In a study, researchers taught 2- to 8-month-olds to pull a string to activate pleasurable sights and sounds, to which the infants responded with interest, happiness, and surprise
Then, for a short period, pulling the string no longer turned on the attractive stimuli, and the babies' emotional reactions changed to anger and sadness. Once the contingency was restored, the sad babies
A) showed renewed interest.
B) showed renewed enjoyment.
C) turned away.
D) reacted with high anxiety.
C
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There is a greater portion of motor cortex for the
a. mouth. b. hands and fingers. c. feet and toes. d. legs.
According to the text, the growing acceptance of the several biological influences on personality is
A. a reflection of the decline of psychoanalysis in academic psychology. B. partly due to a return to the notion of the blank slate. C. a reflection of behaviorism's decline in academic psychology. D. due to computer technology of the late 20th century.