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Science 13 July 1990:
Vol. 249. no. 4965, pp. 140 - 146
DOI: 10.1126/science.2196673
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Articles

Science, Vol 249, Issue 4965, 140-146
Copyright © 1990 by American Association for the Advancement of Science

articles

Comparing brains

PH Harvey and Krebs JR

Department of Zoology, University of Oxford, United Kingdom.

Some animals have larger brains than others, but it is not yet known why. Species differences in life-style, including dietary habits and patterns of development of the young, are associated with variation in brain weight, independently of the effects of body weight and evolutionary history. Taken together with behavioral and neuroanatomical analyses, these studies begin to suggest the evolutionary pressures that favor different sized brains and brain components.


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