When comparing means in a two-group design, which statistical analysis is most appropriate?
a. independent-measures t test
b. repeated-measures t test
c. single-factor analysis of variance
d. chi-square test for independence
a
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What does a personality test become if someone establishes rules for administering the test and interpreting the results?
a. Projective b. Valid c. Standardized d. Psychoanalytic
According to studies of the influence of heredity and environment on personality traits, heredity appears to be responsible for what percent of the variation in many personality traits?
a. less than 10 percent b. about 25 to 50 percent c. about 75 percent d. at least 90 percent
Failure to control the bladder once the "normal" age for bladder control has been achieved is called:
a. encopresis. c. enuresis. b. urinesis. d. ontothesis.
Reading skills are acquired by some children before they enter formal school, by other children
in kindergarten and first grade, but are not achieved by some children until third and fourth grades. Acquiring reading skills is an example of a a. normative age-graded change. b. critical period. c. quantitative change. d. sensitive period.