PSYC 327 Lecture Notes - Lecture 26: Group Selection, Striatum
28 Sep 2016
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Document Summary
Women subjects played prisoner"s dilemma over network with another subject. More activity in our brain when the lady cooperated. Brain activity in areas when we punish those who fail to act cooperatively. How social norms evolved before legal codes came in place. One proximate mechanism involved in maintaining punishments lies in the pleasure that we derive from enforcing social norms. Player a and b have both 10 monetary units. If player a gives them to player b he is been told that the investor will quadruple the gift, so. B will have 50, and the two can split it and get 25 each. Oxytocin levels in the plasma of b raised if a intentionally gave up the 10. Oxytocin levels were less if b was told that a gave the 10 due to chance. If b does not give some units back, a has 1 min to punish b by revoking some of the initial units given to b.
