In a nonequivalent group design, why do we use the terms "treatment" and "comparison" instead of "experimental" and "control" groups?
A) Participants serve as their own comparison group; there is no true control group.
B) The nonequivalent group design is expressly used for clinical research, which is why the name changed from "experimental" to "treatment."
C) The researchers make "comparisons" to past research instead of having a "control" group.
D) The participants have not been randomly assigned to groups.

Question

Quizplus · Accepted Answer

In a nonequivalent group design, participants are not randomly assigned to groups, which means the groups may not be equivalent at the start of the experiment. Therefore, the terms "treatment" and "comparison" are used instead of "experimental" and "control" to reflect this lack of random assignment and potential pre-existing differences between groups.

In a Nonequivalent Group Design, Why Do We Use the Terms