What allows researchers to generalize findings from the sample of subjects in a
particular experiment to the population in which the researcher is interested?
(a) random assignment of subjects to groups
(b) random sampling of subjects
(c) assigning subjects to groups in turn, so that the first subject who shows up
is put in one group, the second into the other, etc.
(d) sampling of situations
B
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Suppose that you are a ninth grade teacher, and you are trying to get your students to conserve more water and energy in their daily lives. Which of the following approaches is likely to be most successful?
a. Educate them about the need for conservation. b. Make use of prompts, or reminders, at times when they tend to be wasteful. c. Tell them that you conserve energy and water. d. Have them make public commitments to their peers that they will be less wasteful.
The fetal stage of prenatal development lasts from
a. conception to week two. b. conception to week eight. c. implantation to week eight. d. week nine through delivery. e. week twelve through delivery.
In general, gay and lesbian couples
a. have less satisfying relationships than married heterosexuals. b. assign traditional roles of "wife" to one partner and the role of "husband" to the other. c. tend to have more egalitarian relationships than married heterosexuals. d. follow a very different pattern of stages of relationship development than heterosexual couples.
Morphine, heroin, and codeine are effective because they imitate the action of our natural ____
a. ?excitatory neurotransmitters b. ?tryptamines c. ?endorphins d. ?catecholamines