Question

Chris would like to conduct a study on the effectiveness of a new substance-abuse treatment program. He has a sample of participants go through the program and he uses as a comparison group people who did not volunteer for the program but were eligible. Chris has used a(n) _________ design for his study.
a. nonequivalent group
b. interrupted time-series
c. pretest-posttest control-group
d. Solomon four-group

Answer 1

Answer:

The correct answer is letter "A": nonequivalent group.

Explanation:

While conducting studies, nonequivalent groups are those where the target audience is not selected randomly. Instead, the participants are chosen generating another group represented by all those individuals who match the research criteria but, because of a reason, were not selected.

There are different types of nonequivalent groups such as posttest only nonequivalent groups or pretest-posttest nonequivalent groups, for instance.