When two groups in a nonequivalent control group design do not differ on the pretest,the researcher can conclude that
A)the two groups are equivalent only on the dependent variable measured on the pretest.
B)the two groups are not equivalent on any dependent variables.
C)the two groups will show the same natural growth rate over the course of the study.
D)the two groups are equivalent.

Question

Quizplus · Accepted Answer

The two groups are equivalent only on the dependent variable measured on the pretest, as nonequivalent control group designs do not ensure equivalence on other variables.

When Two Groups in a Nonequivalent Control Group Design Do