If a disorder occurs only in the presence of Factor X but only when Factor Y or Factor Z are present, we might suspect that Factor X is a _____ cause of the disorder.

Name: If a disorder occurs only in the presence of Factor X but only when Factor Y or Factor Z are present, we might suspect that Factor X is a _____ cause of the disorder.
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Question

Quizplus · Accepted Answer

Factor X is necessary because the disorder only occurs in its presence, but it is not sufficient because Factors Y or Z are also needed for the disorder to occur.

If a Disorder Occurs Only in the Presence of Factor