of self-agency between human and chimpanzee. International Symposium “HOPE-GM Lectures on Primate Mind and Society” (2010/03/22-23, Kyoto, Japan) Abstract, Abstract Booklet, pp.11-12.

Kaneko T, Tomonaga M (2010) Relative contribution of kinematical information and goal representation for the perception of self-agency in chimpanzees and humans. XXIII Congress of the International Promatological Society (2010/09/12-18, Kyoto) Primate Research, 26, Supplement, p. 9.

Kano F, Tomonaga M (2010) A comparative eye-tarcking study in chimpanzees and humans. XXIII Congress of the International Promatological Society (2010/09/12-18, Kyoto) Primate Research, 26, Supplement, p. 104.

Kano F, Tomonaga M (2010) A comparative eye-tracking study in chimpanzees and humans. International Symposium “HOPE-GM Lectures on Primate Mind and Society” (2010/03/22-23, Kyoto, Japan) Abstract, Abstract Booklet, pp.9-10.

Konno A, Morimura N, Tanaka M, Ushida K, Kusuda S, Udono T, Okahashi K, Yamamoto Y, Matsunaga M, Ito F, Inoue-Murayama M, Hasegawa T, Tomonaga M (2010) Inter-institutional transfer of captive chimpanzees: A case study of relationships among, behavior, personality, and “quality of life”. XXIII Congress of the International Promatological Society (2010/09/12-18, Kyoto) Primate Research, 26, Supplement, p. 83.

Konno A, Nihei Y, Saito T, Uwano Y, Kanda K, Katoh K, Shimura H, Imazu K, Maruyama N, Hasegawa T, Tomonaga M (2010) “Biodiversity, Zoos and Aquariums “Message from Animals”” COP10 Partnership Project The 15th Kyoto University International Symposium (2010/09/19-20, Nagoya KowanKaikan) Program & Abstracts, p.65.

Makishima H, Sakai T, Mikami A, Hirai D, Nishimura T, Suzuki J, Hamada Y, Tomonaga M, Tanaka M, Miyabe T, Nakatsukasa M, Matsuzawa T (2010) Longitudinal development of volu,etric cerebral asymmetries of chimpanzees. XXIII Congress of the International Promatological Society (2010/09/12-18, Kyoto) Primate Research, 26, Supplement, p. 459.

Martin C (2010) Chimpanzees' use of social cues in shared matching to sample tasks. HOPE-GM Lectures on Primate Mind and Society (2010/09/22-23, Kyoto, Japan).

Matsusaka T (2010) Vocal communication of captive chimpanzees. HOPE-GM INTERNATIONAL SYMPOSIUM "HOPE-GM LECTURES ON PRIMATE MIND and SOCIETY" (2010/03/22, Kyoto University).

Matsuzawa T (2010) Support for African/Asian Great Apes (SAGA): Efforts towards the care and conservation of chimpanzees. International Primate Society 23rd Congress (2010/09/13, Kyoto University, Kyoto) Primate Research, 26: 59.

Mizuno K, Chaya K, Imanishi T, Adachi I (2010) Video archives of captive Asian and African elephants. The 15th Kyoto University International Symposium (2010/09, Nagoya).

Murai C, Tomonaga M (2010) Do monkeys read others’ gaze statement in non-competitive situation? XXIII Congress of the International Promatological Society (2010/09/12-18, Kyoto) Primate Research, 26, Supplement, p. 436.

Ogura T (2010) Contrafreeloading with movie stimuli in Japanese macaques. International Primatological Society 23rd Congress (2010/09, 京都).

Ogura T (2010) Management of behavioral abnormality in singly-housed Japanese macaques by movie presentation. The 44th International Society of Applied Ethology Conference (2010/08, Uppsala, Sweden).

Sakai T (2010) Brain development in chimpanzees: A combined 3D Ultrasound and MRI study. International Primatological Society 2010 Congress (2010/09/13, Kyoto).

Sakuraba Y, Kimura M, Ichino E, Shimada K, Suzuki K, Hirosawa M, Nakayama T, Kondoh Y, Takakura K, Ymamamoto K, Hara M, Adachi I (2010) The effect of introduction of a new 3D structure on the chimpanzees (Pan troglodytes) in Higashiyama zoo. The 15th Kyoto University International Symposium (2010/09, Nagoya).

Sato Y (2010) Laterality of manual actions in substrate use by captive tufted capuchin monkeys (Cebus apella). International Primate Society 23rd Congress (2010/09/14, Kyoto University, Kyoto) Primate Research, 26: 163.

Sato Y, Fujimori Y, Hayashi M (2010) Laterality of manual actions in nut cracking by captive tufted capuchin monkeys (Cebus apella). International Symposium, HOPE-GM Lectures on Primate Mind and Society (2010/03/22, Kyoto Univerisity).

Sugawara T, Go Y, Udono T, Morimura N, Tomonaga M, Hirai H, Imai H (2010) Diversification of bitter taste receptor gene family in chimpanzees. XXIII Congress of the International Promatological Society (2010/09/12-18, Kyoto) Primate Research, 26, Supplement, p. 44.

Tomonaga M (2010) Going ahead: Perceptual bias for forward-facing motion in chimpanzees. International Symposium “HOPE-GM Lectures on Primate Mind and Society” (2010/03/22-23, Kyoto, Japan) Abstract Booklet, pp.12-13.

Tomonaga M, Imura T (2010) Perception of triadic gfaze in chimpanzees (Pan troglodytes) tested by the visual search task. XXIII Congress of the International Promatological Society (2010/09/12-18, Kyoto) Primate Research, 26, Supplement, p. 347.

Tomonaga M, Uwano U, Ogura S, Sugiyama A, Sato M, Kawakami J, Kamiya T (2010) “Biodiversity, Zoos and Aquariums “Message from Animals”” The 15th Kyoto University International Symposium (2010/09/19-20, Nagoya KowanKaikan) Program & Abstracts, p.66.

Uchikoshi M (2010) The growth and development of two agile gibbons from infancy to adulthood. International Primate Society 23rd Congress (2010/09/16, Kyoto University, Kyoto) Primate Research, 26: 319.

Ushitani T, Imura T, Tomonaga M (2010) Attentional benefit for perceptually-structured objects in chimpanzee vision. XXIII Congress of the International Promatological Society (2010/09/12-18, Kyoto) Primate Research, 26, Supplement, p.345.

Uwano Y, Saito T, Sato M, Tomonaga M (2010) “Biodiversity, Zoos and Aquariums “Message from Animals”” The 15th Kyoto University International Symposium (2010/09/19-20, Nagoya KowanKaikan) Program & Abstracts, p.67.

Watanabe S, Tomonaga M, Fujita K (2010) Motion judgment in infant Japanese macaques (Macacafuscata). XXIII Congress of the International Promatological Society (2010/09/12-18, Kyoto) Primate Research, 26, Supplement, p. 430.

Yamanashi Y, Hayashi M, Matsuzawa T (2010) Assessing the effects of cognitive experiments on captive chimpanzees’ welfare by direct comparison of activity budgets between wild and captivity. 23rd International Primatological Society Conference (2010/09/13-18, Kyoto).

Yamanashi Y, Hayashi M, Matsuzawa T (2010) Assessing the effects of cognitive experiments on the welfare of captive chimpanzees by direct comparison of the activity budget between wild and captivity. HOPE-GM INTERNATIONAL SYMPOSIUM "HOPE-GM LECTURES ON PRIMATE MIND and SOCIETY" (2010/03/22-23, Kyoto, Japan).

Yamanashi Y, Hayashi M, Matsuzawa T (2010) The effects of cognitive experiments on the welfare of captive chimpanzees. COP10 Symposium (2010/09/19-20, Nagoya).

Yamanashi Y, Hayashi M, Matsuzawa T (2010) The effects of cognitive experiments on the welfare of captive chimpanzees. International Society for Applied Ethology Conference (2010/08/03-07, Uppsala Sweden).

Matsuzawa T (2010/03) Chimpanzee mind: the evolutionary basis of human mind. I-Brain symposium in Ghent University Ghent, Germany.

Matsuzawa T (2010/03) Chimpanzee mind: the evolutionary basis of human mind. I-Brain symposium in Ghent University Ghent, Germany.

Matsuzawa T (2010/04/28) Chimpanzee mind and human mind. Seoul Zoo.

Matsuzawa T (2010/04/29) What is uniquely human?: A view from the study of chimpanzees. Ewha Women's University.

Matsuzawa T (2010/05/18) Chimpanzee mind and human mind: a combining effort of fieldwork and laboratory work. University College London UK.

Matsuzawa T (2010/05/21) Cognitive development in chimpanzees. 15th Biennial Scientific Meeting of the International Society for Comparative Psychology Awaji.

Matsuzawa T (2010/07/15) Social cognition in primates. Cold Spring Harbor Laboratory USA.

Matsuzawa T (2010/07/21) Comparative cognitive development. ISSBD 21st biennial international congress Lusaka, Zambia.

Tomonaga M (2010/03/08) Chimpanzee mind: the evolutionary basis of human mind. Global COE International Symposium “Evolution, Development and Education of Logic and Sensibility”,”Evolution, Logic and Sensibility of Education” Tokyo．

Tomonaga M (2010/03/08) Social-cognitive bases for (non-) active teaching in chimpanzees. Global COE International Symposium“Evolution, Development and Education of Logic and Sensibility”,”Evolution, Logic and Sensibility of Education” Tokyo．

Tomonaga M (2010/05/19-21) Perception of social stimuli in chimpanzees: From body, face, to gaze. Symposium “Social cognition in nonhumans” 15th Biennial Scientific Meeting of the International Society for Comparative Psychology Awaji, Hyogo Abstract: Program and Abstracts, p.43．

Tomonaga M (2010/09/11-12) Perception of social stimuli in chimpanzees. The 4th International Symposium of the Biodiversity & Evolution Global COE Project, “Evolution of Sensor, Communication, and Society” Kyoto Abstract, Program & Abstract, p.16．

Tomonaga M (2010/05/19-21) Perception of social stimuli in chimpanzees: From body, face, to gaze. International Society for Comparative Psychology Awaji, Hyogo, Japan “Social cognition in nonhumans”．

Tomonaga M (2010/09/11-12) Biodiversity & Evolution Global COE Project Evolution of Sensor, Communication, and Society Kyoto Perception of social stimuli in chimpanzees.

Matsuzawa, T. (2010). A trade-off theory of intelligence. In: Mareschal, D. et al. (eds.), The making of human concepts. Pp. 227–245, Oxford University Press.

Tomonaga, M., & Imura, T. (2009). Faces capture the visuospatial attention of chimpanzees (Pan troglodytes): Evidence from a cueing experiment. Frontiers in Zoology, 6, 14. (DOI:10.1186/1742-9994-6-14)

Martinez, L., & Matsuzawa, T. (2009). Visual and auditory conditional position discrimination in chimpanzees (Pan troglodytes). Behavioural Processes, 82, 90-94. (DOI:10.1016/j.beproc.2009.03.010)

Adachi, I., Chou, D. P., & Hampton, R. R. (2009). Thatcher effect in monkeys demonstrates conservation of face perception across primates. Current Biology, online. (DOI:10.1016/j.cub.2009.05.067)

Hockings, K. J., Anderson, J. R., & Matsuzawa, T. (2009). Use of wild and cultivated foods by chimpanzees at Bossou, Republic of Guinea: Feeding dynamics in a human-influenced Environment. American Journal of Primatology, online. (DOI:10.1002/ajp.20698)

Crast, J., Fragaszy, D., Hayashi, M., & Matsuzawa, T. (2009). Dynamic in-hand movements in adult and young juvenile chimpanzees (Pan troglodytes). American Journal of Physical Anthropology, 138, 274-285 (DOI:10.1002/ajpa.20925)

Weiss, A., Inoue-Murayama, M., Hong, K.-W., Inoue, E., Udono, T., Ochiai, T., Matsuzawa, T., Hirata, S., & King, J. E. (2009). Assessing chimpanzee personality and subjective well-being in Japan. American Journal of Primatology, 71, 283-292. (DOI:10.1002/ajp.20649)

Kano, F., & Tomonaga, M. (2009). How chimpanzees look at pictures: A comparative eye-tracking study. Proceedings of the Royal Society B, online. (DOI:10.1098/rspb.2008.1811)

Carvalho, S., Biro, D., McGrew, W. C. & Matsuzawa, T. (2009). Tool-composite reuse in wild chimpanzees (Pan troglodytes): Archaeologically invisible steps in the technological evolution of early hominins? Animal Cognition, 12, S103–S114. (DOI:10.1007/s10071-009-0271-7)

Humle, T. & Matsuzawa, T. (2009). Laterality in hand use across four tool-use behaviors among the wild chimpanzees of Bossou, Guinea, West Africa. American Journal of Primatology, 70, 40–48. (DOI:10.1002/ajp.20616)

Humle, T., Snowdon, C. T. & Matsuzawa, T. (2009). Social influences on ant-dipping acquisition in the wild chimpanzees (Pan troglodytes verus) of Bossou, Guinea, West Africa. Animal Cognition, 12, S37–S48. (DOI:10.1007/s10071-009-0272-6)

Inoue, S. & Matsuzawa, T. (2009). Acquisition and memory of sequence order in young and adult chimpanzees (Pan troglodytes). Animal Cognition, 12, S59–S69. (DOI:10.1007/s10071-009-0274-4)

Martinez, L. & Matsuzawa, T. (2009b). Auditory–visual intermodal matching based on individual recognition in a chimpanzee (Pan troglodytes). Animal Cognition, 12, S71–S85. (DOI:10.1007/s10071-009-0269-1)

Haslam, M., Hernandez-Aguilar, A., Ling, V., Carvalho, S., de la Torre, I., DeStefano, A., Du, A., Hardy, B., Harris, J., Marchant, L., Matsuzawa, T., McGrew, W., Mercader, J., Mora, R., Petraglia, M., Roche, H., Visalberghi, E., & Warren, R. (2009). Primate archaeology. Nature, 460, 339-344. (DOI:10.1038/nature08188)

Matsuzawa, T. (2009). Symbolic representation of number in chimpanzees. Current Opinion in Neurobiology. (DOI:10.1016/j.conb.2009.04.007)

Matsuzawa, T. (2009). Q & A: Tetsuro Matsuzawa. Current Biology, 19, R310-R312. (DOI:10.1016/j.cub.2009.02.001)

This just shows our recent articles. The complete list is under construction now.

1) Anderson JR, Hattori Y, Fujita K (2008) Quality before quantity: rapid learning of reverse-reward contingency by capuchin monkeys (Cebus apella). Journal of Comparative Psychology 122:445-448.

2) Carvalho S, Cunha E, Sousa C, Matsuzawa T (2008) Chaines operatoires and resource-exploitation strategies in chimpanzee (Pan troglodytes) nut cracking. Journal of Human Evolution 55:148-163.

3) Imura T, Shirai N, Tomonaga M, Yamaguchi MK, Yagi A (2008) Asymmetry on the perception of motion in depth by moving cast shadows. Journal of Vision 8(13):1-8.

4) Imura T, Tomonaga M, Yagi A (2008) The effects of linear perspective on relative size discrimination in chimpanzees (Pan troglodytes) and humans (Homo sapiens). Behavioural Processes 77:306-312.

5) Imura T, Tomonaga M, Yamaguchi MK, Yagi A (2008) Asymmetry in the detection of shapes from shading in infants. Japanese Psychological Research 50:128-136.

6) Imura T, Yamaguchi MK, Kanazawa S, Shirai N, Otsuka Y, Tomonaga M, Yagi A (2008) Infants' sensitivity to shading and line junctions. Vision Research 48:1420-1426.

7) Kaneko T, Tomonaga M (2008) Utility of habituation-dishabituation procedure for comparative cognitive studies of Callithrix jacchus and Aotus spp.: Preliminary assessments. Perceptual and Motor Skills 106(3):830-832.

8) Kano F, Tanaka M, Tomonaga M (2008) Enhanced recognition of emotional stimuli in the chimpanzee (Pan troglodytes). Animal Cognition 11(3):517-524.

9) Kawakami K, Takai-Kawakami K, Kawakami F, Tomonaga M, Suzuki M, Shimizu Y (2008) Roots of smile: A preterm neonates' study. Infant Behavior & Development 31:518-522.

