A major limitation of correlational studies is that
A) researchers cannot study how conditions of interest currently exist.
B) researchers cannot infer cause and effect.
C) there is no way to measure the strength of a positive relationship between variables.
D) negative relationships between variables cannot be measured.
B
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If early maturation tends to be positive for boys, for girls, the effects are more likely
a. negative. b. positive. c. mixed. d. uneventful.
Within the quartile system, the 2nd quartile is the
a. 20th percentile. b. 50th percentile. c. 75th percentile. d. 80th percentile.
One of the difficulties with interpreting group-differences in intelligence, is that these studies are almost all
A) experimental. B) correlational. C) biased. D) unfalsifiable.
Regarding women and persons of color in the field of psychology, which of the following statements is FALSE?
a. By 2000, over 70 percent of all undergraduate and graduate degrees in psychology have been awarded to women. b. By 2000, one quarter of all undergraduate degrees and sixteen percent of doctorates in psychology were awarded to persons of color. c. In 1920, Francis Cecil Sumner became the first African-American to earn a doctoral degree in psychology. d. Margaret Washburn became the first African-American female to be awarded a Ph.D. in 1933.