Chimpanzee (Pan troglodytes) anticipation of food return: coping with waiting time in an exchange task

• Published in: Journal of comparative psychology (1983) Vol. 121; no. 2; p. 145
• Main Authors: Dufour, V, Pelé, M, Sterck, E H M, Thierry, B
• Format: Journal Article
• Language: English
• Published: United States 01.05.2007
• Subjects: Altruism; Animals; Appetitive Behavior; Female; Humans; Male; Motivation; Pan troglodytes - psychology; Reinforcement Schedule; Reward; Time Perception

Despite controversial expectations that animals achieve reciprocal altruism, it is unclear if nonhuman species possess the necessary cognitive abilities. For reciprocal altruism, individuals must anticipate the loss of a commodity and accept a delay before some return. The authors investigated the a...