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The social intelligence hypothesis argues that competition and cooperation among individuals have shaped the evolution of cognition in animals. What do we mean by social cognition? Here we suggest that the building blocks of social cognition are a suite of skills, ordered roughly according to the cognitive demands they place upon individuals. These skills allow an animal to recognize others by various...
Previous analyses indicate that female baboons that form strong and stable social bonds reproduce more successfully than others, and that some elements of females' personalities are associated with the tendency to form close social bonds. Here we use a new method to confirm that females' personalities were stable over time, although not fixed, and that matrilineal kin had personalities that were no...
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