About Me


I am studying the psychology of great apes, particularly attention, emotion, and cognition. I am working with all species of great apes including bonobos, chimpanzees, orangutans, gorillas, human infants, children, and adults. I am interested not only in how great apes are similar to humans but also how species are different from one another in their psychology. Not only in their appearances, bonobos, chimpanzees, orangutans, gorillas, and humans seem to differ from one another in their attention, emotion, and cognition. My current goal is to reveal such diversity of minds among us and our closest relatives. 

Non-invasive eye-tracking with an orangutan at the Leipzig zoo
After the undergraduate course at Kyoto University, Kyoto, Japan, I stayed at Inuyama, Aichi for five years to conduct my research at Primate Research Institute. I got my Master and PhD degree there, supervised by Dr. Masaki Tomonaga and Dr. Tetsuro Matsuzawa. At PRI, I worked with chimpanzees using the computerized methods such as touch-panel tasks and eye-tracking. I was especially fascinated by what is revealed by the eye movements of great apes; thus I developed an optimal setting to record their eye movements non-invasively. Now as a post-doc, I am continuing the eye-tracking studies by expanding the study species to all great apes and human infants and children at Max-Planck Institute for Evolutionary Anthropology, Leipzig, Germany (with Dr. Josep Call).



Two techniques of conducting the eye-tracking in great apes non-invasively. 


Some recent projects. (a) Spontaneous movie watching by chimpanzees, human experts and nonexperts. (b) Gaze following by bonobos, orangutans, chimpanzees, and human infants. (c) Eye contact difference between chimpanzees and bonobos. (d) Action prediction by eye movements in great apes and human infants.


Apart from work, I enjoy outdoor activities, mountain climbing, travelling and some indoor activities, making models and watching movies.

Shower climbing in Japan