Which of the following surveys is more likely than the others to generate self-selection error?
a. a mail-in survey of retirement community members about the privatization of Medicare
b. a phone survey of randomly selected voters about the job performance of local council members
c. a yes-or-no phone survey that asks, "Will you vote in the upcoming presidential election?"
d. a door-to-door survey about home energy use
Answer: a
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In the Graziano and Mooney (1982) study of children's fears, the laboratory setting was both (1) designed to reduce the effect of extraneous variables, and (2) made to look like a living room. What was the purpose of preparing the lab in this way?
A) to decrease both internal and external validity B) to increase both internal and external validity C) to decrease external and increase internal validity D) to reduce experimental variance
In the absence of the president of the Senate, the Senate is presided over by
A. the president pro tempore of the Senate. B. the Senate majority leader. C. the Senate majority whip. D. the Vice President of the United States. E. the Speaker of the House.
Members of Congress earn an annual salary of more than $150,000
Indicate whether the statement is true or false
Devolution involves delegating power and programs from the federal to state and local governments
a. True b. False Indicate whether the statement is true or false