The internal validity of quasi-experiments using nonequivalent comparison groups without random assignment is weakened when switching replications are employed.

Question

The internal validity of quasi-experiments using nonequivalent comparison groups without random assignment is weakened when switching replications are employed.​

Quizplus · Accepted Answer

Switching replications, where treatment and control groups are switched in subsequent phases, can actually strengthen internal validity by demonstrating that the observed effect is consistent across different groups, thus addressing concerns about the nonequivalent nature of the groups.

The Internal Validity of Quasi-Experiments Using Nonequivalent Comparison Groups Without