The simplest way to evaluate threats to internal validity due to history, maturation, and regression is to
A)include a control group
B)include a pretest as well as a postest
C)use only subject variables
D)use a subject pool

Question

Quizplus · Accepted Answer

Including a control group allows researchers to compare the experimental group to a group that does not receive the treatment, helping to account for external factors like history, maturation, and regression that could affect the results.

The Simplest Way to Evaluate Threats to Internal Validity Due