The Motivation and Pleasure Scale–Self-Report (MAP-SR): Reliability and validity of a self-report measure of negative symptoms

Abstract The Clinical Assessment Interview for Negative Symptoms (CAINS) is an empirically developed interview measure of negative symptoms. Building on prior work, this study examined the reliability and validity of a self-report measure based on the CAINS—the Motivation and Pleasure Scale–Self-Rep...

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Bibliographic Details
Published in:Comprehensive psychiatry 2013-07, Vol.54 (5), p.568-574
Main Authors: Llerena, Katiah, Park, Stephanie G, McCarthy, Julie M, Couture, Shannon M, Bennett, Melanie E, Blanchard, Jack J
Format: Article
Language:English
Subjects:
Adult
Anhedonia
Biological and medical sciences
Cognition & reasoning
Colleges & universities
Depression - psychology
Female
Humans
Interviews
Male
Medical sciences
Middle Aged
Motivation
Pleasure
Psychiatric Status Rating Scales
Psychiatry
Psychology. Psychoanalysis. Psychiatry
Psychometrics
Psychopathology. Psychiatry
Psychotic Disorders - psychology
Reproducibility of Results
Schizophrenia
Schizophrenic Psychology
Self Report
Social Adjustment
Validation studies
Validity
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Summary:Abstract The Clinical Assessment Interview for Negative Symptoms (CAINS) is an empirically developed interview measure of negative symptoms. Building on prior work, this study examined the reliability and validity of a self-report measure based on the CAINS—the Motivation and Pleasure Scale–Self-Report (MAP-SR)—that assesses the motivation and pleasure domain of negative symptoms. Thirty-seven participants with schizophrenia or schizoaffective disorder completed the 18-item MAP-SR, the CAINS, and other measures of functional outcome. Item analyses revealed three items that performed poorly. The revised 15-item MAP-SR demonstrated good internal consistency and convergent validity with the clinician-rated Motivation and Pleasure scale of the CAINS, as well as good discriminant validity, with little association with psychotic symptoms or depression/anxiety. MAP-SR scores were related to social anhedonia, social closeness, and clinician-rated social functioning. The MAP-SR is a promising self-report measure of severity of negative symptoms.
ISSN:0010-440X
1532-8384
DOI:10.1016/j.comppsych.2012.12.001