A Mind for Sociability

Humans are highly social, but we don’t get pally with just anybody. Before forming relationships with other people, we normally size them up to see how trustworthy they are. A new study suggests that this behavior stems from an evolutionary reorganization in a part of the brain responsible for detecting other people’s emotions.

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A comparative volumetric analysis of the amygdaloid complex and basolateral division in the human and ape brain
American Journal of Physical Anthropology, Published Online: 27 Jul 2007

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