10) Matsuno T, Tomonaga M (2008) Temporal characteristics of visibility in chimpanzees (Pan troglodytes) and humans (Homo sapiens) assessed using a visual masking paradigm. Perception 37:1258-1268.

11) Matsuzawa T, McGrew WC (2008) Kinji Imanishi and 60 years of Japanese primatology. Current Biology 18(14):587-591.

12) Mobius Y, Boesch C, Koops K, Matsuzawa T, Humle T (2008) Cultural differences in army ant predation by West African chimpanzees? A comparative study of microecological variables. Animal Behaviour 76:37-45.

13) Okamoto-Barth S, Tomonaga M, Tanaka M, Matsuzawa T (2008) Development of using experimenter-given cues in infant chimpanzees: Longitudinal changes in behavior and cognitive development. Developmental Science 11(1):98-108.

14) Tomonaga M (2008) Relative numerosity discrimination by chimpanzees (Pan troglodytes): Evidence for approximate numerical representations. Animal Cognition 11:43-57.

15) Ueno A, Hirata S, Fuwa K, Sugama-Seki K, Kusunoki K, Matsuda G, Fukushima H, Hiraki K, Tomonaga M, Hasegawa T (2008) ERPs to stimulus deviance in an awake chimpanzee (Pan roglodytes): Towards hominid cognitive neurosciences. PloS ONE 3(1):e1442. doi:10.1371/journal.pone.0001442.

16) Yamamoto S, Yamakoshi G, Humle T, Matsuzawa T (2008) Invention and modification of a new tool use behavior: ant-fishing in trees by a wild chimpanzee (Pan troglodytes verus) at Bossou, Guinea. American Journal of Primatology 70(7):699-702.

17) Adachi I, Kuwahata H, Fujita K, Tomonaga M, Matsuzawa T (2009) Plasticity of ability to form cross-modal representations in infant Japanese macaques. Developmental Science 12(3):446-452.

18) Crast J, Fragaszy D, Hayashi M, Matsuzawa T (2009) Dynamic in-hand movements in adult and young juvenile chimpanzees (Pan troglodytes). American Journal of Physical Anthropology 138:274-285.

19) Humle T, Matsuzawa T (2009) Laterality in hand use across four tool use behaviors among the wild chimpanzees of Bossou, Guinea, West Africa. American Journal of Primatology 71:40-48.

20) Kano F, Tomonaga M (2009) How chimpanzees look at pictures: a comparative eye-tracking study. Proceedings of the Royal Society B: Biological Sciences -:DOI:10.1098/rspb.2008.1811.

21) Murai C, Tomonaga M (2009) Fear responses of Japanese monkeys to scale models. Journal of Ethology 27:1-10.

22) Poti P, Hayashi M, Matsuzawa T (2009) Spatial construction skills of chimpanzees (Pan troglodytes) and young human children (Homo sapiens sapiens). Developmental Science -:DOI: 10.1111/j.1467-7687.2008.00797.x.

23) Weiss A, Inoue-Murayama M, Hong KW, Inoue E, Udono T, Ochiai T, Matsuzawa T, Hirata S, King JE (2009) Assessing chimpanzee personality and subjective well-being in Japan. American Journal of Primatology 71:283-292.

1) Ohashi G, Hasegawa R, Kourouma M, Matsuzawa T (2008) Arbors and cuttings: New trials for Green Corridor Project at Bossou-Nimba. Pan Africa News 15(2):20-23.

1) Adachi I (2008) Cross-modal representations of familiar conspecifics in rhesus macaques. The International Symposium on Comparative Cognitive Science 2008 Primate origins of human mind (2008/05, Kyoto).

2) Hattori Y, Kuroshima H, Fujita K (2008) Cognitive background of reciprocal altruism in tufted capuchin monkeys. International Symposium Foundations of Human Social Behavior (2008/06, Zurich, Switzerland).

3) Hattori Y, Kuroshima H, Fujita K (2008) Cognitive background of reciprocal altruism in tufted capuchin monkeys. The 22nd Congress of International Primatological Society (IPS) (2008/08, Edinburgh, UK).

4) Imura T, Tomonaga M (2008) Visual search on the ground-like surface defined by pictorial depth cues in chimpanzees (Pan troglodytes) and humans (Homo sapiens). International Primatological Society XXII Congress (2008/08, Edinburgh, UK).

5) Imura T, Tomonaga M, Yonas A (2008) Perception of depth from linear perspective and binocular information in a chimpanzee. 31th European Conference on Visual Perception (2008/08, Utrecht, Netherlands).

6) Inoue S (2008) Working Memory of Numerals in human children and young chimpanzees. The International Symposium on Comparative Cognitive Science 2008 Primate origins of human mind (2008/05, Kyoto).

7) Inoue S, Matsuzawa T (2008) Working Memory of Numerals in Humans and Chimpanzees. 22nd Congress of the International Primatological Society (2008/08, Edinburgh, UK).

8) Kaneko T, Tomonaga M (2008) Learning to use a trackball devise by chimpanzees. Symposium on comparative cognitive science 2008 "Primate origins of human mind" (2008/05, Kyoto).

9) Kaneko T, Tomonaga M (2008) Utility of the habituation-dishabituation procedure for cognitive studies of New World monkeys: verification of the looking time sensitivity and exploration of the behavioural measures. International Primatological Society XXII Congress (2008/08, Edinburgh, Scotland).

10) Kano F, Tanaka M, Tomonaga M (2008) Enhanced recognition of emotional stimuli in the chimpanzee (Pan troglodytes). International Primatological Society (2008/08, the Edinburgh International Conference Centre).

11) Martin C, Biro D, Matsuzawa T (2008) A Shared Matching-to-sample Task for Pairs of Chimpanzees. 22nd Congress of the International Primate Society (2008/08, Edinburgh).

12) Martin C, Biro D, Matsuzawa T (2008) Copying abilities of Chimpanzees in a Shared Touchpanel Task. The 2008 HOPE/SAGA International Workshop (2008/11, Tokyo).

13) Martin C, Biro D, Matsuzawa T (2008) Interactive Touchpanel Tasks for Pairs of Chimpanzees. 31st Annual Meeting of the American Society of Primatologists (2008/06, Florida).

14) Martin C, Biro D, Matsuzawa T (2008) Interactive Touchpanel Tasks for Pairs of Chimpanzees. The Inernational Symposium of Comparative Cognitive Science (2008/05, Kyoto).

15) Myowa-Yamakoshi M, Tomonaga M, Tanaka M, Matsuzawa T (2008) "The two-month revolution" in social cognition in chimpanzees (Pan troglodytes). XXII Congress of the International Promatological Society, Symposium "Social cognitive development in monkeys, apes and humans" (2008/08, Edinburgh, Scotland).

16) Ochiai-Ohira T (2008) Captive Great Apes in JAPAN. The international symposium on comparative cognitive science (2008/05, Kyoto).

17) Ogura T (2008) Preferred contents of movies as an enrichment method for Japanese macaques. The International Symposium on Comparative Cognitive Science 2008 - Primate origins of human mind - (2008/05, Kyoto).

18) Ogura T, Tanaka M (2008) Preferred contents of movies as an enrichment method for Japanese macaques. 23th Congress of the International Primatological Society (2008/08, Edinburgh, UK).

19) Ohashi G (2008) From Bossou to Liberian Forest: Chimpanzee survey across national border in West Africa. Symposium on Comparative Cognitive Science 2008"Primate Origins of Human Mind" (2008/05, Kyoto).

20) Sakai T, Mikami A, Nishimura T, Toyoda H, Matsuzawa T, Tomonaga M, Tanaka M, Hamada Y, Suzuki J, Miyabe T (2008) Maturation of the amygdala in chimpanzees. The 2nd International Symposium of the Global COE Project (2008/11, Kyoto).

21) Sakai T, Mikami A, Nishimura T, Toyoda H, Miwa T, Matsui M, Tanaka M, Tomonaga M, Matsuzawa T, Suzuki J, Kato A, Matsubayashi K, Goto S, Miyabe T (2008) Development of the prefrontal area in chimpanzees. XXII Congress of the International Promatological Society (2008/08, UK).

22) Tomonaga M (2008) Looking through the chimpanzee mind: Perspectives form comprataive cognitive developmental neuroscience. The 31st Annual Meeting of the Japan Neuroscience Society (Neuroscience 2008), Symposium "Revolution towards next generation's primate brain research （霊長類脳研究の次世代への転回）" (2008/07, Tokyo).

23) Tomonaga M, Mizuno Y, Kano F (2008) Probing into the Emotional World of Chimpanzees (Pan troglodytes). XXII Congress of the International Promatological Society, Symposium "Facial expression in primates: Measurement, meaning and function" (2008/08, Edinburgh, Scotland).

24) Yamamoto S (2008) Altruism, reciprocity, and understanding of others in chimpanzees. International Workshop on Comparative Cognitive Science "Minds in the Forest and Under Water: Comparative Cognitive Science on Chimpanzees and Dolphins" (2008/09, Nagoya).

25) Yamamoto S (2008) Do chimpanzees cooperate with conspecifics altruistically or reciprocally? Perspectives from experimental studies. The International Symposium on Comparative Cognitive Science 2008 - Primate origins of human mind- (2008/05, Kyoto).

26) Yamamoto S (2008) The evolution of altruism, reciprocity, and understanding of others: perspective from comparative cognitive studies on chimpanzees. International Workshop "Reciprocity, Cooperation, and Fairness among Human and Non-Human Animals" (2008/09, Sapporo).

27) Yamamoto S, Humle T, Tanaka M (2008) Tool sharing in chimpanzees: helping behavior with non-food objects. The 20th Annual Meeting of the Human Behavior and Evolution Society. (2008/06, Kyoto).

28) Yamamoto S, Tanaka M (2008) Experimental Studies on Reciprocal Cooperation in Chimpanzees. The 22nd Congress of the International Primatological Society. Symposium "Cooperation, Reciprocity and Responses to Inequity" (2008/08, Edinburgh).

29) Yamanashi Y, Matsuzawa T (2008) Inferring chimpanzees' emotional states by self-directed behaviours : individual difference. Measuring Zoo Animal Welfare (2008/05, Chicago, USA).

30) Kaneko K, Tomonaga M (2009) Perception of self agency in chimpanzees. The 16th International Conference On Comparative Cognition (2009/03, Florida, United States).

31) Yamamoto S, Humle T, Tanaka M (2009) Chimpanzees help conspecifics upon request: understanding the other's desire. ESF-JSPS Frontier Science Conference Series for Young Researchers, Social Cognitive Neuroscience (2009/02-03, Maratea).

1) Matsuzawa T (2008/05) Chimpanzee mind: a combining effort of fieldwork and laboratory work. Decade of the Mind III Des Moines, Iowa, USA.

2) Matsuzawa T (2008/05) Chimpanzee mind: laboratory work and field work. Psychology colloquium, City University of New York New York, USA.

3) Matsuzawa T (2008/06) Chimpanzee being. Lecture at the Center for Cognitive Science, Taipei University Taipei, Taiwan.

4) Matsuzawa T (2008/06) Chimpanzee mind: Studies in the field and in the laboratory. Plenary talk in the 20th annual meeting of the Human Behavior and Evolution Society Kyoto.

5) Matsuzawa T (2008/06) Comparative cognitive science: trade-off theory of memory and symbolization in humans and chimpanzees. Invited plenary talk in ASSC 12th Annual Meeting Taipei, Taiwan.

6) Matsuzawa T (2008/06) Imitation, pretence, deception, and altruism in chimpanzees. Invited oral presentation in the "precursor of morality" symposium in the 20th annual meeting of the Human Behavior and Evolution Society Kyoto.

7) Matsuzawa T (2008/07) Chimpanzee mind: evolution of human mind viewed from panthropology. Invited plenary talk in XXIX International Congress of Psychology Berlin, Germany.

8) Matsuzawa T (2008/08) Trade-off theory of memory and symbolization in humans and chimpanzees. International Primatological Society XXII Edinburgh, UK.

9) Matsuzawa T (2008/08) Understanding the chimpanzee mind thorough both filed and laboratory research. Lecture at the Department of Psychology, Edinburgh University Edinburgh, UK.

10) Matsuzawa T (2008/09) Chimpanzee mind: studies in the field and the laboratory. Lecture at the Center for Cognitive Sciences at the University of Minnesota Minneapolis, USA.

11) Matsuzawa T (2008/09) Primatology. A talk in the expert workshop of the CARTA La Jolla, CA, USA.

12) Matsuzawa T (2008/09) Primatology: A study in the field and in the laboratory. Invited lecture to the public of the CARTA symposium La Jolla, CA, USA.

13) Matsuzawa T (2008/09) Understanding the chimpanzee mind through both field and laboratory research. A talk to the Lincoln Park Zoo workshop Chicago, IL, USA.

14) Matsuzawa T (2008/09) Understanding the chimpanzee mind through both field and laboratory research. Invited talk to the joint colloquium of Departments of Anthropology and Psychology, Minnesota University Minneapolis, Minnesota, USA.

15) Matsuzawa T (2008/10) Chimpanzee mind: Isomorphism of tool use and symbol use. Invited talk at the colloquium of the Institute for Cognitive Neuroscience, University College London London, UK.

16) Matsuzawa T (2008/10) Environmental education through chimpanzee mind. A presentation to the Florence government of Belgium Osaka.

17) Matsuzawa T (2008/10) Field experiment of stone tool use in the wild chimpanzees at Bossou. Invited talk to the symposium "The origin of percussive tool use" held in the Leverhulme Center for Human Evolutionary Studies, University of Cambridge Cambridge, UK.

18) Matsuzawa T (2008/10) Understanding the chimpanzee mind through both field and laboratory research. Invited talk in the Zangwill Club, Department of Psychology, University of Cambridge Cambridge, UK.

19) Matsuzawa T (2008/10) Understanding the chimpanzee mind through both field and laboratory research. Lecture in the Ecole Normale Superieure Paris, France.

20) Tomonaga M (2008/09) Perceptual bases for social cognition in chimpanzees. International Workshop on Comparative Cognitive Science"Minds in the Forest and Under Water: Comparative Cognitive Science on Chimpanzees and Dolphins" Port of Nagoya Public Aquarium.

21) Matsuzawa T (2009/02) Chimpanzee mind: a combining effort of fieldwork and laboratory work. Invited talk in 2009 AAAS Annual Meeting Chicago, IL, USA.

22) Matsuzawa T (2009/02) Cognitive development in chimpanzees in the wild and in the laboratory. ESF-JSPS Frontier Science Conference Series for Young Researches: Social Cognitive Neuroscience Maratea, Italy.

1) Hockings K, Humle T, Anderson J, Biro D, Sousa C, Ohashi, Matsuzawa T. (2007) Chimpanzees share forbidden fruit. PLoS ONE 2(9): e886.

2) Imura T, Tomonaga M, Yagi A. (2008) The effects of linear perspective on relative size discrimination in chimpanzees (Pan troglodytes) and humans (Homo sapiens). Behavioural Processes 77:309-312.

3) Inoue S, Matsuzawa T. (2007) Working memory of numerals in chimpanzees. Current Biology 17(23): R1004-R1005.

4) Kawakami K, Takai-Kawakami K, Tomonaga M, Suzuki J, Kusaka T, Okai T. (2007) Spontaneous smile and spontaneous laugh: An intensive longitudinal case study. Infant Behavior and Development 30: 146-152.

5) Koops K, Humle T, Sterck EH, Matsuzawa T. (2007) Ground-nesting by the chimpanzees of the Nimba Mountains, Guinea: environmentally or socially determined? American Journal of Primatology 69(4): 407-419.

6) Matsuno T, Tomonaga M. (2007) An advantage for concavities in shape perception by chimpanzees (Pan troglodytes). Behavioural Processes 75: 253-258.

7) Matsuzawa T. (2007) Comparative cognitive development. Developmental Science 10(1): 97-103.

8) Nishimura T, Mikami A, Suzuki J, Matsuzawa T. (2007) Development of the laryngeal air sac in chimpanzees.International. Journal of Primatology 28: 483-492.

9) Okamoto-Barth S, Tomonaga M, Tanaka M, Matsuzawa T. (2008) Development of using experimenter-given cues in infant chimpanzees: Longitudinal changes in behavior and cognitive development. Developmental Science 11(1):98-108.

