Abstract # 84:

Scheduled for Sunday, September 14, 2014 10:40 AM-10:55 AM: Session 13 (Decatur A) Oral Presentation


T. Matsuzawa
Primate Research Institute, Kyoto University, Inuyama, Aichi 484-8506, Japan
     The laboratory study named Ai project started in 1978. Ai is a name of a female chimpanzee who has her child and is living in a community of 13 chimpanzees. It aimed to know the chimpanzee mind through cognitive experiments. The field study has been done in Bossou-Nimba, Guinea, West Africa since 1986. The observation of wild chimpanzees provides us the two important information in their natural habitats: behavioral repertoire and activity budget. The two different approaches interact each other. The field data gives us the standard of keeping the captive community of chimpanzees in a healthy condition. For example, the wild chimpanzees usually feed 6 to 8 times a day. Each feeding bout lasts about 30 minutes on the average. Thus the cognitive experiments in the laboratory helps to increase the feeding opportunity. The activity budget clearly tells us the necessity of social interaction. In captivity, the chimpanzees interact each other and with humans too. The intimate relationship helps us to do the face to face test. The naturalistic approach keeps the captive chimpanzee healthy, and makes it possible for us to know the life-time cognitive development. On the other hand, the experimental manipulation can work in the field. For example, field experiment has revealed the learning process of tool use, such as manipulating stone hammer and anvil to crack open oil palm nuts in Bossou. Taken together, the holistic approach may help us to understand the mind of chimpanzees and to know the evolutionary basis of human mind.