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

Question

Quizplus · Accepted Answer

The researcher can make causal statements about caffeine if it's manipulated, but not about gender, which is a non-manipulable variable. The factorial design also allows for better generalizability than a simple experiment.

A Researcher Wants to Do a 2 (Female/male) X 2