Mayors are elected either from among the members of a city council or by the voters directly

A double blind study is not possible when

a. an experiment lacks experimental realism. b. the possibility of the Hawthorne effect exists. c. the researcher uses a cover story. d. the research involves assessing behaviors of men versus women.

Which of the following international situational factors since World War II have strengthened presidential dominance of foreign policy?

a. The Cold War muting foreign policy debate b. Increasing congressional deference to the president c. The President being able to react immediately to emergencies d. As the most admired person in America, an assumption that "the president knows best" e. All of the above are true.