In comparison with purely between-subjects experimental designs, one drawback of purely within-subjects experimental designs is that:
A) they usually do not do as good a job of controlling for individual differences
B) they require the use of matching, which is very difficult to perform effectively
C) they open the door to problems such as sequence effects or carryover effects
D) they are usually more costly and time-consuming than between-subjects designs
C
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Which of the following is a factor that determines whether or not a behavior or feeling is evidence of a psychological disorder?
a. Whether the behavior or feeling is pleasant. b. Whether the behavior or feeling is appropriate to the situation. c. Whether or not the behavior is legal. d. Whether the behavior or feeling is acceptable to family members.
________ borrow from well-understood models by suggesting that the system to be explained behaves in a fashion similar to that described by a well-understood model.
A. Descriptive theories B. Analogical theories C. Fundamental theories D. Functional theories
Julia has just started taking dancing lessons and is highly motivated to do well. She is most likely to engage in:
a. downward comparison b. upward comparison c. comparison to someone else who has just started lessons d. a and c
A criterion-related validity of 0.50 indicates that approximately ______ percent of
the variability of performance can be accounted for by the test scores. a) 99.5 b) 50 c) 25 d) 10