Test Yourself
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1. Factorial experiments
-- Choose an answer --
a. use more than one independent variable
b. use more than one dependent variable
c. test all combinations of the dependent variables
d. test each independent variable at all levels of the dependent variable
2. To have a factorial experiment, you must do all of the following EXCEPT:
-- Choose an answer --
a. randomly assign participants to group
b. use multiple dependent measures
c. have two or more independent variables
d. expose every participant in the study to at least one level of each independent variable
3. To estimate the interaction in a 2 X 2 factorial experiment, you
-- Choose an answer --
a. add the variable's simple main effects
b. subtract the overall main effects
c. average the variable's simple main effects
d. subtract the variable's simple main effects
4. If the lines in a graph cross, this indicates
-- Choose an answer --
a. two main effects and an interaction
b. two main effects and no interaction
c. an ordinal interaction
d. a disordinal interaction
5. A researcher wants to do a 2 (female/male) X 2 (no caffeine/ large amount of caffeine) study. Which of the following is true?
-- Choose an answer --
a. The researcher can't make causal statement about the effect of caffeine.
b. The researcher will have a better idea of the generalizability of the effects of caffeine that if she had done a simple experiment.
c. The researcher can't make causal statements about the effects of gender.
d. both b and c
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