For optimal conditioning, the minimum delay between the CS and US should be
a. a half second to five seconds.
b. 15 to 30 seconds.
c. 40 to 50 seconds.
d. one to two minutes.
ANSWER: a
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A bonus of $100 for completing a work assignment before a deadline is an example of
a. an incentive. b. a reward. c. drive reduction. d. a motive.
Children who have problems of undercontrol of their emotions are at risk for ____
a. ulcers and other physical problems b. aggression and conflict in early childhood and beyond c. not realizing their academic potential d. not likely to have serious relationships as adults
Eric is more likely than his sister to be negatively affected by X-linked disorders because
A) males are more likely than females to inherit harmful recessive alleles. B) the Y chromosome is much longer than the X chromosome. C) the Y chromosome lacks many corresponding genes to override those carried on the X chromosome. D) his sex chromosomes match, which makes him more susceptible to disease.
According to the empathy-altruism hypothesis, pure altruism
A) will occur only when the person suffering is close to the potential helper. B) will occur only if escape from the aversive helping situation is difficult. C) will occur when empathic concern is elicited, because such concern orients a person away from his or her own welfare and toward another's welfare. D) does not really exist, because it is incompatible with evolutionary theory.