The operationalization of variables in a study refers to the way the variables:
A. are measured or manipulated.
B. are immeasurable.
C. cannot be controlled.
D. have no definitive meaning.
Answer: A
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Ephraim has an above-average IQ, but has extreme difficulty in reading. Ephraim most likely
A) has mild mental retardation. B) has a learning disability. C) has a hearing impairment. D) is an underachiever.
A psychological test is said to have content validity if:
a. the items in the test broadly represent the trait in question. b. its results are comparable to established standards of performance. c. it produces the same results from one time to the next. d. it predicts other measures of the personality trait in question.
Your friend is cynical, mistrustful, and perceives other peoples' hostilities as aimed at him. Which description most likely fits your friend?
a) Type A with low risk of heart disease b) Type B with low risk of heart disease c) Type B with high risk of heart disease d) Type A with high risk of heart disease
A two-tailed test is chosen over a one-tailed test
a. in most studies. b. when a researcher does not have a good idea of where the sample mean will fall. c. when the researcher knows a sample mean will fall in one of the tails. d. when a researcher has a clear idea of the tail in which the sample mean will fall.