10) Tanaka M. (2007) Development of visual preference of chimpanzees (Pan troglodytes) for photographs of primates: effect of social experience. Primates 48: 303-309.

11) Tanaka M. (2007) Recognition of pictorial representations by chimpanzees (Pan troglodytes). Animal Cognition 10: 169-179.

12) Thompson ME, Jones JH, Pusey AE, Brewer-Marsden S, Goodall J, Marsden D, Matsuzawa T, Nishida T, Reynolds V, Sugiyama Y, Wrangham RW. (2007) Aging and fertility patterns in wild chimpanzees provide insights into the evolution of menopause. Current Biology 17(24): 2150-2156.

13) Tomonaga M, Imura T, Mizuno Y, Tanaka M. (2007) Gravity bias in young and adult chimpanzees (Pan troglodytes): Tests with modified opaque-tubes task. Developmental Science 10: 410-420.

14) Tomonaga M. (2007) Is chimpanzee (Pan troglodytes) spatial attention reflexively triggered by the gaze cue? Journal of Comparative Psychology 121: 156-170.

15) Tomonaga, M. (2008) Relative numerosity discrimination by chimpanzees (Pan troglodytes): Evidence for approximate numerical representations. Animal Cognition 11: 43-57.

16) Uchikoshi M, Matsuzawa T. (2007) Tooth eruption in two agile gibbons (Hylobates agilis). Gibbon Jouranl 3: 66-73.

17) Uenishi G, Fujita S, Ohashi G, Kato A, Yamauchi S, Matsuzawa T, Ushida K. (2007) Molecular analyses of the intestinal microbiota of chimpanzees in the wild and in captivity American Journal of Primatology 69(4): 367-376.

18) Ueno A, Hirata S, Fuwa K, Sugama-Seki K, Kusunoki K, Matsuda G, Fukushima H, Hiraki K, Tomonaga M, Hasegawa T. (2008) ERPs to stimulus deviance in an awake chimpanzee (Pan roglodytes): Towards hominid cognitive neurosciences. PLoS ONE 3(1): e1442. doi:10.1371/ journal. pone. 0001442.

1) Carvalho S, Sousa C, Matsuzawa T. (2007) New nut-cracking sites in Diecke Forest, Guinea: An overview of the surveys. Pan Africa News 14(1): 11-13.

2) Granier N, Huynen M, Matsuzawa T. (2007) Preliminary surveys of chimpanzees in Gouela area and Dere Forest, the Nimba Mountain Biosphere Reserve, Republic of Guinea. Pan Africa News 14(2): 20-22.

3) Matsuzawa T. (2007) Assessment of the planted trees in Green Corridor Project. Pan Africa News 14(2): 27-29.

4) Ohashi G. (2007) Papaya fruit sharing in wild chimpanzees at Bossou, Guinea. Pan Africa News 14(1): 14-16.

1) Goto K, Tomonaga M, Imura T, Watanabe S. (2008) Effects of visual context on odd-item search differ between birds and primates. 15th Annual International Conference on Comparative Cognition (2008/03, Florida, USA.).

2) Imura T, Tomonaga M. (2007) Visual search on the ground-like surface defined by texture gradients in chimpanzees (Pan troglodytes) and humans (Homo sapiens). Vision Sciences Society 2007 Annual Meeting (2007/05, Sarasota, USA).

3) Imura T, Yamaguchi MK, Kanazawa S, Shirai N, Otsuka Y, Tomonaga M, Yagi A. (2007) Perception of shape from shading and line junctions in infants. 30th European Conference on Visual Perception (2007/08, Arezzo, Italy).

4) Kawakami K, Takai-Kawakami T, Kawakami F, Tomonaga M, Suzuki M, Shimizu Y. (2008) Roots of smile: A preterm neonates’study. XVIth International Conference on Infant Studies (ICIS2008) (2008/03, Vancouver, Canada).

5) Kawakami K, Takai-Kawakami T, Kawakami F, Tomonaga M. (2008) Development of smiles and laughter in young infants. XVIth International Conference on Infant Studies (ICIS2008), Regular Symposium “Smiling and laughter in infants in developmental and comparative perspectives” (2008/03, Vancouver, Canada).　　

6) Martin C, Biro D, Matsuzawa T. (2007) A new interactive experimental setup for chimpanzees. 10th SAGA Symposium (2007/11, Tokyo).

7) Martinez L, Matsuzawa T. (2007) Preliminary study on acquisition of an audio-visual matching-to-sample task by naive chimpanzees. 10th SAGA Symposium (2007/11, Tokyo).

8) Matsuno T, Tomonaga M. (2007) Multiple object tracking in chimpanzees (Pan troglodytes). 30th European Conference on Visual Perception (2007/08, Arezzo, Italy).

9) Matsuzawa T. (2007) Cognitive development in chimpanzees. Iberian Primatological Conference (2007/11, Peniche, Portugal).

10) Matsuzawa T. (2007) Cognitive development in chimpanzees. The annual meeting of the American Society of Primatologists (2007/06, Winston-Salem, USA).

11) Ohashi G. (2007) Present status and conservation effort of wild chimpanzees distributing Tri-national area of West Africa: Case report of recent surveys in Liberia. Transborder Environmental and Natural Resource Management (2007/12, Kyoto).

12) Sakai T, Mikami A, Nishimura T, Toyoda H, Miwa T, Matsui M, Tanaka M, Tomonaga M, Matsuzawa T, Suzuki J, Kato A, Matsubayashi K, Goto S, Miyabe T. (2008) Development of brain and temporalis in chimpanzees First step: Development of brain in chimpanzees. The 1st International Symposium of the Global COE Project “from Genome to Ecosystem” (2008/03, Kyoto).

13) Sakai T, Mikami A, Nishimura T, Toyoda H, Miwa T, Matsui M, Tanaka M, Tomonaga M, Matsuzawa T, Suzuki J, Kato A, Matsubayashi K, Goto S, Miyabe T. (2008) Mapping of prefrontal development during infancy and childhood in chimpanzees. The 85th Annual Meeting of the Physiological Society of Japan (2008/03, Kyoto).

14) Shirai N, Imura T, Hattori Y, Tomonaga M, Yamaguchi MK. (2007) Perception of radial motion in Japanese macaque (Macaca fuscata) infants. The Vision Sciences Society 2007 Annual Meeting (2007/05, Sarasota, USA).

15) Tomonaga M, Imura T. (2008) Pictorial depth perception: From the comparative-developmental perspective. Keio University Global COE program “Center for Advanced Research on Logic and Sensibility”, The first general symposium, “Logic of Shadow” (2008/01, Tokyo).

16) Tomonaga M, Imura T. (2008) Searching the object attended or ignored by the others: Efficient search for ignorance by the young chimpanzees (Pan troglodytes). XVIth International Conference on Infant Studies (ICIS2008) (2008/03, Vancouver, Canada).

17) Uchikoshi M. (2008) Development of gibbons. Hoolock Gibbon Conservation in Bangladesh (2008/01, Dhaka, Bangladesh).

18) Yamamoto S, Tanaka M. (2007) Do chimpanzees spontaneously take turns in a reciprocal cooperation task?: Solicitation and punishment targeted at free-rider. The 30th International Ethological Conference (2007/08, Halifax).

1) Adachi, I., Kuwahata, H., Fujita, K., Tomonaga, M., Matsuzawa, T. (2006) Japanese macaques form a cross-modal representation of their own species in their first year of life. Primates 47: 350-354.

2) Hockings, K., Anderson, J., Matsuzawa, T. (2006) Road crossing in chimpanzees: A risky business. Current Biology 16(17): 668-670.

3) Imura, T., Imura, T., Yamaguchi, M.K., Shirai, N., Otsuka, Y., Tomonaga, M., Yagi, A. (2006) Perception of motion trajectory of objects from the moving cast shadow in infants. Vision Research 46: 652-657.

4) Kawakami, K., Takai-Kawakami, K., Tomonaga, M., Suzuki, J., Kusaka, F., Okai, T. (2007) Spontaneous smile and spontaneous laugh: An intensive longitudinal case study. Infant Behavior & Development 30: 151-157.

5) Kawakami, K., Takai-Kawakami, K., Tomonaga, M., Suzuki, J., Kusaka, S., Okai, T. (2006) Origins of smile and laughter: A preliminary study. Early Human Development 82: 61-66.

6) Koops, K., Humle, T., Sterck, E., Matsuzawa, T. (2006) Ground-nesting by the chimpanzees of the Nimba Mountains, Guinea: Environmentally or socially determined? American Journal of Primatology 65: 1-13.

7) Matsuno, T., Tomonaga, M. (2006) Visual search for moving and stationary items in chimpanzees (Pan troglodytes) and humans (Homo sapiens). Behavioural Brain Research 172(2): 219-232.

8) Matsuzawa, T. (2007) Comparative cognitive development . Developmental Science 10(1): 97-103.

9) Nishimura, T., Mikami, A., Suzuki, J., Matsuzawa, T. (2006) Descent of the hyoid in chimpanzees: evolution of facial flattening and speech. Journal of Human Evolution 51(3): 244-254.

10) Okamoto-Barth, S., Kawai, N., Tanaka, M., Tomonaga, M. (2007) Looking compensates for the distance between mother and infant chimpanzee. Developmental Science 10: 172-182.

11) Tomonaga, M. (2007) Visual search for orientation of faces by a chimpanzee (Pan troglodytes): Face-specific upright superiority and the role of configural properties of faces. Primates 48: 1-12.

12) Uenishi, G., Fujita, S., Ohashi, G., Kato, A., Yamauchi, S., Matsuzawa, T., Ushida, K. (2007) Molecular analyses of the intestinal microbiota of chimpanzees in the wild and in captivity. American Journal of Primatology 69(4): 367-376.

13) Ushida, K., Fujita, S., Ohashi, G. (2006) Nutritional significance of the selective ingestion of Albizia zygia gum exudate by wild chimpanzees in Bossou, Guinea. American Journal of Primatology 68(2): 143-151.

1) Tomonaga, M., Myowa-Yamakoshi, M., Mizuno, Y., Okamoto, S., Yamaguchi, M.K., Kosugi, D., Bard, K.A., Tanaka, M., Matsuzawa, T. (2006) Chimpanzee social cognition in early life:Comparative?developmental perspective. In E. A. Wasserman & T. R. Zentall (Eds), Comparative cognition: Experimental explorations of animal intelligence. New York: Oxford University Press : 639-650.

2) Tomonaga, M., Myowa-Yamakoshi, M., Okamoto, S., Bard, K.A. (2006) Development of gaze recognition in chimpanzees (Pan troglodytes). In K. Fujita & S. Itakura (Eds.), Diversity of cognition: Evolution, development, domestication, and pathology. Kyoto, Japan: Kyoto University Press : 55-72.

1) Matsuzawa, T. (2006) Bossou 30 years. Pan Africa News 13(2): 16-19.

2) Ohashi, G. (2006) Bossou chimpanzees crossed the national border of Guinea into Liberia. Pan Africa News 13(1): 10-12.

3) Koops, K., Matsuzawa, T. (2006) Hand clapping by a chimpanzee in the Nimba Mountains, Guinea, West Africa. Pan Africa News 13(2): 19-21.

1) Hayashi, M., Takeshita, H. (2006) Cognitive development in chimpanzees and humans assessed by object-manipulation tasks. The 4th International Workshop for Young Psychologists (Sep. 2006, kyoto, Japan).

2) Hayashi, M., Matsuzawa, T. (2006) Physical understanding in captive and wild chimpanzees. 21st Congress of the International Primatological Society (Jun. 2006, Entebbe, Uganda).

3) Imura, T., Shirai, N., Yamaguchi, M.K., Tomonaga, M., Yagi, A. (2006) Asymmetry on the perception of motion in depth by moving cast shadows. 29th European Conference on Visual Perception (Aug. 2006, St. Peteresburg, Russia).

4) Imura, T., Tomonaga, M. (2006) Optical contact affects the chimpanzees’ relative size discrimination. The 4th International Workshop for Young Psychologists on Evolution and Development of Cognition (Sep. 2006, Kyoto, Japan).

5) Imura, T., Tomonaga, M., Yamaguchi, M.K., Yagi, A. (2006) Perception of motion trajectory from moving cast shadow in human infants. Vision Sciences Society 2006 Annual Meeting (May. 2006, Sarasota, FL, USA).

6) Imura, T., Yamaguchi, M.K., Tomonaga, M., Yagi, A. (2006) Perception of motion trajectory from moving cast shadow in humans and Japanese macaques (Macaca fuscata). XVth Biennial International Conference on Infant Studies (Jun. 2006, Kyoto, Japan).

7) Imura, T., Yamaguchi, K.M., Tomonaga, M., Yagi, A. (2006) Perception of motion trajectory from moving cast shadow in humans and Japanese macaques (Macaca fuscata). 15th Biennial International Conference on Infant Studies (Jun. 2006, kyoto, Japan).

8) Inoue, S., Matsuzawa, T. (2006) Correlation between the menstrual cycle and performance in a cognitive task in a female chimpanzee. 21st Congress of the International Primatological Society (Jun. 2006, Entebbe, Uganda).

9) Inoue, S., Matsuzawa, T. (2006) Juvenile chimpanzees memorized numerals better than their mothers. The 4th International Workshop for Young Psychologists on Evolution and Development of Cognition (Sep. 2006, Kyoto, Japan).

10) Kawakami, K., Takai-Kawakami, K., Tomonaga, M., Suzuki, J., Kusada, F., Okai, T. (2006) Origins of smile and laughter: Two intensive longitudinal case studies. XVth Biennial International Conference on Infant Studies (Jun. 2006, Kyoto, Japan).

11) Martinez, L., Matsuzawa, T. (2006)A cross-modal identity recognition task: How chimpanzees (Pan　troglodytes) and humans match voice to the Vocalizer’s picture. 21st Congress of the International Primatological Society (Jun. 2006, Entebbe, Uganda).

12) Martinez, L., Matsuzawa, T. (2006) Vocal identity recognition of familiar persons by chimpanzee and human subjects using an audio-visual matching-to-sample task. . The 4th International Workshop for Young Psychologists on Evolution and Development of Cognition (Sep. 2006, Kyoto, Japan).

13) Matsuno, T., Tomonaga, M. (2006) Measurement of luminance contrast sensitivity of chimpanzees (Pan troglodytes). Vision Sciences Society 2006 Annual Meeting (May. 2006, Sarasota, FL, USA).

14) Matsuno, T., Tomonaga, M. (2006) Measurement of luminance contrast sensitivity of chimpanzees (Pan troglodytes). 2006 Annual Meeting of the Vision Science Society (May. 2006, Floroda, USA).

15) Matsuno, T. (2006) Multiple object tracking in chimpanzees. The 4th International Workshop for Young Psychologists on Evolution and Development of Cognition (Sep. 2006, Kyoto, Japan).

16) Matsuzawa, T. (2006) Social and emotional lives into the future. Ngamba Island 2006 IPS Pre-Congress Workshop (Jun. 2006, Entebbe, Uganda).

17) Matsuzawa, T. (2006) Socio-cognitive development in chimpanzees: the steps toward the theory . XXl Congress of the International Primatological Society (Jun. 2006, Entebbe, Uganda).

18) Matsuzawa, T. (2006) Cognitive development in chimpanzees: Face-to-face communication by mother-infant pairs. XXl Congress of the International Primatological Society (Jun. 2006, Entebbe, Uganda).

19) Ohashi, G. (2006) Les Chimpanzes de Bossou Traversent la Frontiere Liberienne. Bossou 30 ans. Symposium International Recherche et Conservation des Grands Singes Africains: 30eme Anniversaire du Projet Bossou-Nimba (Nov. 2006, Conakry, Guinea) Program : 14.

20) Saito, A., Hayashi, M., Matsuzawa, T. (2006) Drawing behavior in chimpanzees (Pan troglodytes): effect of model presentation. The 4th International Workshop for Young Psychologists (Sep. 2006, Kyoto, Japan).

21) Sato, Y., Hayashi, M., Matsuzawa, T. (2006) A developmental process of chimpanzee facial expression in a competitive foraging situation. The 4th International Workshop for Young Psychologists on Evolution and Development of Cognition (Sep. 2006, Kyoto, Japan).

