If researchers want to generalize the results, they observe in a sample to those in the target population, then they need to make certain that the sample is ______ the target population.
A. distinguished from
B. removed from
C. the same size as
D. representative of
Answer: D
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If there is greater concordance (agreement) in criminal behavior between monozygotic twins, who fully share their genetic code, than dizygotic twins, who share only half of their genetic code, what might we conclude?
a. Aggressiveness is due to evolution. b. Aggressiveness is related to genetics. c. Interpreting social cues as aggressive is passed from one generation to the next. d. Identical twins are more likely to be rewarded for acting aggressively.
In general, gender roles
a. are more differentiated during adolescence than they are among newlyweds. b. become more traditional and differentiated in a married couple following the birth of a child. c. tend to remain constant across the adult years. d. are more pronounced for couples when both partners are working.
Lewin's law of group change argues that
a. it is usually easier to change individuals formed into a group than to change any one of them separately. b. once an individual identifies with the group, he or she will not change unless the group changes. c. leaders are the ones who are most able to change the attitudes and opinions of group members. d. behavior is a function of the person and the environment. e. when people in groups change, the change tends to be permanent rather than temporary.
How do opiate drugs such as heroin and morphine exert their effects?
A. by binding to specific receptors in the brain B. by blocking activity of pain receptors in the skin C. by altering the pattern of blood flow to the brain D. by blocking reuptake of dopamine into presynaptic neurons