A study is conducted in which the attitudes of the staff of a rehabilitation center are assessed; then the staff is exposed to an attitude-change manipulation, and attitudes are assessed again. Another rehabilitation center of similar size is also chosen; attitudes there are measured, and then assessed again after manipulation. This quasi-experimental design is called a _____ design.
A)Solomon four-group
B)nonequivalent control group pretest-posttest
C)interrupted time series
D)control series

Question

Quizplus · Accepted Answer

This quasi-experimental design is called a nonequivalent control group pretest-posttest design because there is no random assignment to groups and the two rehabilitation centers are not equivalent in all aspects. The pretest-posttest design is used to compare the attitudes before and after the manipulation of the independent variable, and the use of a control group helps to control for alternative explanations for the changes in attitudes. The other options are not appropriate for this design as they involve different types of experimental designs or do not include a control group.

A Study Is Conducted in Which the Attitudes of the Staff