In longitudinal follow-ups of thousands of births, babies born 1 to 2 weeks early ________.
A. showed lower reading and math scores in third grade than children who experienced a full-length prenatal period
B. had higher rates of illness than children who were born 4 to 6 weeks early
C. had high rates of cognitive problems in infancy but required fewer medical procedures than other children
D. showed some differences that were fully explainable by differences in SES and maternal age
Answer: A
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The purpose of random assignment of subjects to conditions is
a. to eliminate confounding of subject-related variables b. to make groups equal c. to permit the use of statistics d. Both a and c are true.
Manic episodes alternate with depressive episodes in the disorder called
A. bipolar I disorder. B. major depressive disorder. C. complicated grief. D. cyclothymia.
____________________ theory suggests that parents in stepfamilies are less likely to support their stepchildren because they want their own genes to flourish and have little stake in those not genetically related to themselves
Fill in the blank(s) with correct word
What may account for the widespread use of punishment in the "real world?"
(a) its permanence (b) its immediate effect is negatively reinforcing to the person doing the punishing (c) it has relatively unimportant negative side effects (d) so many people know and agree with Skinner's work