I give a questionnaire to a group of people measuring their favorability toward nuclear power plants and then I send these people educational pamphlets informing them about nuclear power. Finally I again give them the original questionnaire to see if their favorability has changed. A possible threat to internal validity in this design is
A) mortality.
B) testing.
C) selection.
D) history.
B
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Which of the following changes in middle school goes against normal adolescent development?
A. increased autonomy B. increased peer socialization C. increased school activities D. increased teacher control
Dr. Jones systematically varies the temperature in the laboratory (70, 80, and 90 degrees Fahrenheit) while holding other variables constant, and observes that the participants' activity level decreases as the temperature increases. This illustrates ____
a. a non-causal relationship between temperature and activity level b. a causal relationship between temperature and activity level c. no relationship between temperature and activity level d. a nonsystematic relationship between temperature and activity level
We understand that when the power of a test is reduced, we are less likely to obtain a______, even if the relationship exists.
A. causation B. effect C. significant relationship D. regression
_________ is a person's set of beliefs about mental activities
A) Rote memorization B) Conceptual organization C) Elaboration D) Theory of mind