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Arboreal clambering and the evolution of self-conception
1Laboratory of Comparative Behavioral Biology, New Iberia Research Center, University of Southwestern Louisiana 70560, USA.
The Quarterly Review of Biology
|December 1, 1995
Summary
A new psychology of self-conception likely evolved in ape-human ancestors. This capacity helped large, arboreal apes navigate fragile forest habitats, addressing limitations in current primate intelligence models.
Area of Science:
- Evolutionary Psychology
- Primate Cognition
- Paleoanthropology
Background:
- The evolution of primate intelligence lacks models explaining the restricted emergence of self-conception.
- Self-conception, the ability to recognize oneself, is a complex cognitive trait.
Purpose of the Study:
- To propose a novel evolutionary model for the development of self-conception in the great ape/human lineage.
- To examine existing theories of primate intelligence evolution and their explanatory gaps regarding self-conception.
Main Methods:
- Review and critique of current models of primate intelligence evolution.
- Development of a new hypothesis linking arboreal navigation challenges to self-conception evolution.
- Formulation of testable predictions based on the proposed model.
Main Results:
- Existing models inadequately explain the evolution and distribution of self-conception.
- A new psychological mechanism for self-conception is proposed for Miocene ape-human ancestors.
- The proposed mechanism is linked to the ecological pressures faced by large, arboreal apes.
Conclusions:
- Self-conception likely evolved as an adaptation for navigating complex, arboreal environments.
- This evolutionary psychology perspective offers a novel explanation for a key cognitive development in human evolution.
- Further research and testing of derived predictions are warranted.
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