Assume that Latané and Darley want to demonstrate the external validity of their 1968 experiment on bystander intervention. To do this, they conduct a study in which participants solve crossword puzzles alone, or in large or small groups
While the participants are working on the puzzles, they overhear a woman fall from a ladder and cry out, "Oh, my leg! I can't move it!" The researchers then observe and record the number of participants who attempt to help. The study described here represents a(n) ________ of the original "seizure" study.
a. manipulation check
b. replication
c. needless duplication
d. encore
Answer: B
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Which of the following is the most important in the physiological control of sleep?
a. brain circuits and brain chemicals b. the somatic nervous system c. external markers for sleep and wakefulness d. sleep-promoting substances in the blood stream
Regan and Fazio (1977) studied attitude-behavior consistency at Cornell University during a severe housing shortage. They found that the students most willing to sign and distribute petitions about the housing crisis were
a. those who were low in self-esteem b. those who had been assigned to live in temporary housing c. those who had thought most about the issue d. those whose attitudes were the least certain