22) Tada, H., Omori, Y., Hirokawa, K., Ohira, H., Tomonaga, M. (2006) Phylogenetic differences of eyeblinks in primates. 13th World Congress of Psychophysiology (Aug. 2006, Istanbul, Turkey).

23) Tomonaga, M., Imura, T. (2007) Do gaze cues reflexively trigger the young chimpanzees' (Pan troglodytes) spatial attention? 2007 SRCD (Society for Research in Child Development) Biennial Meeting (Mar. 2007, Boston, MA, USA).

24) Tomonaga, M., Tanaka, M., Mizuno, Y. (2006) Gravity bias in young and adult chimpanzees (Pan troglodytes)? Test with opaque tubes task . XVth Biennial International Conference on Infant Studies (Jun. 2006, Kyoto, Japan).

25) Ushitani, T., Tomonaga, M. (2007) Object-based attention and visual organization in chimpanzees (Pan troglodytes). 14th Annual International Conference on Comparative Cognition (Mar. 2007, Melbourne Beach, FL, USA).

26) Yamamoto, S., Tanaka, M. (2006) Investigation of reciprocity in chimpanzees in an altruistic token task. The 21st Congress of the International Primatological Society. (Jun. 2006, Entebbe, Uganda) International Journal of Primatology 27(Supplement 1): pp.1.

27) Yamamoto, S., Tanaka, M. (2006) Factors influencing reciprocity in Chimpanzees. The 4th CEFOM/21 International Symposium “Cultural and Adaptive Bases of Human Sociality” (Sep. 2006, Tokyo, Japan).

1) Matsuzawa, T. (2007) Cognitive development in chimpanzees: A synthesis of field and lab study. Comparative cognition in context group, York University (Mar. 2007, Toronto, Canada).

2) Matsuzawa, T. (2007) The history of the understanding chimpanzees conference series. The mind of the chimpanzee (Mar. 2007, Chicago, USA).

3) Matsuzawa, T. (2006) Green corridor: An attempt at saving chimpanzees in Bossou and Nimba. The symbol of collaboration between Guinea and Japan: Bossou 30 ans (Nov. 2006, Conakry, Guinea).

4) Tomonaga, M. (2007) Neurobiological origin of language. 1st Annual Symposium on Japanese-French Frontiers of Science (JFFoS) 2007 (Jan. 2007, Shonan Village, Kanagawa, Japan).

5) Tomonaga, M. (2007) Chimpanzee social cognition in the laboratory: Gaze and attention. . “The Mind of the Chimpanzee”, An International Multidisciplinary Conference on Chimpanzee Cognition (Understanding Chimpanzees) (Mar. 2007, . Lincoln Park Zoo, Chicago, Illinois, USA).

6) Tomonaga, M. (2007) Chimpanzee face perception: Comparative-cognitive-developmental perspective. SRCD (Society for Research in Child Development) Face Processing Preconference (Mar. 2007, Boston, MA, USA).

7) Tomonaga,M.,Okamoto,S.,Myowa-Yamakoshi,M.,Bard, K.A. (2006) Development of gaze recognition in infant chimpanzees (Pan troglodytes) Comparative-cognitive developmental perspective. XVth Biennial International Conference on Infant Studies, Invited Symposium “Eye gaze processing: Evidence from the human infants, nonhuman primates, and robots”. (Jun. 2006, Kyoto, Japan).

Bard, K., Myowa-Yamokoshi, M., Tomonaga, M., Tanaka, M., Costal, A., Matsuzawa, T. (2005) Group differences in the mutual gaze of chimpanzees (Pan troglodytes). Developmental Psychology 41: 616-624.

Granier, N., Martinez, L. (2004) Premiere reconnaissance des chimpanzes Pan troglodytes verus dans la zone transfrontaliere entre la Guinee et le Mali (Afrique de l’Ouest). Primatologie 6: 423-447.

Hayashi, M., Mizuno, Y., Matsuzawa, T. (2005) How does stone-tool use emerge? Introduction of stones and nuts to naive chimpanzees in captivity. Primates 46(2): 91-102.

Imura, T., Yamaguchi, M.K., Shirai, N., Otsuka, Y., Tomonaga, M., Yagi, A. (2006) Perception of motion trajectory of objects from the moving cast shadow in infants. Vision Research 46: 652-657.

Kawakami, K., Takai-Kawakami, K., Tomonaga, M., Suzuki, J., Kusaka, S., Okai, T. (2006) Origins of smile and laughter: A preliminary study. Early Human Development 82: 61-66.

Matsumoto-Oda, A., Tomonaga, M. (2005) “Controlling the sound”: deceptive behavior found in leaf-clipping display in Mahale chimpanzees. Journal of Ethology 23: 109-112.

Mizuno, Y., Takeshita, H., Matsuzawa, T. (2006) Behavior of infant chimpanzees during the night in the first 4 months of life: smiling and suckling in relation to behavioral state. Infancy 9(2): 215-234.

Murai, C., Kosugi, D., Tomonana, M., Tanaka, M., Matsuzawa, T., Itakura, S. (2005) Can chimpanzee infants (Pan troglodytes) form categorical representations in the same manner as human infants (Homo sapiens)? Developmental Science 8(3): 240-254.

Myowa-Yamakoshi, M., Yamaguchi, M., Tomonaga, M., Tanaka, M., Matsuzawa, T. (2005) Development of face recognition in infant chimpanzees (Pan troglodytes). Cognitive Development 20: 49-63.

Takeshita, H., Fragaszy, D., Mizuno, Y., Matsuzawa, T., Tomonaga, M., Tanaka, M. (2005) Exploring by doing: How young chimpanzees discover surfaces through actions with objects. Infant behavior and development 28: 316-328.

Ushida, K., Fujita, S., Ohashi, G. (2006) Nutritional significance of the selective ingestion of Albizia zygia gum exudate by wild chimpanzees in Bossou, Guinea. American Journal of Primatology 68(2): 143-151.

Biro, D., Sousa, C., Matsuzawa, T. (2006) Ontogeny and Cultural propagation of tool use by wild chimpanzees at Bossou, Guinea: Case studies in nut cracking and leaf folding. “Cognitive Development in Chimpanzees”: 476-508, (eds. Matsuzawa, T., Tomonaga, M., Tanaka, M.) Springer, Tokyo.

Foucart, J., Bril, B., Hirata, S., Morimura, N., Houki, C., Ueno, Y., Matsuzawa, T. (2005) A preliminary analysis of nut-cracking movements in a captive chimpanzee: Adaptation to the properties of tools and nuts. “Stone Knapping: The Necessary Conditions for a Uniquely Hominid Behaviour” : 147-157, (ed. Roux, V., Bril, B.) McDonald Institute Monographs, Mcdonald Inst. of Archeological, Cambridge.

Hayashi, M., Takeshita, H., Matsuzawa, T. (2006) Cognitive development in apes and humans assessed by object manipulation. “Cognitive development in chimpanzees”: 395-410, (eds. Matsuzawa, T., Tomonaga, M., Tanaka, M.) Springer-Verlag Tokyo, Tokyo.

Imura, T., Tomonaga, M., Yagi, A. (2006) Processing of shadowi information in chimpanzee (Pan troglodytes) and human (Homo sapiens) infants. T. Matsuzwa, M. Tomonaga, & M. Tanaka (Eds.), Cognitive development in chimpanzees. Tokyo, Japan: Springer. : 305-316.

Inoue-Murayama, M., Hibino, E., Matsuzawa, T., Hirata, S., Takenaka, O., Hayasaka, I., Ito, S., Murayama, Y. (2006) The application of a human personality test to chimpanzees and survey of polymorphism in genes relating to neurotransmitters and hormones. “Cognitive Development in Chimpanzees”: 113-124, (eds. Matsuzawa, T., Tomonaga, M., Tanaka, M.) Springer, Tokyo.

Martinez, L., Granier, N. (2005) Reconocimiento previo y censo de poblaciones de chimpances Pan troglodytes verus que habitan a ambos lados de la zona transfronteriza Guinea-Mali (Africa del Oeste). “Senderos de la Conservacion y de la Restauracion Ecologica. Evaluacion Critica y Etica. ” : 244-269, (ed. martinez-contreras) Serie Eslabones en el Desarrollo de la Ciencia (Collection), Centro de Estudios Filosoficos, Politicos y Sociales , Mexico city.

Matsuno, T., Kawai, N., Matsuzawa, T. (2006) Color recognition in chimpanzees (Pan troglodytes). “Cognitive Development in Chimpanzees” : 317-329, (ed. Matsuzawa, T., Tomonaga, M., Tanaka, M.) Springer, Tokyo.

Matsuzawa, T. (2006) Evolutionary origins of the human mother-infant relationship. “Cognitive Development in Chimpanzees”: 127-141, (eds. Matsuzawa, T., Tomonaga, M., Tanaka, M.) Springer, Tokyo.

Matsuzawa, T. (2006) Sociocognitive development in chimpanzees: A synthesis of laboratory work and fieldwork. “Cognitive Development in Chimpanzees” : 3-33, (eds. Matsuzawa, T., Tomonaga, M., Tanaka, M.) Springer, Tokyo.

Matsuzawa, T. (2006) Evolutionary origins of the human mother-infant relationship. “Cognitive Development in Chimpanzees” : 127-141, (eds. Matsuzawa, T., Tomonaga, M., Tanaka, M.) Springer, Tokyo.

Ohashi, G. (2006) Behavioral Repertoire of Tool Use in the Wild Chimpanzees at Bossou. “Cognitive Development in Chimpanzees” : 439-451, (eds. Matsuzawa T., Tomonaga M., Tanaka M.) Springer, Tokyo.

Okamoto-Barth, S., Tomonaga, M. (2006) Development of joint attention in infant chimpanzees. . In T. Matsuzwa, M. Tomonaga, & M. Tanaka (Eds.), Cognitive development in chimpanzees. Tokyo, Japan: Springer. : 155-171.

Sousa, C., Matsuzawa, T. (2006) Token use by chimpanzees (Pan troglodytes): Choice, metatool, and cost. “Cognitive Development in Chimpanzees” : 411-438, (eds. Matsuzawa, T., Tomonaga, M., Tanaka, M.) Springer, Tokyo.

Tanaka, M. (2006) Spontaneous categorization of natural objects in chimpanzees. “Cognitive Development in Chimpanzees”: 340-367, (eds. Matsuzawa, T., Tomonaga, M., Tanaka, M.) Springer, Tokyo.

Tomonaga, M. (2006) Development of chimpanzee social cognition in the first 2 years of life. “Cognitive development in chimpanzees”: 182-197, (eds. Matsuzwa, T., Tomonaga, M., Tanaka, M.) Springer, Tokyo.

Tomonaga, M., Myowa-Yamakoshi, M., Mizuno, Y., Okamoto, S., Yamaguchi, M.K., Kosugi, D., Bard, K.A., Tanaka, M., Matsuzawa, T. (2006) Chimpanzee social cognition in early life: Comparative?developmental perspective. “Comparative cognition: Experimental explorations of animal intelligence”: 639-650, (ed. Wasserman, E.A., Zentall, T.R.) Oxford University Press, New York.

Tomonaga, M., Myowa-Yamakoshi, M., Okamoto, S., Bard, K.A. (2006) Development of gaze recognition in chimpanzees (Pan troglodytes). K. Fujita & S. Itakura (Eds.), Diversity of cognition: Evolution, development, domestication, and pathology. Kyoto, Japan: Kyoto University Press. : 55-72.

Matsuzawa, T., Tomonaga, M., Tanaka, M. eds (2006) Cognitive development in chimpanzees. pp.522, Springer, Tokyo

Adachi, I., Tomonaga, M., Matsuzawa, T., Fujita, K. (2005) Social categories in infant macaques. The 3rd International Workshop for Young Psychologists on “Evolution and Development of Cognition” (Oct. 2005, Kyoto, Japan).

Imura, T., Tomonaga, M., Yagi, A. (2005) The effects of cast shadows on visual search in chimpanzees and humans. The 3rd International Workshop for Young Psychologists on “Evolution and Development of Cognition” (Oct.2005, Kyoto,Japan).

Imura, T., Tomonaga, M., Yamaguchi, M.K., Yagi, A. (2005) Perception of motion trajectory from moving cast shadow in human infants. Vision Sciences Society 2005 Annual Meeting (May. 2005, Sarasota, USA).

Imura, T., Tomonaga, M., Yamaguchi, M.K., Yagi, A. (2006) The perception of motion trajectory of objects from moving cast shadows in human (Homo sapiens) and Japanese macaque (Maccaca fuscata) infants. Third International Workshop on Evolutionary Cognitive Science "Social Cognition: Evolution, Development, and Mechanism" (Mar. 2006, Tokyo, Japan).

Martinez, L., Granier, N. (2005) Survey on wild chimpanzees Pan troglodytes verus in a transboundary protected area between Guinea and Mali (West Africa): a first assessment in collaboration with the local populations. Kyoto Conference : Delphinid and Primate Social Ecology: A Comparative Discussion (Jul. 2005, Kyoto, Japan).

Martinez, L., Granier, N., Matsuzawa, T. (2005) Proteger en consenso con las poblaciones locales: dos ejemplos de conservacion del chimpance; comun Pan troglodytes verus en Guinea (Africa del Oeste) . 2ndo Congreso Mexicano de Primatologia (May. 2005, Xalapa, Mexico).

Martinez, L., Matsuzawa, T. (2005) An intermodal identity recognition task: how chimpanzees (Pan troglodytes) and humans match voice to the vocalizer’s. The 3rd International Workshop for Young Psychologists On Evolution and Development of Cognition (Oct. 2005, Kyoto, Japan).

Martinez, L., Matsuzawa, T. (2005) Who is who: how chimpanzees (Pan troglodytes) and humans match voice to the vocalizer’s picture in an identity recognition task. Journees Scientifiques Francophones 2005 (Nov. 2005, Tokyo, Japan).

Martinez, L., Matsuzawa, T. (2005) Who is who: how chimpanzees (Pan troglodytes) and humans match voice to the vocalizer’s picture in an identity recognition task. 8th SAGA Symposium (Nov. 2005, Osaka).

Matsuno, T., Tomonaga, M. (2005) Effects of visual context on the perception of collision events in chimpanzees (Pan troglodytes). 28th European Conference on Visual Perception (Aug. 2005, La Coruna, Spain).

Matsuno, T., Tomonaga, M. (2005) Luminance contrast sensitivity of chimpanzees (Pan troglodytes). The 3rd International Workshop for Young Psychologists on Evolution and Development of Cognition (Oct. 2005, Kyoto, Japan).

Mastuno, T., Tomonaga, M. (2005) Luminance contrast sensitivity of chimpanzees (Pan troglodytes). The 3rd International Workshop for Young Psychologists on “Evolution and Development of Cognition” (Oct. 2005, Kyoto, ).

Matsuno, T., Tomonaga, M. (2006) Stream/bounce perception in chimpanzees (Pan troglodytes). The 13th International Conference On Comparative Cognition (Mar. 2006, Melbourne, U.S.A.).

Matsuzawa, T. (2005) How do animals think? Animal cognition in human context. European Forum Alpbach (Aug. 2005, Alpbach).

Mikami, A., Nishimura, T., Miwa, T., Matsui, M., Tanaka, M., Tomonaga, M., Matsuzawa, T., Suzuki, J., Kato, A., Matsubayashi, K., Goto, S., Hashimoto, C. (2005) Development of the brain in infant chimpanzees. The 28th Annual Meeting of The Japan Neuroscience Society (Jul. 2005, Yokohama) Neuroscience Research 52(Suppl.): S53.

Mikami, A., Nishimura, T., Miwa, T., Matsui, M., Tanaka, M., Tomonaga, M., Matsuzawa, T., Suzuki, J., Kato, A., Matsubayashi, K., Goto, S., Hashimoto, C. (2005) Development of the brain structures in infanct chimpanzees. The 35th Annual Meeting of Society for Neuroscience (Jul. 2005, Washington, DC).

Ohashi, G. (2005) Deactivation of Snares by Wild Chimpanzees. IX International Mammalogical Congress (Aug. 2005, Sapporo, ) Abstructs : 331.

Ohashi, G. (2005) Sprit or Spread? The Characteristics of Fission-Fusion Pattern in Bossou Chimpanzees. . Kyoto Conference: Delphinid and Primates Social Ecology (Jul. 2005, Kyoto, ) Program : 51.

