If a researcher administered a mood scale to two preexisting groups of anxious adults, removed the TV sets from one of the groups for two months, and again administered the mood scale to both groups, the researcher would be employing
A) an ex post facto design.
B) a single-group, posttest-only design.
C) a single-group, pretest-posttest design.
D) a pretest-posttest, natural control-group design.
Answer: D
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The separation of powers in U.S. government refers to:
a. the division of governing authority between the House of Representatives and the Senate b. the division of governing authority between states and the national government c. the protections for citizens' rights found in the Bill of Rights d. the division of governing authority among the presidency, the Congress, and the Supreme Court
The "tragedy of the commons" metaphor suggests that __________.
A. national interests should be defined in zero-sum terms B. the pursuit of self-interest will result in the greatest good for the greatest number C. solutions to national problems will lead automatically to the solution of international problems D. if individuals act out of short-term self-interest, all may suffer in the long run