Approximately how many hours per day is the average preschool child exposed to screen time, such as watching television or using computers?
A. 10
B. 7
C. 4
D. 1
Answer: C
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Tess agrees to sleep in an artificial setting for three nights so that researchers can obtain information about her brain and muscle activity during sleep. She is taking part in a research method called _________
a. a single-blind study b. a double-blind study c. naturalistic observation d. laboratory observation
Gina jumps with fear as she feels a hand on her shoulder while walking on a deserted path across campus. Her fear evaporates when she hears her boyfriend's voice saying, "What are you doing out so late, Gina?" What brain structure played a key role when Gina's fear evaporated?
a. medulla b. hippocampus c. cerebral cortex d. amygdala
Researchers studying the effectiveness of a diet on heart disease divided the study's participants into two groups-those with Type A personalities and those with Type B personalities. Which scale of measurement best characterizes these personality variables?
A. a nominal scale B. an interval scale C. a ratio scale D. an ordinal scale
According to Sigmund Freud, the ________ is the moral element of the personality that children form when they identify with their parents and internalize their standards of right and wrong.
A. id B. archetype C. superego D. ego