Sato, Y., Kuroshima, H., Fujita, K. (2005) Capuchins' causal cognition in tool use tasks involving three-term relationship, reward - tool - hindrance. The 3rd International Workshop for Young Psychologists on Evolution and Development of Cognition (Oct. 2005, Kyoto, Japan).

Tanaka, M., Yamamoto, S. (2006) Mother-infant interaction of chimpanzees in a competitive situation. Third International Workshop on Evolutionary Cognitive Science: "Social Cognition: Evolution, Development, and Mechanism" (Mar. 2006, Tokyo, Japan).

Tomonaga, M. (2005) Comparative development of social cognition: From the chimpanzee’s eye view. XXIX International Ethological Conference (Aug. 2005, Budapest, Hungary).

Tsutsumi, S., Tomonaga, M., Fujita, K. (2005) Infnat monkeys’ theory of animacy: The role of eyes and fluffiness. XXIX International Ethological Conference (Aug. 2005, Budapest, Hungary).

Uchikoshi, M., Matsuzawa, T. (2005) Development of Captive Agile Gibbons: From Birth to Adolescence. Kyoto Conference: Delphinid and Primate Social Ecology (Jul. 2005, Kyoto, Japan).

Yamamoto, S. (2005) Social Factors Influencing Within-group Vigilance in Japanese Macaques (Macaca fuscata). The 9th International Mammalogical Congress (Aug. 2005, Sapporo, Japan).

Yamamoto, S., Tanaka, M. (2005) Coin insertion by mother-infant pairs of chimpanzees (Pan troglodytes) in a competitive-cooperative situation. The 3rd International Workshop for Young Psychologist (Oct. 2005, Kyoto, Japan).

Matsuzawa, T. (2005) Conservation of wild chimpanzees in West Africa . The 1st meeting of the section on Great Apes of the IUCN/SSC Primate Specialist Group (April.2005, Chicago, U.S.A.).

Matsuzawa, T. (2005) Japanese efforts for the international conservation activities of great apes. The ITTO-GRASP work shop in Yokohama (May. 2005, Yokohama).

Matsuzawa, T. (2005) Animal behavior about number processing . NUMBRA/ESCOP Summer school "Neuroscience of number processing" (July.2005, Erice, Italy).

Matsuzawa, T., Wynne, C. (2005) How do animals think? . European Forum Alpbach (Aug. 2005, Alpbach, Austria).

Matsuzawa, T. (2006) Numerical processing in chimpanzees . The 24th European workshop on Cognitive Neuropsychology (Jan.2006, Bressanone, Italy).

Tomonaga, M. (2005) Early social cognition in chimpanzees. Keio University 21st Century COE Program Symposium: “Convergence and divergence of mind” (Jul. 2005, Tokyo, Japan).

Tomonaga, M. (2006) Chimpanzee attention captured and disengaged by social stimuli. Third International Workshop on Evolutionary Cognitive Science "Social Cognition: Evolution, Development, and Mechanism“ (Mar. 2006, Tokyo, Japan).

Anderson, J., Myowa-Yamakoshi, M., Matsuzawa, T. (2004) Contagious yawning in chimpanzees. Biological Sciences 271: S468-S470.

Celli, M., Hirata, S., Tomonaga, M. (2004) Socioecological influences on tool use behaviour of captive chimpanzees. International Journal of Primatology 25: 1267-1281.

Humle, T., Matsuzawa, T. (2004) Oil palm use by adjacent communities of chimpanzees at Bossou and Nimba Mountains, West Africa. International Journal of Primatology 25(3): 551-581.

Kuwahata, H., Adachi, I., Fujita, K., Tomonaga, M., Matsuzawa, T. (2004) Development of schematic face preference in macaque monkeys. Behavioral Processes 66(1): 17-21.

Morokuma, S., Fukushima, K., Kawai, N., Tomonaga, M., Satoh, S., Nakano, H. (2004) Fetal habituation correlates with functional brain development. Behavioural Brain Research 153: 459-463.

Myowa-Yamakoshi, M., Tomonaga, M., Tanaka, M., Matsuzawa, T. (2004) Imitation in neonatal chimpanzees (Pan troglodytes). Developmental Science 7(4): 437-442.

Myowa-Yamakoshi, M., Yamaguchi, M., Tomonaga, M., Tanaka, M., Matsuzawa, T. (2005) Development of face recognition in infant chimpanzees (Pan troglodytes). Cognitive Development 20: 49-63.

Okamoto, S., Tanaka, M., Tomonaga, M. (2004) Looking Back: The "representational mechanism" of joint attention in an infant chimpanzee (Pan troglodytes). Japanese Psychological Research 46: 236-245.

Ueno, A., Matsuzawa, T. (2004) Food transfer between chimpanzee mothers and their infants. Primates 45: 231-239.

Ueno, A., Ueno, Y., Tomonaga, M. (2004) Facial responses to four basic tastes in newborn rhesus macaques (Macaca mulatta) and chimpanzees (Pan troglodytes). Behavioural Brain Research 154: 261-271.

Ueno, A., Matsuzawa, T. (2005) Response to novel food in infant chimpanzees: Do infants refer to mothers before ingesting food on their own? . Behavioural Processes 68(1): 85-90.

Tomonaga, M., Myowa-Yamakoshi, M., Mizuno, Y., Yamaguchi, M., Kosugi, D., Bard, K., Tanaka, M., Matsuzawa, T. (2004) Development of social cognition in infant chimpanzees (Pan troglodytes): Face recognition, smiling, gaze and the lack of triadic interactions. Japanese Psychological Research 46: 227-235.

Matsuzawa, T. (2005) Primate viewing: Chimpanzee behaviour shows remarkable regional variation. Nature 434: 21-22.

Tanaka, M. (2005) Darie Maestripieri (ed.) Primate Psychology. Harvard Univ. Press, Cambridge. Primates 46(1): 75-76.

Matsuzawa, T., Nakamura, M. (2004) Caregiving: mother-infant relations in chimpanzees. "Encyclopedia of animal behavior" : 196-203, (ed. Bekoff, M.) Greenwood press, .

Imura, T., Tomonaga, M., Yamaguchi, M., Yagi, A. (2004) Perception of depth from shading in chinpanzee (Pan troglodytes) and human (Homo sapiens) infants. The 14th Biennial International Conference on Infant Studies (May. 2004, Chicago, USA).

Imura, T., Tomonaga, M., Yagi, A., Yamaguchi, M. (2004) Perception of shape from shading in chimpanzees and humans. The 2nd International Workshop for Young Psychologists on Evolution and Development of Cognition (Nov. 2004, Kyoto, Japan).

Inoue, S., Matsuzawa, T. (2005) Numerical sequence learning in chimpanzees: a preliminary report. The 3rd HOPE International workshop "Comparative Cognitive Science: Recent topics of avian and primate species"　 (Mar. 2005, Kyoto, Japan).

Inoue, S., Matsuzawa, T. (2004) Sequential learning using Arabic numerals by chimpanzees. The 2nd International Workshop for Young Psychologists on Evolution and Development of Cognition (Nov. 2004, Kyoto, Japan).

Matsuno, T., Tomonaga, M. (2004) Contextual effects on the perception of the collision events in chimpanzees (Pan troglodytes) and humans (Homo sapiens). The 2nd International Workshop for Young Psychologists on Evolution and Development of Cognition (Nov. 2004, Kyoto, Japan).

Matsuzawa, T. (2004) Cognitive development in chimpanzees: participation observation based on triadic relationship. the XX Congress of the International Primatological Society (Aug. 2004, Torino).

Mikami, A., Nishimura, T., Miwa, T., Matsui, M., Tomonga, M., Tanaka, M., Matsuzawa, T., Suzuki, J., Kato, A., Matsuzbayashi, K., Goto, S., Hashimoto, C. (2004) Developmet of the brain structures in chimpanzee infants. The XXth Congress of the International Primatological Society (Aug. 2004, Trino, Italy).

Mizuno, Y., Tomonaga, M., Takeshita, H. (2004) Crying infants and mother-infant interactions in chimpanzees. The XXth Congress of the International Primatological Society (Aug. 2004, Torino, Italy).

Mizuno, Y., Takeshita, H., Tomonaga, M. (2005) "Crying" in infants and mother-infant interactions in chimpanzees. (Jan. 2005, Kyoto, Japan).

Ohashi, G. (2005) Behavioral repertoire of tool use in the wild chimpanzees at Bossou. . The 3rd HOPE International Workshop "Comparative Cognitive Science: Recent topics of avian and primate species" (Mar. 2005, Kyoto, Japan).

Tanaka, M. (2005) Categorical discrimination between food and non-food in chimpanzees. The Third HOPE International Workshop "Comparative Cognitive Science: Recent topics of avian and primate species" (Mar. 2005, Kyoto, Japan).

Tanaka, M., Mizuno, Y., Yamamoto, S. (2004) Visual preference for photos of primates by mother-reared chimpanzee infants. The 2nd International Workshop for Young Psychologists on Evolution and Development of Cognition (Nov. 2004, Kyoto, Japan).

Tomonaga, M. (2004) Chimpanzee social cognition in early life. Kyoto-Michigan Collaboration in Psychology 2nd Symposium (Apr. 2004, Kyoto, Japan).

Tomonaga, M. (2004) Is the chimpanzee's attention reflexively triggered by gaze and the other social cues? . The XXth Congress of the International Primatological Society (Aug. 2004, Torino).

Tomonaga, M., Tanaka, M., Matsuzawa, T. (2004) Use of touch-sensitive screens for the study of the chimpanzee's perception and cognition. The XXth Congress of the International Primatological Society, Symposium "Uses of Technology in the study of cognition in non-human primates" (Aug. 2004, Torino).

Uchikoshi, M., Matsuzawa, T. (2004) Behavioral development of agile gibbons: From birth to late juvenile . The 2nd International Workshop for Young Psychologists on Eevolution and Ddevelopment of Cognition (Nov. 2004, Kyoto, Japan).

Tsutsumi, S., Fujita, K., Tomonaga, M. (2004) Infant macaques' theory of animacy: The role of eyes and fluffiness. The 2nd International Workshop for Young Psychologists on Evolution and Development of Cognition (Nov. 2004, Kyoto, Japan).

Ueno, A., Ueno, Y., Tomonaga, M. (2005) Affective responses to taste stimuli in newborn rhesus macaques (Macaca mulatta) and chimpanzees (Pan troglodytes). (Jan. 2005, Kyoto, Japan).

Yamamoto, S., Mizuno, Y., Tanaka, M. (2004) Social interaction between two chimpanzees for using tokens to get food. The 2nd International Workshop for Young Psychologists on Evolution and Development of Cognition (Nov. 2004, Kyoto, Japan).

Biro, D., Inoue-Nakamura, N., Tonooka, R., Yamakoshi, G., Sousa, C., Matsuzawa, T. (2003) Cultural innovation and transmission of tool use in wild chimpanzees: evidence from field experiments. Animal Cognition 6: 213-223.

Celli, M.C., Tomonaga, M., Udono, T., Teramoto, M., Nagano, K. (2003) Tool use tasks as environmental enrichment for captive chimpanzees. Applied Animal Behaviour Science 81: 171-182.

Hayashi, M., Matsuzawa, T. (2003) Cognitive development in object manipulation by infant chimpanzees. Animal Cognition 6: 225-233.

Imura, T., Tomonaga, M. (2003) Perception of depth from shading in infant chimpanzees (Pan troglodytes). Animal Cognition 6: 253-258.

Iversen, I., Matsuzawa, T. (2003) Development of interception of moving targets by chimpanzees (Pan troglodytes) in an automated task. Animal Cognition 6: 169-183.

Kawai, N., Morokuma, S., Tomomaga, M., Horimoto, N., Tanaka, M. (2004) Associative learning and memory in a chimpanzee fetus: Learning and long-lasting memory before birth. Developmental Psychobiology 44(2): 116-122.

Matsuzawa, T. (2003) The Ai project: historical and ecological contexts. Animal Cognition 6: 199-211.

Murai, C., Tomonaga, M., Kamegai, K., Terazawa, N., Yamaguchi, M., (2003) Do infant Japanese macaques (Macaca fuscata) categorize objects without specific training? Primates 45: 1-6.

Myowa-Yamakoshi, M., Tomonaga, M., Tanaka, M., Matsuzawa, T. (2003) Preference for human direct gaze in infant chimpanzees (Pan troglodytes). . Cognition 89: B53-B64.

Nishimura, T., Mikami, A., Suzuki, J., Matsuzawa, T. (2003) Descent of the larynx in chimpanzee infants. Proceedings of the National Academy of Sciences of the United States of America 100(12): 6930-6933.

Shimizu, K., Douke, C., Fujita, S., Matsuzawa, T., Tomonaga, M., Tanaka, M., Matsubayashi, K., Hayashi, M. (2003) Urinary steroids, FSH and CG measurements for monitoring the ovarian cycle and pregnancy in the chimpanzee. Journal of Medical Primatology 32: 15-22.

Sousa, C., Okamoto, S., Matsuzawa, T. (2003) Behavioural development in a matching-to-sample task and token use by an infant chimpanzee reared by his mother. Animal Cognition 6: 259-267.

Tanaka, M. (2003) Visual preference by chimpanzees (Pan troglodytes) for photos of primates measured by a free choice-order task: implication for influence of social experience. Primates 44(2): 157-165.

Tanaka, M., Tomonaga, M., Matsuzawa, T. (2003) Finger drawing by infant chimpanzees (Pan troglodytes). Animal Cognition 6: 245-251.

Hayashi, M., Matsuzawa, T. (2003) Manipulation of multiple objects by chimpanzees. the 4th Kyoto University International Symposium, (Dec. 2003, Ann Arbor, USA).

Imura, T., Tomonaga, M., Imada, M. (2003) The effect of cast shadows on pictorial depth perception in chimpanzees and humans. . 21st Century COE program of Kyoto University Psychology Union The First International Workshop for Young Psychologists "Evolution and Development of Cognition" (Jul. 2003, Kyoto, Japan) Program & Abstracts : P-26.

Kuwahata, H., Adachi, I., Fujita, K., Tomonaga, M., Matsuzawa, T. (2003) Development of schematic face preference in macaque monkeys. 21st Century COE program of Kyoto University Psychology Union The First International Workshop for Young Psychologists "Evolution and Development of Cognition" (Jul. 2003, Kyoto, Japan) Program & Abstracts : P-14.

Mizuno, Y., Tomonaga. M., Takeshita, H. (2003) Crying in infants and mother-infant interactions in chimpanzees. 21st Century COE program of Kyoto University Psychology Union The First International Workshop for Young Psychologists "Evolution and Development of Cognition" (Jul. 2003, Kyoto, Japan) Program & Abstracts : P-18.

Myowa-Yamakoshi, M., Tomonaga. M., Tanaka, M., Matsuzawa, T. (2003) Development of face processing in infant chimpanzees. COE21 International Symposium (Sep. 2003, Kyoto, Japan) Program & Abstracts : Poster-5.

Okamoto, S., Tanaka, M., Tomonaga, M. (2003) Development of joint attention in an infant chimpanzee (Pan troglodytes). 21st Century COE program of Kyoto University Psychology Union The First International Workshop for Young Psychologists "Evolution and Development of Cognition" (Jul. 2003, Kyoto, Japan) Program & Abstracts : P-19.

Tanaka, M. (2003) Effects of a chimpanzee mother's behavior on her infant's learning. COE21 INTERNATIONAL SYMPOSIUM, "Diversity of Cognition" (Sep. 2003, Kyoto, Japan).

Tomonaga, M. (2003) Perceptual bases for gaze recognition in chimpanzees (Pan troglodytes). . COE21 International Symposium "Diversity of Cognition: Evolution, Development, Domestication, and Pathology" (21st Century COE program of Kyoto University Psychology Union) (Sep. 2003, Kyoto, Japan) Program & Abstracts : Talk-2.

Tomonaga, M., Okamoto, S., Myowa-Yamakoshi, M. (2003) Gaze recognition in chimpanzees (Pan troglodytes). Kyoto University International Symposium (Kyoto-Michigan Collaboration in Psychology) "Self, Cognition, and Emotion". (Dec. 2003, Ann Arbor, USA) Program & Abstracts : 64.

