Which of the following is NOT a characteristic of an experiment?
A) unbiased assignment of participants to conditions
B) two or more levels of the independent variable
C) the unbiased use of a placebo
D) the use of specific controls to decrease threats to internal validity
Answer: C
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The expansion of American power in the post–World War II world has been accompanied by an increase in the power of __________
a. Congress b. interest groups c. the FBI d. the president
What do liberals believe about human nature? a. They believe that people are inherently good and peaceful. b. They believe that people are prone to conflict and war. c. They believe that people are smart enough to recognize the problems in the world and work to solve thoseproblems
d. They believe that people should try to solve the world's problems, but they probably will not be successful.