Conference Proceedings

The dimensional structure of first episode psychosis: an exploratory factor analysis

PD McGorry, RC Bell, PL Dudgeon, HJ Jackson

PSYCHOLOGICAL MEDICINE | CAMBRIDGE UNIV PRESS | Published : 1998

Abstract

BACKGROUND: Recent research has focused upon the subdiagnostic level in an effort to derive more valid domains of psychotic disorder. This has led to the influential positive-negative dichotomy in schizophrenia being superseded by a three-syndrome model. The strategy of looking for syndromes within poorly validated diagnostic categories, such as schizophrenia, has limitations, particularly since it originated in, and has been largely restricted to, the more chronic subsamples. METHOD: A representative sample of first episode psychosis (N = 509), which includes the full spectrum of functional psychosis, was utilized to re-examine the dimensional structure of functional psychosis from first pr..

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