Which of the following is an example of a post-test only control group experimental design?
A) Store traffic is measured following the announcement of a clearance sale
B) Store traffic is measured; a sale is announced; store traffic is measured again
C) People who saw an ad are compared to people who didn't see the ad on their attitude toward the brand
D) Random assignment is used to divide participants into the control and experimental groups; a control group responds to a pre-test on brand preferences and a post-test; an experimental group responds to a pre-test, is exposed to a commercial for the brand, and responds to a post-test
E) Random assignment is used to divide participants into control and experimental groups; the experimental group is exposed to a commercial and then attitude toward the brand is measured; attitude toward the brand is also measured for the control group

Question

Quizplus · Accepted Answer

In a post-test only control group experimental design, participants are randomly assigned to control and experimental groups, but only measured after the experimental manipulation. Choice E describes this process, where both groups are measured on their attitude toward the brand after the experimental group is exposed to a commercial, without any pre-test measurements.

Which of the Following Is an Example of a Post-Test