In order to be useful, a psychological test must be reliable; that is, it must:
a. measure what it is designed to measure.
b. compare results against established standards of performance.
c. produce the same results from one time to the next.
d. predict other criteria of the trait in question.
Answer: c
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Comparison groups are used to
a) Reduce threats to internal validity and construct validity b) Confirm rival hypotheses c) Rule out treatment effects d) Reduce threats to construct validity and external validity
While Dilbert is severely intellectually disabled, he has the ability to tell you the day of the week for any future date (e.g., November 27, 2949 = Tuesday). This description indicates that Dilbert
a. has great wisdom. b. possesses superb divergent thinking skills. c. has savant syndrome. d. is about to experience a terminal drop.