Uchikoshi, M., Matsuzawa, T. (2003) Behavioral development of agile gibbons : The first five years after the birth. 21st Century COE program of Kyoto University Psychology Union The First International Workshop for Young psychologists "Evolution and Development of Cognition" (July. 2003). Program & Abstracts : Oral-7.

Humle, T., Matsuzawa, T. (2002) Ant-dipping among the chimpanzees of Bossou, Guinea, and some comparisons with other sites. American Journal of Primatology 58(3): 133-148.

Kawakami, K., Tomonaga, M., Suzuki, J. (2002) The calming effect of stimuli presentation on infant Japanese macaques (Macaca fuscata) under stress situation: A preliminary study. Primates 43: 73-85.

Okamoto, S., Tomonaga, M., Ishii, K., Kawai, N., Tanaka, M., Matsuzawa, T. (2002) An infnat chimpanzee (Pan troglodytes) follows human gaze. Animal Cognition 5: 97-114.

Shimizu, K., Douke, C., Fujita, S., Matsuzawa, T., Tomonaga, M., Tanaka, M., Matsubayashi, K., Hayashi, M. (2003) Urinary steroids, FSH and CG measurements for monitoring the ovarian cycle and pregnancy in the chimpanzee. Journal of Medical Primatology 32: 15-22.

Tomonaga, M., Matsuzawa, T. (2002) Enumeration of briefly presented items by the chimpanzee (Pan troglodytes) and humans (Homo sapiens). Animal Learning & Behavior 30: 143-157.

Bard, K. A., Myowa-Yamakoshi, M., Quinn, J., Tomonaga, M., Matsuzawa, T. (2002) 'Cultural' differences in mutual gaze between mother and infant chimpanzees. The XIXth Congress of the International Primatological Society (Aug. 2002, Beijing, China).

Biro, D., Matsuzawa, T. (2002) Numerical stroop in the chimpanzee: Evidence of a symbolic distance effect. COE International Symposium (Nov. 2002, Inuyama, Japan).

Biro, D., Matsuzawa, T. (2002) Numerical stroop in the chimpanzee: Evidence of a symbolic distance effect. COE International Symposium (Nov. 2002, Inuyama, Japan).

Chatani, K., Ochiai, T., Mizuno, Y., Tomonaga, M. (2002) Development of dropping and leaping down in chimpanzee infants. The XIXth Congress of the International Primatological Society (Aug. 2002, Beijing, China).

Hayashi, M., Matsuzawa, T. (2002) Development of orienting manipulation in infant chimpanzees. The XIXth Congress of the International Primatological Society (Aug. 2002, Beijing, China).

Hayashi, M., Mizuno, Y., Matsuzawa, T. (2002) Introduction of nut-cracking behavior into three captive chimpanzees. COE International Symposium (Nov. 2002, Inuyama, Japan).

Imura, T., Tomonaga, M., Imada, H. (2002) The corridor illusion in chimpanzees (Pan troglodytes) and humans (Homo sapiens): Effect of linear perspective on relative size discrimination. COE International Symposium, (Nov. 2002, Inuyama, Japan).

Kuwahata, H., Fujita, K., Tomonaga, M., Adachi, I., Ishikawa, S., Myowa-Yamakoshi, M., Tanaka, M., Matsuzawa, T. (2002) Development of schematic face recognition by chimpanzees and macaque monkeys: Effects of whole and parts of faces. COE International Symposium (Nov. 2002, Inuyama, Japan).

Matsuno, T., Tomonaga, M. (2002) Visual search for motion in infant and adult chimpanzees (Pan troglodytes). COE International Symposium, (Nov. 2002, Inuyama, Japan).

Matsuzawa, T. (2002) Monkey culture and chimpanzee culture. The XIXth Congress of the International Primatological Society (Aug. 2002, Beijing, China).

Mikami, A., Matsui, M., Nishimura, T., Tanaka, M., Tomonaga, M., Matsuzawa, T., Suzuki, J., Kato, A., Matsubayashi, K., Goto, S., Hashimoto, C. (2002) Development of the brain in baby chimpanzees. The Federation of Asian-Oceanian Neuroscience Societies (Aug. 2002, Seoul, Korea).

Mikami, A., Matsui, M., Nishimura, T., Tanaka, M., Tomonaga, M., Matsuzawa, T., Suzuki, J., Kato, A., Matsubayashi, K., Goto, S., Hashimoto, C. (2002) A MRI study of brain structures in infant chimpanzees. COE International Symposium, (Nov. 2002, Inuyama, Japan).

Mizuno, Y., Tanaka, M., Tomonaga, M., Matsuzawa, T., Takeshita, H. (2002) A study of "Laugh" in infant chimpanzees. COE International Symposium (Nov. 2002, Inuyama, Japan).

Murai, C., Kosugi, D., Tomonaga, M. (2002) Do infant chimpanzees (Pan troglodytes) categorize objects? COE International Symposium (Nov. 2002, Inuyama, Japan).

Nakashima, N., Matsuzawa, T. (2002) Developmental changes of the responses to the vocalizations in infant chimpanzees. COE International Symposium (Nov. 2002, Inuyama, Japan).

Okamoto, S., Tanaka, M., Tomonaga, M. (2002) Looking back: The "representational mechanism" of joint attention in an infant chimpanzee (Pan troglodytes). COE International Symposium (Nov. 2002, Inuyama, Japan).

Okamoto, S., Tomonaga, M., Ishii, K., Matsuzawa, T. (2002) Use of experimenter-given cues by chimpanzee infants. The XIXth Congress of the International Primatological Society (Aug. 2002, Beijing, China).

Shimizu, K., Douke, C., Fujita, S., Matsuzawa, T., Tomonaga, M., Tanaka, M., Matsubayashi, K., Hayashi, M. (2002) Assessing the female reproductive cycles of great apes and macaques by determination of steroids, FSH and CG in urine. The XIXth congress of the international Primatological Society (Aug. 2002, Beijing, China).

Sousa, C., Okamoto, S., Matsuzawa, T. (2002) Cognitive development of an infant chimpanzee. The XIXth Congress of International Primatological Society (Aug. 2002, Beijing, China).

Sousa, C., Matsuzawa, T. (2002) The use of tokens as exchange tools by chimpanzees. The XIXth Congress of International Primatological Society (Aug. 2002, Beijing, China).

Sousa, C., Okamoto, S., Matsuzawa, T. (2002) Behavioural development of an infant chimpanzee in a complex computer controlled task. COE International Symposium (Nov. 2002, Inuyama, Japan).

Takeshita, H., Mizuno, Y., Fragaszy, D., Tomonaga, M., Tanaka, M., Matsuzawa, T. (2002) Exploring by Doing: How young chimpanzees explore surfaces and objects. The XIXth Congress of the International Primatological Society (Aug. 2002, Beijing, China).

Tanaka, M., Tomonaga, M., Matuzawa, T. (2002) Development of drawing in infant chimpanzees. The XIXth Congress of the International Primatological Society (Aug. 2002, Beijing, China).

Tanaka, M. (2002) Visual preference by chimpanzees (Pan troglodytes) for photos of primates measured by a free choice-order task. COE International Symposium (Nov. 2002, Inuyama, Japan).

Tomonaga, M., Tanaka, M., Myowa-Yamakoshi, M., Matsuzawa, T. (2002) Behavioral and cognitive development of infant chimpanzees (Pan troglodytes): Overview of the research project in the Primate Research Institute, Kyoto University. The XIXth Congress of the International Primatological Society (Aug. 2002, Beijing, China).

Tomonaga, M., Myowa-Yamakoshi, M., Yamaguchi, M. K., Okamoto, S., Kosugi, D., Bard, K. A. (2002) Developmental changes in the recognition of gaze in infant chimpanzees (Pan troglodytes). COE International Symposium (Nov. 2002, Inuyama, Japan).

Tomonaga, M., Imura, T. (2002) Relative numerosity judgement in chimpanzees. COE International Symposium (Nov. 2002, Inuyama, Japan).

Uchikoshi, M., Matsuzawa, T. (2002) Development of Agile Gibbons. COE International Symposium (Nov. 2002, Inuyama, Japan).

Uozumi, M., Tomonaga, M., Yamazaki, Y., Watanabe, S., Kojima, S. (2002) Name recognition by chimpanzees (Pan troglodytes). COE International Symposium (Nov. 2002, Inuyama, Japan).

Biro, D. & Matsuzawa, T. (2001) Use of numerical symbols by the chimpanzee (Pan troglodytes): Cardinals, ordinals, and the introduction of zero. Animal Cognition 4: 193-199.

Fagot, J. & Tomonaga, M. (2001) Effects of element separation on the perception of Kanizsa illusory figures by Humans (Homo sapiens) and Chimpanzees (Pan troglodytes). Animal Cognition 4: 171-177.

Hirata, S. & Matsuzawa, T. (2001) Tactics to obtain a hidden food item in chimpanzee pairs (Pan troglodytes). Animal Cognition 4: 285-295.

Iversen, I. H. & Matsuzawa, T. (2001) Acquisition of navigation in an automated fingermaze task for the chimpanzee. Animal Cognition 4: 179-192.

Kawai, N. & Matsuzawa, T. (2001) "Magical number 5 " in a chimpanzee. Behavioral and Brain Sciences 24: 127-128.

Morimura, N. & Matsuzawa, T. (2001) Memory of movies by chimpanzees (Pan troglodytes). Journal of Comparative Psychology 115: 152-158.

Myowa-Yamakoshi, M. & Tomonaga, M. (2001) Development of face recognition in an infant gibbon (Hylobates agilis). Infant Behavior and Development 24: 215-227.

Sousa, C. & Matsuzawa, T. (2001) The use of tokens as rewards and tools by chimpanzees. Animal Cognition 4: 213-221.

Tanaka, M. (2001) Discrimination and categorization of photographs of natural objects by chimpanzees (Pan troglodytes). Animal Cognition 4: 201-211.

Tomonaga, M. (2002) Action-based distractor effects on the manual response times of chimpanzees during discrimination tasks. Cognitive Brain Research 13:235-240.

Matsuzawa, T. & Tomonaga, M. (2001). For a rise of comparative cognitive science. Animal Cognition 4: 133-135.

Celli, M., Tomonaga, M., Udono, T., Teramoto, M. & Nagano, K. (2001). Tool using task as environmental enrichment for captive chimpanzees. 5th International Conference on Environmental Enrichment (Nov. 2001, Sydney, Australia).

Hayashi, M., Koyasu, M. & Matsuzawa, T. (2002) Development of orienting-manipulation in chimpanzees (Pan troglodytes): Changes in the first 20 months assesed by a diagnostic test for cognitive development. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p.50.

Hirata, S. & Ueno, A. (2002) Learning of a food processing technique in an infant chimpanzee and his observations of skilled mother. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 80.

Humle, T. & Matsuzawa, T. (2001) Ant-dipping at Bossou and its cultural implications. The 4th International SAGA Symposium (Nov. 2001, Okayama). Abstracts p. 32-33.

Imura, T. Tomonaga, M., Matsuzawa, T. & Imada, H. (2002) Perception of shape from shading in chimpanzee infants. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 49.

Kawai, N., Horimoto, N., Morokuma, S., Douke, C., Tanaka, M., Tomonaga, M. & Matsuzawa, T. (2002) Classical conditioning in a chimpanzee fetus. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 75.

Kuwahata, H., Ishikawa, S., Fujita, K., Tomonaga, M., Myowa-Yamakoshi, M., Tanaka, M. & Matsuzawa, T. (2002) Schematic face recognition by infant chimpanzees and macaque monkeys. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 65.

Matsuzawa, T. (2002) The difference of cultural transmission in monkeys, chimpanzees, and humans. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Kyoto).

Mizuno, Y., Tomonaga, M. & Takeshita, H. (2002) Development of spontaneous smiling in infant chimpanzees. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 45.

Morimura, N. & Matsuzawa, T. (2002) Moview discrimination and its retention by chimpanzees. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002,Inuyama). Abstracts p. 33.

Murai, C., Tomonaga, M., Kosugi, D. & Itakura, S. (2002) Perceptual categorization by humans infants and chimpanzee infants. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 36.

Nakashima, N. & Matsuzawa, T. (2002) Developmental changes of the responses in infant chimpanzees to the species-specific vocalizations. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 51.

Nakayama, K., Terazawa, N. & Tomonaga, M. (2002) Observation of conspecifics scratching induces negative emotional contagion in Japanese monkeys. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 41.

Ochiai-Ohira T. & Matsuzawa T. (2001) Introduction of climbing structures into chimpanzee enclosures: an assessment of enrichment. 5th International Conference on Environmental Enrichment (Nov. 2001, Sydney). Proceeding of the 5th International Conference on Environmental Enrichment.

Okamoto, S., Tomonaga, M., Ishii, K., Myowa-Yamakoshi, M., Tanaka, M. & Matsuzawa, T. (2002) Use of experimenter-given cues during object-choice tasks by chimpanzee infants. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 46.

Sekine, S., Takeshita, H., Mizuno, Y., Chatani, K., Idani, G., Morimura, N., Fuwa, K. & Matsuzawa, T. (2002) Development of object manipulation and social interaction in infant chimpanzees. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 43.

Sousa, C., Okamoto, S. & Matsuzawa, T. (2001) Behavioral development of Ayumu during the token experiment performed by Ai. The 4th International SAGA Symposium(Nov. 2001, Okayama). Abstracts p. 42.

Sousa, C., Okamoto, S. & Matsuzawa, T. (2002) Behavioral development of an infant chimpanzee (Ayumu) and his relationship with his mother (Ai) during token experiments. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 81.

Takemoto, H. & Hirata, S. (2002) Recent observation on non-human primates in Rio Muni, Equatorial Guinea. Inuyama COE International Symposium "Research on long-lived animals: the past, present and future of longitudinal studies" (Jan. 2002, Inuyama). Abstracts p. 55.

Takemoto, H., Hirata, S. & Sugiyama, S. (2002) Manufacture and use of brush-sticks by chimpanzees. Inuyama COE International Symposium "Research on long-lived animals: the past, present and future of longitudinal studies" (Jan. 2002, Inuyama). Abstracts p. 61.

Takeshita, H., Takaya, R., Taga, G., Mizuno, Y., Itakura, S., Konishi, Y., Tanaka, M., Tomonaga, M. & Matsuzawa, T. (2002) Comparison of early development of postural control in chimpanzee and human infants. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 42.

Tanaka, M. (2002) Recognition of pictorial representations in chimpanzees. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 69.

Tomonaga, M., Okamoto, S., Myowa-Yamakoshi, M. & Yamaguchi, M. (2002) Recognition of face and gaze in infant chimpanzees (Pan troglodytes). The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 66.

Uchikoshi, M., Kato, A., Maeda, N. & Matsuzawa, T. (2002) The behavioral development of gibbons. The 2nd International Symposium on Comparative Cognitive Science (Feb. 2002, Inuyama). Abstracts p. 44.

Ueno, A., Douke, C. & Matsuzawa, T. (2002) The development of food selection habits in chimpanzee infants with special reference to mothers' influences on it. The 2nd international symposium on comparative cognitive science (Feb. 2002, Inuyama). Abstracts p. 40

Yamakoshi, G., Hirata, S., Ohashi, G. & Matsuzawa, T. (2002) Current conservation status of Bossou chimpanzees: Local tradition, habitat isolation and corridor-building project (Green Passage Plan). Inuyama COE International Symposium "Research on long-lived animals: the past, present and future of longitudinal studies" (Jan. 2002, Inuyama). Abstracts p. 63.

Celli, M. L., Tomonaga, M., Udono, T., Teramoto, M. & Nagano, K. (2001) Learning processes in the acquisition of a tool using task by captive chimpanzees. Psychologia 44: 70-81.

Hirata, S., Yamakoshi, G., Fujita, S., Ohashi, G. & Matsuzawa, T. (2001) Capturing and toying with hyraxes (Dendrohyrax dorsalis) by wild chimpanzees (Pan troglodytes) at Bossou, Guinea. American Journal of Primatology 53: 93-97.

Kawai, N. (2000). The number of trial upon the effects of US duration in conditioned licking suppression with rats. Japanese Journal of Animal Psychology 50: 21-26.

