It seems to Joanna that every time her son Daniel eats foods containing chemical dyes or additives, he gets into trouble or acts irrationally. When Joanna mentions this to her pediatrician, the doctor tells Joanna that Daniel's behavior fits the _______ model of abnormality.

Probably the single most important aspect of culture to human survival is its ability to

a) organize society to defend against danger. b) instill the ability to create art. c) define morality. d) transmit knowledge from generation to generation.

If players can communicate or if iterated prisoner's dilemma games are used, then

players are (a) more likely to cooperate than in a prisoner's dilemma played just once (b) compete because of pure incentive considerations (PICs) (c) likely to suffer from competition burnout and quit the game (d) contribute to the tragedy of the commons