When selecting a comparison group in a quasi-experimental design, one should:
A) select a group unlike the experimental group:
B) select a group as similar as possible to the experimental group:
C) use random assignment.
D) avoid the use of switching replications.

Question

When selecting a comparison group in a quasi-experimental design, one should:​
A) ​select a group unlike the experimental group:
B) select a group as similar as possible to the experimental group:​
C) use random assignment.​
D) avoid the use of switching replications.​

Quizplus · Accepted Answer

When selecting a comparison group in a quasi-experimental design, it is important to choose a group that is as similar as possible to the experimental group to minimize confounding variables and increase the internal validity of the study. Random assignment may not be possible or practical in quasi-experimental designs, and switching replications are a design feature that involves alternately administering the intervention and control conditions to participants, which can introduce potential confounds to the study. Therefore, choice B is the best option.

When Selecting a Comparison Group in a Quasi-Experimental Design, One