Holding a participant characteristic (such as age or gender) constant strengthens ____ and weakens ____.
A) internal validity; external validity
B) external validity; internal validity
C) reliability; validity
D) accuracy; reliability

Question

Quizplus · Accepted Answer

Holding a participant characteristic constant strengthens internal validity because it reduces the influence of extraneous variables on the dependent variable, allowing for a more accurate assessment of causal relationships. However, it weakens external validity because the results may not generalize to other populations that differ in that characteristic.

Holding a Participant Characteristic (Such as Age or Gender) Constant