During sleep, when is brain activity highest and muscle activity least?
a. Brain activity and muscle activity are least during REM.
b. Brain activity and muscle activity are least during Stage 4 sleep.
c. Brain activity is greatest during REM and muscle activity is least during Stage 4 sleep.
d. Brain activity is greatest during Stage 4 sleep and muscle activity is least during REM.
a
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A pigeon pecks on a sign and is given food. The food is a:
A. secondary consequence B. primary stimulus C. primary reinforcer D. secondary reinforcer
When Terman compared the most successful gifted subjects to the least successful, the two groups differed primarily in
a. persistence and motivation. b. adult intelligence scores. c. special talents for music and art. d. leadership abilities.
Twelve-year-old Heather has a smaller head circumference and less gray matter thickness than typical children of her same age, sex, and size. It is most likely that a. Heather's mother used alcohol and other drugs during her pregnancy
b. Heather's mother has PKU. c. Heather has PKU. d. Heather has fragile X syndrome.
One reason that psychologists abandoned the view of instinct as a universal explanation of human behavior is that
a. Freud's popular theory rejected the importance of instinct. b. there had been little success in generating a list of human instincts. c. the behaviorist influence began to diminish in the 1920s. d. cross-cultural studies found enormous behavioral variation.