Bonobos Exhibit Delayed Development of Social Behavior and Cognition Relative to Chimpanzees

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Bonobos Exhibit Delayed Development of Social Behavior and Cognition Relative to Chimpanzees

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Title: Bonobos Exhibit Delayed Development of Social Behavior and Cognition Relative to Chimpanzees
Author: Wobber, Victoria Elizabeth; Wrangham, Richard W.; Hare, Brian

Note: Order does not necessarily reflect citation order of authors.

Citation: Wobber, Victoria, Richard Wrangham, and Brain Hare. 2010. Bonobos exhibit delayed development of social behavior and cognition relative to chimpanzees. Current Biology 20(3): 226-230.
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Abstract: Phenotypic changes between species can occur when evolution shapes development. Here, we tested whether differences in the social behavior and cognition of bonobos and chimpanzees derive from shifts in their ontogeny, looking at behaviors pertaining to feeding competition in particular. We found that as chimpanzees (n = 30) reached adulthood they became increasingly intolerant of sharing food, whereas as adults, bonobos (n = 24) maintained high, juvenile levels of food-related tolerance. We also investigated the ontogeny of inhibition during feeding competition. In two different tests, we found that bonobos (n = 30) exhibited developmental delays relative to chimpanzees (n = 29) in the acquisition of social inhibition, with these differences resulting in less skill among adult bonobos. The results suggest that these social and cognitive differences between two closely related species result from evolutionary changes in brain development.
Published Version: doi:10.1016/j.cub.2009.11.070
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:5270286

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  • FAS Scholarly Articles [7495]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

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