The Psychotic Symptom Rating Scales (PSYRATS): Their usefulness and properties in first episode psychosis

Richard Drake; Gillian Haddock; Nicholas Tarrier; Richard Bentall; Shôn Lewis

doi:10.1016/j.schres.2006.04.024

The Psychotic Symptom Rating Scales (PSYRATS): Their usefulness and properties in first episode psychosis

Richard Drake, Gillian Haddock, Nicholas Tarrier, Richard Bentall, Shôn Lewis

Research output: Contribution to journal › Article › peer-review

Abstract

The aim of this study was to investigate the reliability, validity and structure of the Psychotic Symptom Rating Scales (PSYRATS) in 257 subjects presenting with acute first episodes of schizophrenia or related disorders. The PSYRATS have been shown to assess dimensions of hallucination and delusions reliably and validly in chronically psychotic patients but not in first episode patients. Item reliability was investigated and subscale performance compared to the PANSS. The PSYRATS had good inter-rater and retest reliability. Validity was good, as assessed by internal consistency, sensitivity to change, and in relation to the PANSS. There was evidence of two delusion factors and three for hallucinations. The scales are useful complements to existing measures of symptom severity. © 2006 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	119-122
Number of pages	3
Journal	Schizophrenia Research
Volume	89
Issue number	1-3
DOIs	https://doi.org/10.1016/j.schres.2006.04.024
Publication status	Published - Jan 2007

Keywords

Delusions
First episode
PSYRATS
Schizophrenia

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10.1016/j.schres.2006.04.024

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title = "The Psychotic Symptom Rating Scales (PSYRATS): Their usefulness and properties in first episode psychosis",

abstract = "The aim of this study was to investigate the reliability, validity and structure of the Psychotic Symptom Rating Scales (PSYRATS) in 257 subjects presenting with acute first episodes of schizophrenia or related disorders. The PSYRATS have been shown to assess dimensions of hallucination and delusions reliably and validly in chronically psychotic patients but not in first episode patients. Item reliability was investigated and subscale performance compared to the PANSS. The PSYRATS had good inter-rater and retest reliability. Validity was good, as assessed by internal consistency, sensitivity to change, and in relation to the PANSS. There was evidence of two delusion factors and three for hallucinations. The scales are useful complements to existing measures of symptom severity. {\textcopyright} 2006 Elsevier B.V. All rights reserved.",

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author = "Richard Drake and Gillian Haddock and Nicholas Tarrier and Richard Bentall and Sh{\^o}n Lewis",

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T1 - The Psychotic Symptom Rating Scales (PSYRATS): Their usefulness and properties in first episode psychosis

AU - Drake, Richard

AU - Haddock, Gillian

AU - Tarrier, Nicholas

AU - Bentall, Richard

AU - Lewis, Shôn

PY - 2007/1

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N2 - The aim of this study was to investigate the reliability, validity and structure of the Psychotic Symptom Rating Scales (PSYRATS) in 257 subjects presenting with acute first episodes of schizophrenia or related disorders. The PSYRATS have been shown to assess dimensions of hallucination and delusions reliably and validly in chronically psychotic patients but not in first episode patients. Item reliability was investigated and subscale performance compared to the PANSS. The PSYRATS had good inter-rater and retest reliability. Validity was good, as assessed by internal consistency, sensitivity to change, and in relation to the PANSS. There was evidence of two delusion factors and three for hallucinations. The scales are useful complements to existing measures of symptom severity. © 2006 Elsevier B.V. All rights reserved.

AB - The aim of this study was to investigate the reliability, validity and structure of the Psychotic Symptom Rating Scales (PSYRATS) in 257 subjects presenting with acute first episodes of schizophrenia or related disorders. The PSYRATS have been shown to assess dimensions of hallucination and delusions reliably and validly in chronically psychotic patients but not in first episode patients. Item reliability was investigated and subscale performance compared to the PANSS. The PSYRATS had good inter-rater and retest reliability. Validity was good, as assessed by internal consistency, sensitivity to change, and in relation to the PANSS. There was evidence of two delusion factors and three for hallucinations. The scales are useful complements to existing measures of symptom severity. © 2006 Elsevier B.V. All rights reserved.

KW - Delusions

KW - First episode

KW - PSYRATS

KW - Schizophrenia

U2 - 10.1016/j.schres.2006.04.024

DO - 10.1016/j.schres.2006.04.024

M3 - Article

SN - 0920-9964

VL - 89

SP - 119

EP - 122

JO - Schizophrenia Research

JF - Schizophrenia Research

IS - 1-3

ER -

The Psychotic Symptom Rating Scales (PSYRATS): Their usefulness and properties in first episode psychosis

Abstract

Keywords

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