Kawai, N & Matsuzawa, T. (2000) A conventional approach to chimpanzee: Response to M.D.Hauser (2000). Trends in cognitive sciences 4 (4) : 128-129.

Myowa-Yamakoshi M. & Matsuzawa T. (2000) Imitation of intentional manipulatory actions in chimpanzees. Journal of Comparative Psychology 114: 381-391.

Myowa-Yamakoshi M & Tomonaga M. (2001) Perceiving eye gaze in an infant gibbon. Psychologia 44: 24-30.

Tomonaga, M. (2001) Visual search for biological motion patterns in chimpanzees (Pan troglodytes). Psychologia 44: 46-59.

Tomonaga, M. & Matsuzawa, T. (2000) Sequential responding to Arabic numerals with wild cards by the chimpanzee (Pan troglodytes). Animal Cognition 3: 1-11.

Tsuji, K., Hayashibe, K., Hara, M. & Matsuzawa, T. (2000) Visuo-motor development which causes detection of visual depth from motion and density cues. Swiss Journal of Psychology 59 (2) : 102-107.

Biro, D. & Matsuzawa, T. (2001) Chimpanzee numerical competence: Cardinal and ordinal skills. In: Primate Origins of Human Cognition and Behavior (ed. Matsuzawa, T.). Springer-Verlag, Tokyo, pp. 199-225.

Fagot, J., Tomonaga, M. & Deruelle, C. (2001) Processing of global and local dimensions of visual hierarchical stimuli by humans (Homo sapiens), chimpanzees (Pan troglodytes), and baboons (Papio papio). In: Primate Origins of Human Cognition and Behavior (ed. Matsuzawa, T.). Springer-Verlag, Tokyo, pp. 87-103.

Iversen, I. H. & Matsuzawa, T. (2001). Establishing line tracing on a touch monitor as a basic drawing skill in chimpanzees (Pan troglodytes). In: Primate Origins of Human Cognition and Behavior (ed. Matsuzawa, T.). Springer-Verlag, Tokyo, pp. 235-268.

Kawai, N. & Matsuzawa, T. (2001) Reproductive memory processes in chimpanzees: Homologous approaches to research on human working memory. In: Primate Origins of Human Cognition and Behavior (ed. Matsuzawa, T.). Springer-Verlag, Tokyo, pp. 226-234.

Matsuzawa, T. (ed.) (2001) Primate Origins of Human Cognition and Behavior. Springer-Verlag, Tokyo, 587pp.

Matsuzawa, T. (2001) Primate foundation of human intelligence: A view of tool use in nonhuman primates and fossil hominids. In: Primate Origins of Human Cognition and Behavior (ed. Matsuzawa, T.). Springer-Verlag, Tokyo, pp. 3-25.

Matsuzawa, T., Biro, D., Humle, T., Inoue-Nakamura, N., Tonooka, R. & Yamakoshi, G. (2001) Emergence of culture in wild chimpanzees: Education by master-apprenticeship. In: Primate Origins of Human Cognition and Behavior (ed. Matsuzawa, T.). Springer-Verlag, Tokyo, pp. 557-574.

Myowa-Yamakoshi, M. (2001) Evolutionary foundation and development of imitation. In: Primate Origins of Human Cognition and Behavior (ed. Matsuzawa, T.). Springer-Verlag, Tokyo, pp. 349-367.

Tomonaga, M. (2001) Investigation visual perception and cognition in chimpanzees (Pan troglodytes) through visual search and related tasks: From basic to complex processes. In: Primate Origins of Human Cognition and Behavior (ed. Matsuzawa, T.). Springer-Verlag, Tokyo, pp. 55-86.

Tomonaga, M. & Matsuzawa, T. (2001) Editorial. Psychologia 44: 1-2.

Celli, M., Tomonaga, M., Udono, T. & Teramoto, K. (2000) Nagano Environmental enrichment effects of a tool using task for captive chimpanzees. The 3rd SAGA Symposium “Research, Care and Conservation of Great Apes; Current states and future directions” (Nov. 2000, Inuyama).

Celli, M. & Tomonaga, M. (2000) Object sharing among captive chimpanzees - Cases of study. The 3rd SAGA Symposium “Research, Care and Conservation of Great Apes; Current states and future directions” (Nov. 2000, Inuyama).

Fujita, K. & Matsuzawa, T. (2001) Spatiotemporal boundary formation in chimpanzees. International conference on “Development of mind” (Aug. 2000, Tokyo). Proceedings p. 131.

Hirai, H., Suzuki, J., Miwa, N., Maeda, N., Kumazaki, K., Katoh, A., Tomonaga, M., Tanaka, M., Matsuzawa, T. (2000) Telomere dynamics between parents and offspring of the chimpanzee. The 3rd SAGA Symposium “Research, Care and Conservation of Great Apes; Current states and future directions” (Nov. 2000, Inuyama).

Hirata, S., Morimura, N. & Matsuzawa, T. (2001) Observation of conspecifics and use of left-over tools during learning process of a tool-using task in chimpanzees. The XVIIIth Congress of the International Primatological Society (Jan. 2001, Adelaide, Australia). Abstracts and Programme p. 292.

Ishikawa, S., Fujita, K., Kuwahata, H., Tomonaga, M. & Matsuzawa, T. (2001). Perception of biological motion in infant macaques: The effects of rearing conditions. The XVIIIth Congress of the International Primatological Society (Jan. 2001, Adelaide, Australia).

Itakura, S., Myowa, M., Tomonaga, M. & Matsuzawa, T. (2000) Differential rooting response by baby chimpanzees. The 3rd SAGA Symposium “Research, Care and Conservation of Great Apes; Current states and future directions” (Nov. 2000, Inuyama).

Kawai, N. (2000) Numerical memory span in a chimpanzee and humans. International Conference on “Development of mind” (Aug. 2000, Tokyo). Proceedings p.126.

Matsuzawa, T. (2000) Development of tool use in chimpanzees at Bossou. Symposium on Behavioural Diversity in Chimpanzees and Bonobos (June 2000, Bavaria, Germany).

Matsuzawa, T. (2000) Tool use and culture in wild chimpanzee. The XXXVIIth International Congress of Psychology (July 2000, Stockholm, Sweden).

Matsuzawa, T. (2000) Social transmission of knowledge among wild chimpanzees. Conference on Animal Social Complexity and Intelligence (Aug. 2000, Chicago, USA).

Matsuzawa, T. (2000) Development of stone-tool use in wild chimpanzees at Bossou, Guinea-Conakry. COE International Symposium “Development and aging of primates” (Nov. 2000, Inuyama).

Matsuzawa, T. (2001) A perspective of comparative cognitive science. Kyoto University - Universite Louis Pasteur 10th Anniversary Symposium “From molecular, stress signal to cognition” (Feb. 2001, Kyoto). Program and Abstracts p.

Matsuzawa, T. (2001) Cognitive development in chimpanzees. GEMINI Workshop on Ape Genomics (Mar. 2001, Tokyo).

Myowa-Yamakoshi, M. & Matsuzawa, T. (2000) Understanding other's intentional actions in chimpanzees. International conference on“Development of mind”(Aug., 2000, Tokyo). Proceedings p. 128.

Myowa-Yamakoshi, M., Matsuzawa, T., Tomonaga, M. & Tanaka, M. (2000) Imitation of facial gestures in neonatal chimpanzees (Pan troglodytes). COE International Symposium “Development and aging of primates” (Nov. 2000, Inuyama). Abstracts p. 50.

Myowa-Yamakoshi, M. (2001) Understanding other's intention in chimpanzees The XVIIIth congress of the international primatological society (Jan. 2001, Adelaide, Australia). Abstracts and Programme p. 208.

Nakayama, K., Terazawa, N. & Tomonaga, M. (2000) Presence of companions functions as a buffer against social stress-Stress coping strategy of infant Japanese monkeys. COE International Symposium “Development and aging of primates” (Nov. 2000, Inuyama). Abstracts p.54.

Sausa, C. & Matsuzawa, T. (2000) Tool use for drinking water in wild chimpanzees (Pan troglodytes): a field experiment. The 16th Annual Meeting of Primate Society of Japan (July 2000, Nagoya). Primate Research 16 (3) : 279.

Sousa, C. & Matsuzawa, T. (2001) Learning of a new discrimination task by tokens in chimpanzees (Pan troglodytes): A case of stimulus equivalence. International conference on “Development of mind” (Aug. 2000, Tokyo). Proceedings p. 129.

Sousa, C. M. & Matsuzawa, T. (2000) What is a token for chimpanzees, a reward or a tool? The 3rd SAGA Symposium “Research, Care and Conservation of Great Apes; Current states and future directions” (Nov. 2000, Inuyama).

Tanaka, M. (2000) Visual preference based on species in chimpanzees. International conference on “Development of mind” (Aug. 2000, Tokyo). Proceedings p. 130.

Tomonaga, M. (2000) Visual perception in chimpanzees (Pan troglodytes) from infants to adults. International conference on “Development of mind” (Aug. 2000, Tokyo). Proceedings pp. 58-62.

Tomonaga, M., Tanaka, M., Myowa-Yamakoshi, M. & Matsuzawa, T. (2000). Cognitive development of infant chimpanzees (Pan troglodytes): Overview of the research project. COE International Symposium “Development and aging of primates” (Nov. 2000, Inuyama). Abstracts p. 49.

Tomonaga, M. (2001) Visual search for the orientations of faces by a chimpanzee (Pan troglodytes). XVIIIth congress of the International Primatological Society (Jan. 2001, Adelaide, Australia). Abstracts and Programme p. 433

Tomonaga, M. (2001) Gaze priming in chimpanzees (Pan troglodytes) ? The XVIIIth Congress of the International Primatological Society (Jan. 2001, Adelaide, Australia). Abstracts and Programme p. 193.

Tomonaga,M., Tanaka, M., Myowa-Yamakoshi, M. & Matsuzawa, T. (2001) Cognitive development of infant chimpanzees. Kyoto University - Universite Louis Pasteur 10th Anniversary Symposium “From molecular, stress signal to cognition” (Feb. 2001, Kyoto). Program and Abstracts p. 18.

Tonooka, R., Tomonaga, M. & Matsuzawa, T. (2001). Drinking with leaves by chimpanzees (Pan troglodytes) in wild and captivity. The XVIIIth Congress of the International Primatological Society (Jan. 2001, Adelaide, Australia).

Biro, D. & Matsuzawa, T. (1999) Numerical ordering in a chimpanzee (Pan troglodytes): planning, executing, and monitoring. Journal of Comparative Psychology, 113(2): 178-185.

Kawai, N., & Kitaguchi, K., (1999) Evidences for within-compound learning in an instrumental conditioning with rats, Behavioural Processes. 44(3), 317-322

Kawai, N., & Sugioka, K., (1999) A study of emotionality assessed using licking suppression in rats with microencephaly induced by prenatal methylazoxym ethanolacetate (MAM) treatment, Behavioral Science Research. 38(1), 1-6

Kawai, N. & Matsuzawa, T., (2000) Numerical memory span in a chimpanzee. Nature, 403, 39-40

Fagot, J, Deruelle, C., & Tomonaga, M (1999). Perception des dimensions globales et locales de stimuli visuels chez le primate. Primatologie, 2, 61-77.

Myowa-Yamakoshi,M., & Matsuzawa,T. (1999). Factors influencing imitation of manipulatory actions in chimpanzees (Pan troglodytes). Journal of Comparative Psychology,113,128-136.

Tomonaga, M. (1999). Establishing functional classes in a chimpanzee (Pan troglodytes) with a 2-item sequential-responding procedure. Journal of the Experimental Analysis of Behavior, 72, 57-79.

Tomonaga, M. (1999). Inversion effect in perception of human faces in a chimpanzee (Pan troglodytes). Primates, 40, 417-438.

Matsuzawa, T. (1999) Communication and tool use in chimpanzee: Cultural and social contexts. In: The design of Animal communication (eds.Hauser, M. & Konishi, M.). Cambridge University Press, pp.645-671.

Matsuzawa, T., Takemoto, H., Hayakawa, S. & Shimada, M. (1999) Diecke forest in Guinea. Pan Africa News, 6(1): 10-11.

Celli, M., Tomonaga, M., Udono, T., Teramoto, M.,& Nagano, T. (1999). Learning processes in a tool using task by captive chimpanzees (Pan troglodytes). SAGA2 & COE International Symposium "Evolution of the Apes and the Origin of the Human Beings." (November, 1999, Inuyama, Japan) Abstracts, p.10.

Celli, M., Tomonaga, M., Udono, T., Teramoto, M.,& Nagano, T. (1999). Learning processes in a tool using task by captive chimpanzees (Pan troglodytes). COE International Symposium "Phylogeny of Cognition and Language," (March, 2000, Inuyama, Japan). Abstracts, p.17.

Hashiya, K., Ishikawa, S., Fujita, K., & Tomonaga, M. (1999). The "initial knowledge" about the correspondence of auditory-visual events in macaque infants. SAGA2 & COE International Symposium "Evolution of the Apes and the Origin of the Human Beings." (November, 1999, Inuyama, Japan) Abstracts, p.30.

Kawai, N. & Matsuzawa, T. (1999) "The magical number 5" in a chimpanzee. COE international symposium "Evolution of the ape and the origin of the human beings," (November, 1999 Inuyama, Japan). Abstracts, p. 38.

Kawai, N. (2000) Short-term memory in symbol use in a chimpanzee. COE International Symposium "Phylogeny of Cognition and Language," (March, 2000, Inuyama, Japan). Abstracts, p. 38.

Matsuzawa, T. (1999) Intelligence and culture in chimpanzees. SAGA2 & COE International Symposium "The Evolution of Apes and the Origin of Human Beings" (November, 1999, Inuyama, Japan). Abstracts, p. 43.

Matsuzawa, T. (2000) Chimpanzee intelligence in the laboratory and in the wild. COE International Symposium "Phylogeny of Cognition and Language", (March, 2000, Inuyama, Japan). Abstracts, p. 47.

Myowa-Yamakoshi, M., & Matsuzawa, T. (1999) Imitation of intentional manipulatory actions in chimpanzees (Pan troglodytes). SAGA2 & COE International Symposium "The Evolution of Apes and the Origin of Human Beings" (November, 1999, Inuyama, Japan). Abstracts, p. 45.

Myowa-Yamakoshi, M. (2000) Evolutionary foundation and development of imitation (Pan troglodytes). COE International Symposium "Phylogeny of Cognition and Language", (March, 2000, Inuyama, Japan). Abstracts Pp. 16.

Tanaka, M., & Matsuzawa, T. (1999) Discrimination and categorization of pictures of natural objects by chimpanzees (Pan troglodytes). SAGA2 & COE International Symposium "The Evolution of Apes and the Origin of Human Beings" (November, 1999, Inuyama, Japan). Abstracts, p. 68.

Tanaka, M. (2000) Visual perception of natural objects in chimpanzees (Pan troglodytes). COE International Symposium "Phylogeny of Cognition and Language", (March, 2000, Inuyama, Japan). Abstracts, p. 23.

Tomonaga, M. (1999). Visual search tasks investigating the chimpanzee's visual perception and cognition. The 2nd International Conference on Cognitive Science and The 16th Annual Meeting of the Japanese Cognitive Science Society Joint Conference. (July, 1999, Tokyo, Japan). Abstract: proceedings, p.52.

Tomonaga, M. (1999). Perception of shape from shading in the chimpanzee (Pan troglodytes). 22nd European conference on visual perception. (August, 1999, Trieste, Italy). Perception, 28(suppl.), 23

Tomonaga, M. (2000). Visual search by chimpanzees (Pan troglodytes). COE International Symposium "Phylogeny of Cognition and Language," (March, 2000, Inuyama, Japan). Abstracts, p.45.

Tomonaga, M., Suzuki, J., Ohkura, S., Nakamura, M., & Abe, T. (1999). Are cognitive experiments stressful works for the chimpanzee (Pan troglodytes)?: Relationship between performance and physiological factors during cognitive experiments. SAGA2 & COE International Symposium "Evolution of the Apes and the Origin of the Human Beings. (November, 1999, Inuyama, Japan) Abstracts, p.71.

Fagot, J., & Tomonaga, M. (1999) Global-local processing in humans (Homo sapiens) and chimpanzees (Pan troglodytes): Use of a visual search task with compound stimuli. Journal of Comparative Psychology 113: 3-12.)

