The posttest-only control group research design controls for maturation and history as threats to internal validity.

Question

Quizplus · Accepted Answer

The posttest-only control group design involves randomly assigning participants to either the experimental group or the control group and measuring the outcome of interest only after the intervention. This design inherently controls for maturation and history because any such effects should be equally distributed across the groups due to random assignment, thus not systematically biasing the comparison of outcomes between the experimental and control groups.

The Posttest-Only Control Group Research Design Controls for Maturation and History