Joe has collected data on the number of hours ten-year-olds spend watching television each week. He tells you that the distribution of scores followed a truly normal curve. Which of the following is suggested by Joe's statement?
a. ?Fifty percent of the scores fall below the mean.
b. ?The mean, median, and mode are all different.
c. ?Sixty percent of the scores fall within one standard deviation above and below the mean.
d. ?Ten percent of the scores fall two standard deviations above the mean.
ANSWER:
a
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Molly has just entered the stage of formal operational thought. Something she can do now that she could not do before is to
a. engage in trial-and-error problem-solving. b. mentally classify objects in her head. c. think symbolically. d. deal effectively with purely hypothetical situations.
Individuals with trisomy 21 who live beyond the age of forty tend to develop the abnormal brain cells and behavioral symptoms associated with
a. sex chromosome syndrome. c. phenylketonuria. b. Alzheimer's disease. d. Down syndrome.
What is the term that is used to describe a person's overall sense of worth and well-being?
a. self-concept b. self-esteem c. self-evidence d. self-comparison
In shaping our personalities, Freud stressed the role of
a. self-actualization. b. conditioned responses. c. rewards and punishments. d. unconscious conflicts.