The single-blind procedure involves
A) having the experimenter aware of all of the hypotheses.
B) having all participants blind to only one condition.
C) having only one participant blind to the conditions.
D) having the experimenter's assistant, who actually tests each participant, unaware of the hypotheses being tested or the condition under which each participant is tested.
Answer: D
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Which of the following is a disadvantage of surveying the public using traditional telephone polls?
a. Many people do not have landlines. b. Pollsters are no longer exempt from federal do-not-call lists. c. Pollsters are no longer exempt from state do-not-call lists. d. Polling is a form of constitutionally protected speech.
World population is growing mainly because
a. people are having more children. b. immigration is at such high levels. c. mortality has decreased so dramatically. d. agricultural yields have grown so exponentially over the last decades.
After 1937, Supreme Court decisions approving New Deal legislation favored _____________
a. state-centered federalism b. nation-centered federalism c. both nation-centered and state-centered federalism d. hybrid federalism
Although the federal government is supreme, the relationship between it and states is characterized by ______.
A. federal permissiveness B. constant conflict C. rapid changes D. overall flexibility