In a ______________ study both the participants and the experimenter are prevented from knowing who is in which experimental (or control) group.
a.) dually unaware
b.) negative bidirectional
c.) double-blind
d.) reciprocally shielded
Ans: c.) double-blind
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The deviation IQ became necessary because
a. standard deviations for IQ's were the same across age groups. b. IQ's at one age level did not compare to IQ's at another age level in terms of percentiles. c. the IQ was difficult to calculate. d. the IQ was a cumbersome concept.
Changes in the _____ of the brain in adolescents may help explain the increase in risk-taking behavior in that group
a. somatosensory cortex b. occipital lobe c. prefrontal cortex d. temporal lobe
The average American adult needs ____ hours of sleep a night, and actually averages about ____ hours
a. ?six; five b. ?seven; six c. ?eight; seven d. ?nine; eight
A concern with one's self-image and achieving personal goals is most important for people in _____ cultures
Fill in the blank with correct word