When individuals in one group of a nonequivalent control group design experience natural changes at a faster rate than individuals in the other group,there is danger of a threat to internal validity called
A)additive effects of selection and history.
B)additive effects of selection and instrumentation.
C)additive effects of selection and maturation.
D)differential statistical regression.

Question

Quizplus · Accepted Answer

This situation is known as differential maturation, where the two groups in a nonequivalent control group design experience natural changes (such as maturity level, experience, or biological changes) at different rates, leading to an internal validity threat.

When Individuals in One Group of a Nonequivalent Control Group