Exam 12: Expanding the Simple Experiment: Factorial Designs

A researcher is using 48 subjects in a 4 (levels of exercise) X 3 (levels of caffeine) between subjects factorial experiment. The degrees of freedom for the exercise by caffeine interaction is

One study tried to determine whether men prefer women who are blonde or women who are brunette. The hair color of the men also was varied. The experimenter found that both light and dark-haired men prefer blonde women to brunettes, but the effect was much greater for dark-haired men than for light-haired men. These results reflect

Interactions are especially useful for demonstrating that general rules are universal.

The possibility that a main effect found in a simple experiment may interact with another variable,

A researcher is using 60 participants in a 2 (levels of exercise) X 2 (levels of caffeine) between subjects factorial experiment. The degrees of freedom for the exercise by caffeine interaction is

Adding a nonexperimental factor to a simple experiment creates a 2 X 2 study that

If, in a 2 X 2 experiment, you know that there are no main effects,then you know

Which kind of interaction may reflect a problem with your dependent variable rather than the fact that the effect of one variable is affected by the presence of a second variable?

A researcher wants to do a 2 (female/male) X 2 (no caffeine/ large amount of caffeine) study. Which of the following is true?

To have a factorial experiment, you must do all of the following EXCEPT:

To estimate the overall main effect in a 2 X 2 factorial experiment,you

Factorial experiments

An experiment is a factorial experiment if

A researcher is using 60 participants in a 2 (levels ofexercise) X 2 (levels of caffeine) between subjectsfactorial experiment. The total degrees of freedomfor the experiment is

If you have an ordinal interaction, you can be confident that your treatment has more of an effect in some conditions than in others.

The caffeine/exercise group scores higher than either than caffeine/no-exercise group or the no-caffeine/no exercise group.This could be due to:

If both simple main effects for exercise are 0 and the average of the simple main effects for caffeine is 100, there is probably

A 2 X 2 factorial experiment contains _____ simple main effects.