Great ape origins of personality maturation and sex differences: a study of orangutans and chimpanzees.

  title={Great ape origins of personality maturation and sex differences: a study of orangutans and chimpanzees.},
  author={Alexander Weiss and James E. King},
  journal={Journal of personality and social psychology},
  volume={108 4},
  • A. WeissJ. King
  • Published 1 April 2015
  • Psychology, Biology
  • Journal of personality and social psychology
Human personality development evinces increased emotional stability, prosocial tendencies, and responsibility. One hypothesis offered to explain this pattern is Social-Investment Theory, which posits that culturally defined social roles, including marriage and employment, are responsible for the increased maturity. Alternatively, Five-Factor Theory emphasizes the role of biological factors, such as those governing physical development, which may predate the emergence of humans. Five-Factor… 

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