Sometimes participants in an experiment may drop out before completing the experiment. If this occurs more in one condition than in others, it introduces a confound called:

Question

Quizplus · Accepted Answer

When participants drop out of an experiment before completion, it is called mortality. If this occurs more in one condition than in the others, it can lead to an imbalance in the participant groups, which can affect the validity of the results. Therefore, mortality is a confound that must be avoided or controlled for in experimental design.

Sometimes Participants in an Experiment May Drop Out Before Completing