-
[文献書誌] Hirata, S.: "Use of leaves as cushions to s・t on wet ground by wild Yrimpartees." American J.of Primatology. 44. 215-220 (1998)
-
[文献書誌] Tomonaga, M.: "Perception of shape from shading in chimpanzees(Pan trogodyted)and humans(Homo Sepience)." Animal Cognition. 1. 25-35 (1998)
-
[文献書誌] Tomonaga, M.: "Visual texture segregation by the chimpanzee(Pan troglodytes)." Behairioural Brain Research. (in press).
-
[文献書誌] Itakura, S.: "Use of experimentar-given cues during object choice tasks by chinpanzees(Pan troglodytes), an orangutan(Prngo pybmaeus), and human information(Homo sapience)" J.of Comparative Psyclulogy. 120. 119-126 (1998)
-
[文献書誌] Butterworth, G.: "Development of precision grip in chimpanzees." Developmental Science. 1. 39-43 (1998)
-
[文献書誌] Ueno, Y.: "Spontanecus tool use by ton Kean macaque(Macaca ton Keana)." Folia primatologica. 69. 318-324 (1998)
-
[文献書誌] Nowell, A.: "The Achaeology of Mind" Cambridge University Press (in press),
-
[文献書誌] Konishi, M.: "Neural mechanisms of communication" Cambridge University Press (in press),