practice-exam-28-november-2011-questions-quiz-2-version-a.doc

A the number of problems solves the difficulty of the

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A. The number of problems solves; the difficulty of the problems B. The number of problems solved; the noise level in the room C. The noise level in the room; the number of problems solved D. The noise level in the room; the difficulty of the problems 7. Counterbalancing is _________. A. Usually based on random selection of participants B. Only used when one pre-test variable needs to be controlled C. Chosen to control for such things as order and carry-over effects D. All of the above 8. Which of the following designs does an excellent job of controlling for alternate hypotheses that threaten the internal validity of an experiment? A. Post-test-only design with random assignment and non-equivalent groups B. Post-test-only control-group design with random assignment C. Pre-test/post-test control-group design with random assignment D. Both b and c are acceptable designs 9. This type of design is one where all participants participate in all experimental treatment conditions. A. Factorial design B. Repeated measures design C. Replicated design D. Pre-test-post-test control-group design 10. A factorial design is one in which ____. A. Only one independent variable is studied to determine its effect on the dependent variable B. Only two independent variables are simultaneously studied to determine their independent and interactive effects on the dependent variable C. Two or more independent variables are simultaneously studied to determine their independent and interactive effects on the dependent variable D. Two dependent variables are studied to determine their interactive effects 3 Distributing prohibited | Downloaded by Poo Pee ([email protected])
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lOMoARcPSD|1366769 11. A measurement technique is said to have " concurrent validity " if it possesses which of the following characteristics? A. It can be used to forecast a future state of the individual or object being measured. B. It agrees with other measures of the same variable. C. It accurately reflects the attributes of the concept being measured. D. It agrees with theoretical predictions about how the variable being measured is related to other variables. E. It seems comprehensive and matches the conceptual definition of the variable. 12. Which of the following statements best describes the relationship between internal validity and external validity? A. Improving one tends to improve the other. B. They are unrelated. C. Improving one tends to decrease the other. D. Internal validity is a subset of external validity. E. External validity is a subset of internal validity. 13. Giving placebos in drug experiments is necessary to A. counteract the random assignment of subjects. B. counteract the side effects of the drug. C. control for the effects of suggestion and expectation. D. keep control subjects from knowing they have been given the drug. 14. A friend states that since he has been taking vitamin C, he has not had a single cold.
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