A research study in which evaluation is performed using a control group that is similar to the experimental group,but not selected at random or specifically matched is a
A)time-series design.
B)multiple time-series design.
C)nonequivalent control group design.
D)posttest-only control group design.
E)one-shot case study.

Question

Quizplus · Accepted Answer

The nonequivalent control group design involves using a control group that is not selected at random or specifically matched to the experimental group. This design is used to evaluate the effectiveness of an intervention or treatment, and is relatively simple and easy to implement. However, it is vulnerable to selection bias, in which the groups are not truly similar and may differ in important ways that affect the outcome of the study.

A Research Study in Which Evaluation Is Performed Using a Control