Validity and usefulness of the Wisconsin manual for assessing psychotic-like experiences

Author(s): Chapman, L. J., Chapman, J.

Journal/Book: Schizophrenia Bull. 1999; 25: Superintendent Documents, , Washington, DC 20402-9325, USA. Us Government Printing Office. 363-375.

Abstract: The Wisconsin Manual for Assessing Psychotic-like Experiences is an interview-based assessment system for rating psychotic and psychotic-like symptoms on a continuum of deviancy from normal to grossly psychotic. The original manual contained six scales, assessing thought transmission, passivity experiences, thought withdrawal, auditory experiences, personally relevant aberrant beliefs, and visual experiences. A seventh scale assessing deviant olfactory experiences was subsequently added. The rating scales have good interrater reliability when used by trained raters. Cross-sectional studies indicated that the frequency and deviancy of psychotic-like experiences are elevated among college students who were identified, hypothetically, as psychosis prone by other criteria. Psychotic-like experiences of moderate deviancy in college students successfully predicted the development of psychotic illness and poorer overall adjustment 10 years later. The manual is useful for identifying psyehosis-prone individuals and is recommended for use in linkage and treatment outcome studies. The present article provides an interview schedule for collecting information required for rating psychotic-like experiences.

Note: Article Kwapil TR, Univ N Carolina, Dept Psychol, POB 26164, Greensboro,NC 27402 USA

Keyword(s): psychotic-like experience; psychosis proneness; assessment; PRONE COLLEGE-STUDENTS; SOCIAL ANHEDONIA; MAGICAL IDEATION; PERCEPTUAL ABERRATION; SCHIZOPHRENIA; PREDICTION; SCALE; PERSONALITY; INDICATOR; SYMPTOMS

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