During which age period has research found the lowest average levels of life-satisfaction?

a. 15–20 years
b. 21–30 years
c. 41–50 years
d. 61–70 years

c

Psychology

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According to research cited in the text, about what percent of U. S. adolescents girls do NOT use contraception at first intercourse?

a. 15% b. 22% c. 50% d. 78%

Psychology

When a test makes systematic errors in measurement, ________ exists

a) discrimination b) unfairness c) bias d) all of the above

Psychology