In a between-subjects experiment,if the participants in one group are noticeably older than the participants in another group,then participant age is a confounding variable and threatens the internal validity of the experiment.

Question

In a between-subjects experiment,if the participants in one group are noticeably older than the participants in another group,then participant age is a confounding variable and threatens the internal validity of the experiment.​

Quizplus · Accepted Answer

Participant age is a potential confounding variable that can have an effect on the dependent variable in the experiment. If one group is significantly older than another group, then any differences in the dependent variable between the groups could be due to age rather than the independent variable being tested. Therefore, participant age threatens the internal validity of the experiment.

In a Between-Subjects Experiment,if the Participants in One Group Are