Participants may get tired of being in the study, or they may move and lose contact with the researchers. This is called ______.

Question

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Attrition refers to the loss of participants in a study due to dropouts, non-response, or other reasons such as moving or losing contact with the researchers. Erosion refers to the gradual wearing away of something, corroison refers to the damage caused by chemical reactions, and deterioration refers to the decline or worsening of something. None of these terms adequately describe the situation of losing participants in a study.

Participants May Get Tired of Being in the Study, or They