REM sleep normally occurs for the first time ________
a. within 10 minutes of falling asleep.
b. after about an hour of sleep.
c. about 70 to 90 minutes after sleep onset.
d. after about 3–4 hours of sleep.
Answer: c
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Contingency management involves changing the relationship between
a. one behavior and another. b. a behavior and the stimulus that triggers it. c. a behavior and its consequences. d. what one thinks and how one acts.
Compared to other juries, juries that are "death qualified" tend to ____
a. over-represent the poor b. over-represent women c. remember more of the evidence that is presented in a trial d. be more likely to judge defendants guilty rather than innocent
A researcher would like to select a sample of 50 people so that five different age groups are equally represented in the sample. Assuming that the researcher does not know the entire list of people in the population, which sampling technique should be used?
a. quota sampling b. stratified random sampling c. proportionate stratified random sampling d. cluster sampling
All of the following are common behaviors of children ages 7 to 12 except
a. they are highly involved in sex play (for example, playing house; doctors; moms/dads) b. they exhibit shyness and modesty about their own nudity. c. they use language to express sexual knowledge and ask questions about it. d. they are interested in sexual contents and issues (looking at nude pictures; sex play).