Card 21 / 26: According to the social brain hypothesis (e.g. Dunbar), which of the following is FALSE?
A) Relative size of an individual person's neo-cortex is associated with how sociable he or she is.
B) Among primates, a species' average relative neo-cortex is associated with average size of groups in which the species tends to live.
C) The "natural" human group size is estimated to be approximately 150
D) Group living acted as a selective pressure for larger neo-cortex size.

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