The reliability and validity of general psychotic rating scales with people with mild and moderate intellectual disabilities: an empirical investigation

Health Research

Keywords

intellectual disabilities, measures, psychosis, schizophrenia, PSYCHIATRIC-ASSESSMENT SCHEDULE, MENTALLY-RETARDED ADULTS, PAS-ADD, SCHIZOPHRENIA DIAGNOSIS, LEARNING-DISABILITY, RETARDATION, SYMPTOMS, CRITERIA

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The reliability and validity of general psychotic rating scales with people with mild and moderate intellectual disabilities: an empirical investigation. / Hatton, C ; Haddock, G ; Taylor, J L et al.
In: Journal of Intellectual Disability Research, Vol. 49, 07.2005, p. 490-500.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{3ac551fba4174b21a4e73afaf0122ba8,

title = "The reliability and validity of general psychotic rating scales with people with mild and moderate intellectual disabilities: an empirical investigation",

abstract = "Background Whilst assessment tools have been developed to diagnose schizophrenia in people with mild intellectual disabilities (IDs), little attention has been paid to developing reliable and valid dimensional measures of psychotic experiences with this population. This study investigates the reliability and validity of two such measures developed for the general adult psychiatric population, the Positive and Negative Syndrome Scale (PANSS) and the Psychotic Symptom Rating Scales (PSYRATS), with a population of adults with mild IDs.Method Sixty-two adults with mild IDs were interviewed using the PANSS and PSYRATS, and independently interviewed using the Psychiatric Assessment Schedule - Adults with Developmental Disability (PAS-ADD) to obtain psychiatric diagnoses to the criteria of the International Classification of Diseases - Tenth Revision (ICD-10). On the basis of ICD-10 diagnosis, participants were divided into three groups: psychosis (n = 11); other mental health problem (n = 14); no mental health problem (n = 37). PANSS and PSYRATS subscale scores were compared across these three groups and were correlated with PAS-ADD symptom scores across a number of PAS-ADD symptom domains.Results All PANSS and PSYRATS subscales showed adequate internal reliability, largely good test-retest reliability, and logical inter-correlations between subscales. The PANSS positive symptoms and the PSYRATS auditory hallucinations subscales differentiated between the psychosis group and the other groups; the PANSS general symptoms subscale differentiated between the psychosis and no mental health problem groups; and the PANSS negative symptoms and the PSYRATS delusions subscales did not differentiate between the three groups.Conclusions The PANSS and PSYRATS are promising measures for use with people with mild IDs and psychotic experiences, although further investigation of items relating to negative symptoms and delusions is warranted.",

keywords = "intellectual disabilities, measures, psychosis, schizophrenia, PSYCHIATRIC-ASSESSMENT SCHEDULE, MENTALLY-RETARDED ADULTS, PAS-ADD, SCHIZOPHRENIA DIAGNOSIS, LEARNING-DISABILITY, RETARDATION, SYMPTOMS, CRITERIA",

author = "C Hatton and G Haddock and Taylor, {J L} and J Coldwell and R Crossley and N Peckham",

year = "2005",

month = jul,

language = "English",

volume = "49",

pages = "490--500",

journal = "Journal of Intellectual Disability Research",

issn = "0964-2633",

publisher = "Blackwell Publishing Ltd",

}

RIS

TY - JOUR

T1 - The reliability and validity of general psychotic rating scales with people with mild and moderate intellectual disabilities: an empirical investigation

AU - Hatton, C

AU - Haddock, G

AU - Taylor, J L

AU - Coldwell, J

AU - Crossley, R

AU - Peckham, N

PY - 2005/7

Y1 - 2005/7

N2 - Background Whilst assessment tools have been developed to diagnose schizophrenia in people with mild intellectual disabilities (IDs), little attention has been paid to developing reliable and valid dimensional measures of psychotic experiences with this population. This study investigates the reliability and validity of two such measures developed for the general adult psychiatric population, the Positive and Negative Syndrome Scale (PANSS) and the Psychotic Symptom Rating Scales (PSYRATS), with a population of adults with mild IDs.Method Sixty-two adults with mild IDs were interviewed using the PANSS and PSYRATS, and independently interviewed using the Psychiatric Assessment Schedule - Adults with Developmental Disability (PAS-ADD) to obtain psychiatric diagnoses to the criteria of the International Classification of Diseases - Tenth Revision (ICD-10). On the basis of ICD-10 diagnosis, participants were divided into three groups: psychosis (n = 11); other mental health problem (n = 14); no mental health problem (n = 37). PANSS and PSYRATS subscale scores were compared across these three groups and were correlated with PAS-ADD symptom scores across a number of PAS-ADD symptom domains.Results All PANSS and PSYRATS subscales showed adequate internal reliability, largely good test-retest reliability, and logical inter-correlations between subscales. The PANSS positive symptoms and the PSYRATS auditory hallucinations subscales differentiated between the psychosis group and the other groups; the PANSS general symptoms subscale differentiated between the psychosis and no mental health problem groups; and the PANSS negative symptoms and the PSYRATS delusions subscales did not differentiate between the three groups.Conclusions The PANSS and PSYRATS are promising measures for use with people with mild IDs and psychotic experiences, although further investigation of items relating to negative symptoms and delusions is warranted.

AB - Background Whilst assessment tools have been developed to diagnose schizophrenia in people with mild intellectual disabilities (IDs), little attention has been paid to developing reliable and valid dimensional measures of psychotic experiences with this population. This study investigates the reliability and validity of two such measures developed for the general adult psychiatric population, the Positive and Negative Syndrome Scale (PANSS) and the Psychotic Symptom Rating Scales (PSYRATS), with a population of adults with mild IDs.Method Sixty-two adults with mild IDs were interviewed using the PANSS and PSYRATS, and independently interviewed using the Psychiatric Assessment Schedule - Adults with Developmental Disability (PAS-ADD) to obtain psychiatric diagnoses to the criteria of the International Classification of Diseases - Tenth Revision (ICD-10). On the basis of ICD-10 diagnosis, participants were divided into three groups: psychosis (n = 11); other mental health problem (n = 14); no mental health problem (n = 37). PANSS and PSYRATS subscale scores were compared across these three groups and were correlated with PAS-ADD symptom scores across a number of PAS-ADD symptom domains.Results All PANSS and PSYRATS subscales showed adequate internal reliability, largely good test-retest reliability, and logical inter-correlations between subscales. The PANSS positive symptoms and the PSYRATS auditory hallucinations subscales differentiated between the psychosis group and the other groups; the PANSS general symptoms subscale differentiated between the psychosis and no mental health problem groups; and the PANSS negative symptoms and the PSYRATS delusions subscales did not differentiate between the three groups.Conclusions The PANSS and PSYRATS are promising measures for use with people with mild IDs and psychotic experiences, although further investigation of items relating to negative symptoms and delusions is warranted.

KW - intellectual disabilities

KW - measures

KW - psychosis

KW - schizophrenia

KW - PSYCHIATRIC-ASSESSMENT SCHEDULE

KW - MENTALLY-RETARDED ADULTS

KW - PAS-ADD

KW - SCHIZOPHRENIA DIAGNOSIS

KW - LEARNING-DISABILITY

KW - RETARDATION

KW - SYMPTOMS

KW - CRITERIA

M3 - Journal article

VL - 49

SP - 490

EP - 500

JO - Journal of Intellectual Disability Research

JF - Journal of Intellectual Disability Research

SN - 0964-2633

ER -

Research

Keywords