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Full-Text Articles in Social and Behavioral Sciences
When Given The Opportunity, Chimpanzees Maximize Personal Gain Rather Than "Level The Playing Field", Lydia M. Hopper, Susan P. Lambeth, Steven J. Schapiro, Sarah F. Brosnan
When Given The Opportunity, Chimpanzees Maximize Personal Gain Rather Than "Level The Playing Field", Lydia M. Hopper, Susan P. Lambeth, Steven J. Schapiro, Sarah F. Brosnan
Psychology Faculty Publications
We provided chimpanzees (Pan troglodytes) with the ability to improve the quality of food rewards they received in a dyadic test of inequity.We were interested to see if this provision influenced their responses and, if so, whether it was mediated by a social partner’s outcomes. We tested eight dyads using an exchange paradigm in which, depending on the condition, the chimpanzees were rewarded with either high-value (a grape) or low-value (a piece of celery) food rewards for each completed exchange. We included four conditions. In the first, “Different” condition, the subject received different, less-preferred, rewards than their partner for each …
Dissecting The Mechanisms Of Squirrel Monkey (Saimiri Boliviensis) Social Learning, Lydia M. Hopper, A. N. Holmes, Lawrence E. Williams, Sarah F. Brosnan
Dissecting The Mechanisms Of Squirrel Monkey (Saimiri Boliviensis) Social Learning, Lydia M. Hopper, A. N. Holmes, Lawrence E. Williams, Sarah F. Brosnan
Psychology Faculty Publications
Although the social learning abilities of monkeys have been well documented, this research has only focused on a few species. Furthermore, of those that also incorporated dissections of social learning mechanisms, the majority studied either capuchins (Cebus apella) or marmosets (Callithrix jacchus). To gain a broader understanding of how monkeys gain new skills, we tested squirrel monkeys (Saimiri boliviensis) which have never been studied in tests of social learning mechanisms. To determine whether S. boliviensis can socially learn, we ran “open diffusion” tests with monkeys housed in two social groups (N = 23). Over the course of 10 20-min sessions, …
When Given The Opportunity, Chimpanzees Maximize Personal Gain Rather Than “Level The Playing Field”, Lydia M. Hopper, Susan P. Lambeth, Steven J. Schapiro, Sarah F. Brosnan
When Given The Opportunity, Chimpanzees Maximize Personal Gain Rather Than “Level The Playing Field”, Lydia M. Hopper, Susan P. Lambeth, Steven J. Schapiro, Sarah F. Brosnan
Psychology Faculty Publications
We provided chimpanzees (Pan troglodytes) with the ability to improve the quality of food rewards they received in a dyadic test of inequity.We were interested to see if this provision influenced their responses and, if so, whether it was mediated by a social partner’s outcomes. We tested eight dyads using an exchange paradigm in which, depending on the condition, the chimpanzees were rewarded with either high-value (a grape) or low-value (a piece of celery) food rewards for each completed exchange. We included four conditions. In the first, “Different” condition, the subject received different, less-preferred, rewards than their partner …