Itakura, S. & Tanaka, M. (1998) Use of experimenter-given cues during object-choice tasks by chimpanzees (Pan troglodytes), an orangutan (Pongo pygmaeus), and human infants (Homo sapiens). Journal of Comparative Psychology 112: 119-126.

Suzuki, S. (1999) Selection of forced- and free-choice by monkeys (Macaca fascicularis). Perceptual and Motor skills 88: 242-250.

Tomonaga, M. (1998) Perception of shape from shading in chimpanzees (Pan troglodytes) and humans (Homo sapiens). Animal Cognition 1: 25-35.

Tomonaga, M. (1999) Visual texture segregation by the chimpanzee (Pan troglodytes). Behavioural Brain Research 99: 209-218.

Matsuzawa, T. (1998) Chimpanzee behavior: An experimental approach from comparative cognitive science. In "The encyclopedia of comparative psychology" (eds. Greenberg, G. & Haraway, M.), Garland Publishers Inc., NY, pp.360-375.

Hirata, S., Morimura, N., & Matsuzawa, T. (1998) Green Passage Plan (tree-planting project) and environmental education using documentary videos at Bossou: A progress report. Pan African News 5(2): 18-20.

Matsuzawa, T. (1998) Chimpanzees in Japan need help. Pan Africa News 5(2): 20-21.

Fagot, J., Deruelle, C., & Tomonaga, M. (1998) Etude comparative des mecanismes de groupement perceptif chez l'homme, le chimpanze et le babouin (Comparative study of perceptual grouping mechanisms in humans, chimpanzees and baboons). Meeting of the Francophone Society of Primatology, (Oct. 1998, Rousset-sur-Arc, France).

Hirata, S. & Matsuzawa, T. (1998) Chimpanzees' understanding of other chimpanzees' knowledge. Napoli Social Learning Conference. (Jun. 1998, Napoli). Program and Abstracts p. 64.

Huffman, M. A., Hirata, S., & Matsuzawa, T. (1998) Spontaneous leaf swallowing in captive chimpanzees; evidence for a predisposition to perform a behavioral component of great ape self-medication. Napoli Social Learning Conference. (Jun. 1998, Napoli) Program and Abstracts p. 79.

Matsuzawa, T. (1998) An introduction to the chimpanzee population at the Primate Research Center, Kyoto University. The meeting "the management of captive population of chimpanzees". (Nov. 1998, Taiwan).

Matsuzawa, T. (1998) My researches in Africa and in the laboratory. The meeting "the management of captive population of chimpanzees". (Nov. 1998, Taiwan).

Hirata, S., Myowa, M., & Matsuzawa, T. (1998) Use of leaves as cushions to sit on wet ground by wild chimpanzees. American Journal of Primatology 44: 215-220.

Inoue-Nakamura,N. (1997) Mirror self-recognition in nonhuman primates: A phylogenetic approach. Japanese Psychological Research 39:266-275.

Inoue-Nakamura,N. & Matsuzawa, T. (1997) Development of stone tool use by wild chimpanzees (Pan troglodytes). Journal of Comparative Psychology. 111: 159-173.

Iversen, I. & Matsuzawa, T.(1997) Model-guided line drawing in the chimpanzee (Pan troglodytes).　Japanese Psychological Research, 39:154-181.

Sato, A., Kanazawa, S., & Fujita, K. (1997) Perception of object unity in a chimpanzee, Japanese Psychological Research 39: 191-199.

Suzuki, S., & Matsuzawa, T. (1997) Choice between two discrimination tasks in chimpanzees (Pan troglodytes). Japanese Psychological Research. 39:226-235.

Tanaka,M.(1997) Formation of categories based on functions in a chimpanzee (Pan troglodytes). Japanese Psychological Research 39:212-225.

Tomonaga, M. (1997) Precuing the target location in visual searching by a chimpanzee (Pan troglodytes): Effects of precue validity. Japanese Psychological Research 39: 200-211.

Tonooka, R., Tomonaga, M., & Matsuzawa, T. (1997) Acquisition and transmission of tool making and use for drinking juice in a group of captive chimpanzees. Japanese Psychological Research 39: 253-265.

Matsuzawa, T. (1997) Phylogeny of intelligence: A view from Cognitive behavior of chimpanzees. IIAS Reports, No.1997-004:17-26.

Matsuzawa, T., Kojima, S. & Shinohara, S.(1997)Editorial: A brief note on the background of the study of cognition and behavior of chimpanzees by Japanese researchers. Japanese Psychological Research, 39(3):133-139.

Matsuzawa T. (1997) The death of an infant chimpanzee at Bossou, Guinea. Pan Africa News, 4(1):4-6.

Fagot, J., & Tomonaga, M. (1998). Comparative assessment of global/local processing in humans, chimpanzees and baboons. The International Conference on Comparative Cognition. Orlando, FL, USA, March 12-14, 1998

Ochiai, T. and Matsuzawa, T. (1997) Planting trees in an outdoor compound of chimpanzees for an enriched environment. The Third International Conference On Environmental Enrichment(Oct. 1997, FL U. S.A.)

Tomonaga, M. (1998). Perception of biological motions in chimpanzees. Colloquium for the animal-infant cognition subgroup of Monbusho Grant-in-Aid "The develop of mind". Tokyo, Japan, January 21, 1998.

Iversen, I. & Matsuzawa, T. (1996) Visually guided drawing in the chimpanzee (Pan troglodytes). Japanese Psychological Research, 38: 126-135.

Matsuzawa, T. (1996) Chimpanzee intelligence in nature and captivity: isomorphism of symbol-use and tool-use in chimpanzees. In McGrew, W. et al. (eds.), Great Ape Societies. Cambridge Univ. Press, pp.196-209.

Matsuzawa, T., Kojima, S., & Jitsumori, M. (1996) Editorial: A brief note on the historical background of the study of cognition and behavior in nonhuman primates by Japanese researchers. Japanese Psychological Research, 38: 109- 112.

Tomonaga, M. (1996) Visual perception in chimpanzees (Pan troglodytes): Texture segregation and perception of shape from shading. Annual Report of Grant-in-Aid for Scientific Research Ministry of Education, Science, Sports, and Culture "The emergence of human cognition and language", vol. 3, 89-98．

Greene, H., & Tomonaga, M. (1996) Perception. Symposium of 1996 meeting of the Southern Society for Philosophy and Psychology, "Overview of (primate) cognition" (April, 1996, Nashville, TN, USA).

Inoue-Nakamura, N. (1996) Self-directed behaviors in chimpanzees. Workshop "What is evidence for mirror- or video-self-recognition." The 16th congress of the International Primatological Society (August, 1996, Madison, USA).

Inoue-Nakamura, N. (1996) Mirror self-recognition in primates: A phylogenetic approach. XXVI International congress of psychology (August, 1996, Montreal, Canada).

Inoue-Nakamura, N. & Matsuzawa, T. (1996) Development of stone tool-use by wild chimpanzees. The 16th congress of the International Primatological Society (August, 1996, Madison, USA).

Matsuzawa, T. (1996) Phylogeny of intelligence: A view from cognitive behavior of chimpanzees. The 3rd Brain and Mind International Symposium "Concept Formation, Thinking, and their development" (May-June, 1996, Kyoto, Japan).

Matsuzawa, T. (1996) Field experiments on tool use and its social transmission by wild chimpanzees. The 16th congress of the International Primatological Society (August, 1996, Madison, USA).

Matsuzawa, T. (1996) Two behavioral standards to promote Psychological well-being of captive chimpanzees. The 16th congress of the International Primatological Society (August, 1996, Madison, USA).

Matsuzawa, T. (1996) Chimpanzee intelligence in the laboratory and in the wild. The 32nd Nobel Conference "Apes at the end of an age: Primate language and behavior in the 90s" (October, 1996, Minnesota, USA).

Matsuzawa, T. (1996) Evolution of intelligence: A view from linguistic and cognitive functions of chimpanzees. International workshop of Kansai Advanced Research Center "Brain, Computers, and Evolution" (December, 1996, Kobe, Japan).

Tomonaga, M. (1996) Visual perception in chimpanzees (Pan troglodytes) under the texture segregation and visual search tasks. The 16th congress of the International Primatological Society (August, 1996, Madison, USA). Abstracts, #336.

Tomonaga, M. (1996) Perception of shape from shading in chimpanzees (Pan troglodytes) and humans (Homo sapiens). XXVI International congress of psychology (August, 1996, Montreal, Canada). International Journal of Psychology, 31(3-4): 197.

Tomonaga, M. (1996) Perception of shape from shading in chimpanzees and humans. International symposium "The emergence of human cognition and language" (September, 1996, Tokyo, Japan).

Tomonaga, M., & Fushimi, T. (1996) Object construction by the chimpanzee (Pan troglodytes) under the conditional discrimination procedure: Emergence of derived stimulus relations. Third international congress on behaviorism and the science of behavior (October, 1996, Yokohama, Japan).

Tonooka, R. (1996) Leaf selectivity and development in leaf-folding behavior by wild chimpanzees at Bossou. The 16th Congress of the International Primatological Society (August, 1996, Madison, USA). Abstracts, #593.

Satoh, A., Kanazawa, S., & Fujita, K.(1996) Perception of object unity in a chimpanzee. The 16th congress of the International Primatological Society (August, 1996, Madison, USA). Abstracts, #338.

Fujita, K, & Watanabe, K. (1995): Visual preference for closely related species by Sulawesi macaques. American Journal of Primatology, 37: 253-261.

Kanazawa, S. (1996): Recognition of facial expressions in a Japanese monkey (Macaca fuscata) and humans (Homo sapiens). Primates, 37: 25-38.

Matsuzawa, T. & Yamakoshi, G. (1996): Comparison of chimpanzee material culture between Bossou and Nimba, West Africa. In: Russon, A., Bard, K., & Parker, S. (eds.) "Reaching into Thought", Cambridge University Press. pp 201-223.

Fujita, K. (1995): Perception of geometric illusions by pigeons, monkeys, and apes. In Nakajima, T, & Ono, T. (eds.), "Emotion, memory and behavior: studies of human and nonhuman primates", Tokyo: Japan Scientific Societies Press, pp.169-179.

Tomonaga, M. (1995). Face perception in a chimpanzee (Pan troglodytes) and humans: Species difference in spatial perception. Anais de Etologia, 13, 20-38.

Fujita, K., Watanabe, K., Widarto, T. H., & Suryobroto, B. (1995): Visual preference for closely-related species by Sulawesi macaques. XXIV International Ethological Conference, August 16, Honolulu. Abstracts p.43.

Fujita, K.,& Kanazawa, S. (1995): How do Japanese monkeys see human smile and sad faces? The 36th Annual Meeting of the Psychonomic Society, November 10, 1995, Los Angeles. Abstracts p.23.

Inoue-Nakamura, N. & Matsuzawa, T. (1995) Developmental processes of nut-cracking skill among infant chimpanzees in the wild. The 24th International Ethological Conference (at Honolulu, Hawaii, August in 1995). Abstract pp.108.

Matsuzawa, T. (1994): Chimpanzee intelligence in the laboratory and in the wild: Construction of symbols and tools. Animal Cognition Seminar of Columbia University (at Columbia Univ. in New York, November in 1994)

Matsuzawa, T. (1995): Tool use and its social transmission in wild chimpanzees. The 24th International Ethological Conference (at Honolulu, Hawaii, August in 1995). Abstract pp.64.

Tomonaga, M. (1995). Face perception by Japanese macaques (Macaca fuscata) under the modified preferential looking task: Implications for an inversion effect. XXIV International Ethological Conference. Honolulu, Hawaii, USA, August 10-17, 1995 (Abstract: Abstracts, p.124)

Tomonaga, M. (1995). Search for symmetry in chimpanzees' (Pan troglodytes) conditional discrimination performance. Symposium of the XXVth annual meeting of the Brazilian Society of Psychology, "Animal cognition: Integration of comparative psychology, psychobiology, and experimental analysis of behavior." Universidade de Sao Paulo, Ribeirao Preto, SP, Brazil, October 25-29, 1995. (Abstract: Resumos, Appendix, p.2.)

Tomonaga, M. (1995). Formation of stimulus equivalence and related problems in chimpanzees (Pan troglodytes). Invited lecture of the XXVth annual meeting of the Brazilian Society of Psychology. Universidade de Sao Paulo, Ribeirao Preto, SP, Brazil, October 25-29, 1995.

Tomonaga, M. (1995). Face perception in a chimpanzee (Pan troglodytes) and humans: Species difference in spatial perception. Invited lecture of the XIIIth annual meeting of the Brazilian Society of Ethology. Universidade de Sao Paulo, Pirassununga, SP, Brazil, November 2-4, 1995. (Abstarct: Anais de Etologia, 13, 20-38.)

Tonooka, R. (1995): Leaf-folding behavior for drinking water by wild chimpanzees. XXIV International Ethological Conference. (Honolulu, Hawai, August, 1995). Abstracts p.124.

Tonooka, R. (1995): Hand preferences and manipulation in chimpanzees (Pan troglodytes). Mini conference of the XXVth annual meeting of the Brazilian Society of Psychology. Universidade de Sao Paulo, Ribeirao Preto, SP, Brazil, October 25-29, 1995. Program p.42.

Tonooka, R. (1995): Hand preferences during tool-using in chimpanzees. Invited lecture of the XIIIth annual meeting of the Brazilian Society of Ethology. Universidade de Sao Paulo, Pirassununga, SP, Brazil, November 2-4, 1995.

Matsuzawa, T. (1994) Field experiments on use of stone tools by chimpanzees in the wild. In Wrangham, R. et al.(eds.), Chimpanzee Cultures. Harvard Univ. Press, 351-370.

Tomonaga, M. (1994): How laboratory-raised Japanese monkeys (Macaca fuscata) perceive rotated photographs of monkeys: Evidence for an inversion effect in face perception. Primates, 35: 155-165.　

Tomonaga, M. (1995): Transfer of odd-item search performance in a chimpanzee (Pan troglodytes). Percept. Motor Skills, 80: 35-42.

Tomonaga, M. (1995): Visual search by chimpanzees (Pan): Assessment of controlling relations. J. Exp. Anal. Behav., 63: 175-186.

Tonooka, R. & Matsuzawa, T. (1995) Hand preferences of captive chimpanzees (Pan troglodytes) in simple reaching for food. Int. J. Primatol., 16: 17-35.

Fujita, K.(1994): Review of K.R.Gobson & T.Ingold (Eds.), "Tools, language and cognition in human evolution." Cambridge University Press. (1993). Primates, 35(4): 523-525.

Fujita, K.(1994): Perception of a geometric illusion by chimpanzes and rhesus macaques. XVth Congress of the International Primatological Society, Abstract: 71.

Fujita, K.(1995): Perception of a geometric illusions by pigeons, monkeys, and apes. The 18th International Symposium of Taniguchi Foundation, Division of Brain Sciences, "Emotion, memory and behavior - study of human and nonhuman primates -". Abstract: 18-19.

Kanazawa, S. (1994): Recognition of facial expressions in humans and a Japanese monkey, 15th Congress of the International Primatological Society, Kuta-Bali, Indonesia, August 1994

Matsuzawa, T. (1994): Chimpanzee intelligence in nature and in captivity: Isomorphism of symbol-use and tool-use. Paper presented at Wenner-Gren Foundation Symposium No. 118 "The Great Apes Revisited", held at Cabo San Lucas, Mexico, Nov. 12-19.

Tanaka, M. (1994): Recongnition of inter-object relationships in chimpanzees. The XVth International Congress of Primatology. Abstracts pp. 420.

Fujita, K. (1993): Role of some physical characteristics in species recognition by pigtail monkeys. Primates, 34(2):133-140.

Fujita, K. (1993): Development of visual preference for closely related species by infant and juvenile macaques with restricted social experience. Primates, 34(2), 141-150.

Tomonaga, M. (1993a): Facilitatory and inhibitory effects of blocked-trial fixation of the target location on a chimpanzee's (Pan troglodytes) visual search performance. Primates, 34: 161-168.

Tomonaga, M. (1993b): A search for search asymmetry in chimpanzees (Pan troglodytes). Perceptual and Motor Skills, 76: 1287-1295.