Khalad is conducting a study to determine if motivational posters inspire middle school students to be more pro-social and to complete more homework. He goes to a large school district to conduct his study. In one of the district's middle schools he puts the posters up and in the second school he does not. After the posters are up for two months he compares the GPA and number of disciplinary referrals between the two schools. Which of the following designs is most representative of Khalad's study?
A) 2 x 2 factorial design
B) Posttest-only design with nonequivalent groups
C) Posttest only control group design
D) Solomon four group design

Question

Quizplus · Accepted Answer

Khalad's study uses a posttest-only design with nonequivalent groups because there are two groups (one with motivational posters and one without), and there is no pretest measurement; the groups are also not randomly assigned, making them nonequivalent.

Khalad Is Conducting a Study to Determine If Motivational Posters