The phrenologist’s guide to ecological competence

Since Darwin, scientists have been theorizing as to why there is variation in brain size between species and individuals. Does a larger brain, in say humans, indicate advanced cognitive abilities and complex language processing? Or is a smaller brain, such as the Olive-backed thrush’s, adapted to weigh less to accommodate lengthy flights?   In psychology, the field of phrenology has generally been dissolved, and with it, the idea that...

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