If the correlation between the IQs of identical twins is .86, then, in any group of identical twins, what percent of the variation in the "Y" twins' IQs is accounted for by knowing the IQs of their identical siblings (the "X's")?
a. 22
b. 43
c. 74
d. 86
ANSWER: c
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Which of the following involves using a well-learned conditioned stimulus (CS) as an unconditioned stimulus (US)?
a. acquisitional training b. higher order conditioning c. shaping d. extinction
In the experiment in which college students breathed air with increased amounts of carbon dioxide through a mask, the students found it much MORE stressful if they
a. were surprised by the trials that contained the increased amount of carbon dioxide. b. were told which trial would contain an increased amount of carbon dioxide. c. could control the amount of carbon dioxide entering the mask. d. experienced repeated trials of increased amounts of carbon dioxide that were each announced before occurring.
The social learning theorist's equivalent to the Freudian concept of superego is
a. self-reinforcement. b. drive-reduction. c. habit. d. self-image.
After identifying an appropriate journal to which to submit a paper, the researcher should
a. select two alternative publication sources b. contact the journal editor c. examine recent issues of the journal d. set the date for publication