The principle that performance on tasks is best when the arousal level is appropriate to the difficulty of the task is known as _____
a) the Yerkes-Dodson law.
b) the drive-reduction theory.
c) the Lazarus theory.
d) the James-Lange theory.
Answer: a
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What procedure do psychologists recommend to reduce the probability that a witness will identify an incorrect person in a police lineup? a. Encourage the witness to identify someone
b. Use a supervising officer who does not know which person the police suspect. c. Let the witness examine all suspects repeatedly before making a choice. d. Identify to the witness the person the police most strongly suspect.
Rich's first psychology exam score is +1 standard deviation from the mean in a normal distribution. The test has a mean of 60 and a standard deviation of 6 . Rich's percentile rank would be approximately a. 70%
b. 84%. c. 66%. d. cannot determine from the information given
Which of the following data would be most appropriate to report mean?
A. reaction times in a task B. weight of adult men C. political affiliation D. class rank (freshmen, sophomore, junior, and senior)
Sheldon proudly proclaims himself to be a man of science, who is guided by facts. Would Sheldon support Freud's theories on human development?
A. Yes, they are easily observed. B. No, they are not sequential. C. Yes, they are highly rational. D. No, they are too ambiguous.