Testing the combined effects of the independent variables is a unique feature of ______.
A) quasi-experimental studies
B) factorial designs
C) experimental studies
D) placebo studies

Question

Quizplus · Accepted Answer

Factorial designs involve testing the combined effects of multiple independent variables, whereas quasi-experimental and experimental studies typically have only one or a few independent variables. Placebo studies typically involve comparing a treatment group to a control group that receives a placebo, but do not involve testing the combined effects of multiple independent variables.

Testing the Combined Effects of the Independent Variables Is a Unique