Which of the following effects occurs in a complex design when the effect of one independent variable differs depending on the level of a second independent variable?
A. main effect
B. collapsed effect
C. interaction effect
D. factorial effect
C. interaction effect
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In which of these ways does a man's sexual response differ from a woman's? a. Unlike women, a man shows physiological responses during the first stage of arousal. b. On average, the plateau stage of sexual response lasts much longer in a man
c. A man's orgasm lasts about twice as long as a woman's. d. After orgasm, men have a refractory period that temporarily blocks further response.
Attention-deficit/hyperactivity disorder is characterized by a persistent pattern of difficulties that include __________.
A. negativistic, defiant, disobedient, and hostile behavior toward authority figures B. the violation of rules and a disregard for the rights of others C. excessive anxiety about separation from major attachment figures D. sustained attention and/or impulsiveness and excessive or exaggerated motor activity.
Answer the following statement(s) true (T) or false (F)
Compared to rats, birds are more likely to avoid unfamiliar foods.
Internal validity is: a. the extent to which the results of an experiment can be attributed to the manipulation of the dependent variable, rather than to some confounding variable
b. the extent to which the results of an experiment can be attributed to the manipulation of the independent variable, rather than to some confounding variable. c. the extent to which the results of an experiment can be generalized. d. both b and c