Human Evolution

, 4:97 | Cite as

Speciation and the evolution of behaviour in prosimians

  • G. A. Doyle


A mechanism is suggested, based on a biphasic approach-withdrawal theory proposed byT. C. Schneirla, to account for how behaviours may be selected by environmental forces for transmission over generations. The basic postulates of Schneirla's theory are presented followed by an examination of some aspects of lorisid behaviour in the light of this theory.

Key words

approach-withdrawal theory lorisid behaviour 


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Copyright information

© Editrice II Sedicesimo 1989

Authors and Affiliations

  • G. A. Doyle
    • 1
  1. 1.Primate Behaviour Research GroupUniversity of the WitwatersrandJohannesburgSouth Africa

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