When communication is difficult in a prisoner's dilemma game, cooperation ____
a. increases dramatically
b. increases a small amount
c. decreases a small amount
d. decreases dramatically
D
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X and Y correlate .5 . What is the coefficient of determination of this relation?
a. 0 b. .25 c. .50 d. .75
Sophie is experiencing so much guilt associated with the death of her boyfriend that it is beginning to interfere in every aspect of her life. She is probably experiencing a. a near-death experience. b. separation distress
c. normal bereavement. d. anticipatory grief.
When intelligence is assessed with culture-fair tests,
a. African-American children score higher than Caucasian children. b. IQ test scores do not predict school achievement. c. Caucasian children still earn higher scores than African-American children. d. African-American children earn equal scores as Caucasians when the test items have been translated into urban dialects.
Animal species with __________life expectancies tend to display __________ free-radical damage to DNA
A) longer; slower rates of B) shorter; slower rates of C) longer; faster rates of D) shorter; little to no