What pre-test post-test non equivalant control group?

A pre-test post-test non-equivalent control group design is a quasi-experimental research method used to evaluate the effects of an intervention. In this design, two groups are identified: one that receives the intervention (the treatment group) and another that does not (the control group). Both groups are tested before (pre-test) and after (post-test) the intervention, but the groups are not randomly assigned, which can introduce selection bias. This design allows researchers to assess changes over time and make comparisons, although causal inferences are more limited compared to randomized controlled trials.