Regression toward the mean refers to the fact that
A. mean scores of pretest and posttest measures will be the same after manipulation.
B. extreme scores tend to change toward the less extreme mean.
C. statistical regression results from changes that occur systematically over time.
D. participants should be selected based on extreme scores taken at one time.
Answer: B
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Two-month-old Joanne is lying quietly with her eyes wide open and appears very interested in a toy dangling in front of her face. Joanne is exhibiting a. alert inactivity
b. crying. c. waking activity. d. non-REM sleep.
Systematic desensitization is a type of ________ that is sometimes used to help adults overcome phobias
a. positive reinforcement b. intermittent reinforcement c. counterconditioning d. shaping.
The mode is the appropriate measure of central tendency when the scale of measurement is
a. nominal. c. interval. b. ordinal. d. ratio.
Felisha can recall with great detail the day of her wedding and all that occurred. What might psychologists say about these particular flashbulb memories?
a. The memories were likely enhanced in part by the hormones released during emotional moments. b. The memories should last up to 15–20 years. c. The memories are unusually accurate. d. The memories are stored as procedural memories.