The MacArthur Treatment Competence Study. II: Measures of Abilities Related to Competence to Consent to Treatment

This article reports the development and psychometric properties of three standardized and objectively scored measures, the MacArthur Treatment Competence Research Instruments. They were designed to assess abilities related conceptually to four legal standards for competence to consent to treatment:...

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Bibliographic Details
Published in:Law and human behavior 1995-04, Vol.19 (2), p.127-148
Main Authors: Grisso, Thomas, Appelbaum, Paul S, Mulvey, Edward P, Fletcher, Kenneth
Format: Article
Language:English
Subjects:
Acknowledgments
Bioethics
Cognition
Communication
Competence
Comprehension
Control Groups
Correlation coefficients
Correlations
Decision Making
Depressive Disorder
Depressive disorders
Disclosure
Disorders
Evaluation Studies as Topic
Heart Diseases
Human
Humans
Informed Consent
Institutionalization
Jurisprudence
Legal consent
Legal Processes
Medical Patients
Mental Competency
Mental illness
Mentally Ill Persons
Methods
Patients
Psychiatric Patients
Psychiatry
Psychometrics
Reference Standards
Research Design
Schizophrenia
Symptom severity
Symptoms
Test Reliability
Treatment
United States
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Summary:This article reports the development and psychometric properties of three standardized and objectively scored measures, the MacArthur Treatment Competence Research Instruments. They were designed to assess abilities related conceptually to four legal standards for competence to consent to treatment: understanding, appreciation, rational manipulation (reasoning), and expressing a choice. Scoring reliability, internal consistency, intertest correlations, and test-retest correlations were examined with data from samples of hospitalized patients with schizophrenia, major depression, and ischemic heart disease, as well as matched non-ill community samples. The results indicate very good interscorer reliability and provide guidance for the use of the instruments and interpretation of their results in future research on patients' decisional abilities in treatment contexts.
ISSN:0147-7307
1573-661X
DOI:10.1007/BF01499322