Chimpanzee (Pan troglodytes) anticipation of food return: coping with waiting time in an exchange task - Dufour, V; Pelé, M; Sterck, E H M; Thierry, B (Journal of comparative psychology (1983), 2007)
Keywords: Altruism; Animals; Appetitive Behavior; Female; Humans; Male; Motivation; Pan troglodytes - psychology; Reinforcement Schedule; Reward; Time Perception