In Freud's view, human nature is not always rational, and behavior may be driven by motives that are not in conscious awareness

A researcher is interested in learning how heart rate increases during moments of fear. Which measurement would be appropriate for this study?

a) Psychobiological b) Direct observation c) Objective d) Projective

The key to success in the "prisoner's dilemma" game is to

a. always be competitive. b. withdraw when one's partner chooses a competitive response. c. trust one's partner. d. respond randomly.