Extensive testing of the effects of amphetamines has concluded that they
A. do not really improve athletic performances.
B. can improve performances by a few percentage points.
C. actually make people perform more poorly.
D. enhance total work output by 30 percent or more.
B
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What is the perception of the intensity of a sound wave called?
a. pitch b. frequency c. amplitude d. loudness
Festinger and Carlsmith (1959) showed that ______.
a. hardship influences attitudes b. the lower the justification for performing a behavior, the more favourable the attitude c. the greater the justification for performing a behavior, the more favourable the attitude d. effort justification effects generalize to weight loss
One objection to the three-box model of memory is that ________
a. short-term memory is not usually involved in the conscious processing of information. b. the brain performs many operations simultaneously. c. the sensory register is actually able to store information for 30 seconds. d. there is a limit to the capacity of long-term memory.
Which analogy is similar to synaptic pruning?
A. stocking up on one of everything to make sure you always have the proper tool B. transplanting a tree to a place where there is more sunlight C. over-growing seedlings and then weeding out ones that are not needed D. watering a flower twice a day so it does not dry out