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Amazon Music Stream millions of songs. These models fit smooth functions to non-linear data and also allow the inclusion of random effects for repeated measures on the same subject. Physical contact with the mother characterizes most of the first two years of life [9]. East Dane Designer Men's Fashion. In East African chimpanzees Pan troglodytes schweinfurthiithere are distinct sex differences in sociality, such that adult females are significantly less gregarious than adult males, spending much of their time accompanied only by their dependent offspring Gombe: Proc Natl Acad Sci

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Chimpanzees and humans have many genetic similarities [3] as well as similarities in physiology and growth [4].

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Sex Differences in Wild Chimpanzee Behavior Emerge during Infancy

These differences in infancy then persist through the juvenile and adolescent stages of development. Smith BH Life history and the evolution of human maturation. These results demonstrate early sex differentiation that may reflect adult reproductive strategies. Since reading the book, I've had the unexpected side-effect of dealing far more gracefully with people. For the analyses presented here, we focused on the following behaviors, as defined by the Gombe chimpanzee glossary the Jane Goodall Institute, unpublished records:. In sum, we have characterized the average developmental trajectories of several key behaviors in a large sample of wild chimpanzees.

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