How does the nonequivalent control group pretest-posttest design differ from the classical experimental design?
A) The design lacks the use of a comparison group.
B) The independent variable is unable to be manipulated.
C) Groups are not measured before and after an intervention
D) Researchers are unable to randomly assign subjects to groups.

Question

Quizplus · Accepted Answer

The nonequivalent control group pretest-posttest design differs from the classical experimental design in that it does not allow for random assignment of subjects to groups, which can lead to differences between groups that are not due to the intervention.

How Does the Nonequivalent Control Group Pretest-Posttest Design Differ from the Classical