An exploratory study of gaze-monitoring in nonhuman primates1


  • 1

    This study was supported in part by grants-in-aid from the Ministry of Education, Science, and Culture of Japan (05206109, 05710069, 06205216, 06710058, 07710071). I thank the Director, Dr. N. Herrenschmidt, Dr. J. Anderson, and the staff of the Centre de Primatologie, Université Louis-Pasteur, and the staff of Sanwa Kagaku-kenkyusyo. I also thank Martin Doherty for a careful editing of the manuscript.


Abstract: Eleven species of nonhuman primate were tested in a gaze-monitoring task to examine whether they would look where the experimenter looked or pointed. Chimpanzees and an orangutan showed higher correct-response rates than other species. A high correlation was found between correct responses on the gaze-monitoring task and the length of time that the subject continuously concentrated on the experiment.