According to developmental psychologist K. Warner Schaie, numeric ability tends to increase until the __________, and then stays steady
a) mid-50s, is lower at age 60
b) mid-40s, is lower at age 60
c) mid-30s, is lower at age 60
d) mid-20s, is lower at age 60
Answer: b
Psychology
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The psychometric approach to quality of life measurement
a. weights different dimensions of quality of life to derive a single score. b. is applicable to social aspects of life but not health issues. c. are plagued by problems with validity. d. provides separate measures for each of the dimensions of quality of life.
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The best way to control for the placebo effect is to use:
a. counterbalancing. b. a within-subjects design. c. a double-blind procedure. d. a between-subjects design.
Psychology