When a change in the dependent variable could be due to internal changes within the participant that occurred over time, __________ is a threat to internal validity.
A)history
B)maturation
C)regression to the mean
D)selection

Question

Quizplus · Accepted Answer

Maturation refers to internal changes that occur naturally within participants over time (e.g. physical, cognitive, or emotional changes) that could potentially affect the dependent variable. Therefore, maturation is a threat to internal validity when considering changes in the dependent variable. The other options (history, regression to the mean, selection) refer to different threats to internal validity.

When a Change in the Dependent Variable Could Be Due