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Macarthur Competence Assessment Tool for Treatment (MacCAT–T)

The MacArthur Competence Assessment Tool for Treatment (MacCAT–T) is an instrument designed to assess decision-making capacity. Designed as part of the MacArthur Competence Treatment Competence Study, a multiyear, multisite effort named for the well-known philanthropic foundation, the tool operationalizes established elements of competent decisions. The semistructured instrument, which can be completed within 20 to 30 minutes, guides clinicians through the discussion of a specific treatment decision and scores responses on four separate scales.

Structured disclosures assess patients' understanding, reasoning, appreciation, and choice, the four elements of decision making established in reviews of the established legal and ethical literature. For understanding, patients are tested on their comprehension of the nature of their illness, recommended treatment, alternatives, and risks and benefits. Reasoning evaluates patients' problem-solving ability when faced ...

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