Comparing brains

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Science  13 Jul 1990:
Vol. 249, Issue 4965, pp. 140-146
DOI: 10.1126/science.2196673


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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