In a matched-subjects design, it is best to match on variables that
A) show the smallest amount of variance in the population from which we are sampling.
B) demonstrate very small mean differences in randomly selected groups.
C) do not affect the dependent measure(s).
D) show the greatest natural variability in the population from which we are sampling.
Answer: D
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The United States compares well to other advanced developed nations in which of these?
a. life expectancy b. infant death rates c. health care costs d. access to health care
Political engagement at the local level a. is relatively impressive when compared to engagement in national political campaigns and presidentialelections
b. has dropped to an extremely low rate in recent years. c. is not as attractive as engagement in national political campaigns and presidential elections because the stakesare lower at the local level. d. has been shown to give little, if any, benefits to participants.