What was the effect of reducing the drinking age from 21 to 18 on alcohol-related highway accidents?
a) lowered the rate of accidents
b) increased the rate of accidents
c) had no effect on the accident rate
d) an initial increase in accidents was followed by a decrease
Question 2
A mental health professional was asked to comment on the Consumer Reports survey of satisfaction with psychotherapy. Which of the following might be the most important criticism of the survey?
a) Open-ended questions made it difficult to draw conclusions.
b) Only a small proportion of the magazine's subscribers returned the survey.
c) Most of the respondents were hospitalized at the time they completed
the survey.
d) The surveys had to be completed by the therapist who was treating the respondent.
Effect of predator on prey populations.
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