The political scientist Robert Axelrod once held a computer tournament designed to determine the most successful strategy for approaching the prisoner's dilemma (the strategy that would win out most often on a sustained basis). What he found was that the most successful strategy was loosely based on a pattern of ____
a. cooperating first and then shifting into competing
b. constant cooperation
c. reciprocity
d. competing first and then shifting into cooperating
C
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You look at the moon through a rolled-up paper tube. It will
a. look like it has disappeared. b. appear to expand. c. appear to shrink. d. show no change in its perceived size from looking at it without the paper tube.
The concept of mental age in intelligence testing
a. is now calculated with separate norms for girls and boys. b. has been integrated with the concept of mental stability. c. has been replaced by the concept of chronological age. d. has been replaced by a calculation of relative standing in norms for the child's age group.
What is the relationship between testosterone and aggression?
A. Testosterone always causes aggression. B. High testosterone levels are only the result of aggressive acts already committed. C. There is a complex relationship between testosterone and aggression. D. Only extremely violent acts, such as murder, increase testosterone levels.
A person who is physiologically dependent on a drug will experience
A. tolerance to the effects of the drug. B. withdrawal symptoms if the drug is withdrawn. C. psychological craving D. all of these are correct