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The Portuguese version of the Personal and Social Performance Scale (PSP): reliability, validity, and relationship with cognitive measures in hospitalized and community schizophrenia patients

Abstract

Purpose  

Deficits in social functioning are a core feature of schizophrenia and are influenced by both symptomatic and neurocognitive
variables. In the present study we aimed to determine the reliability and validity of the Portuguese version of the Personal
and Social Performance (PSP) scale, and possible correlations with measures of cognitive functioning.

Methods  

One-hundred and four community and inpatients with schizophrenia were assessed using measures of social functioning and symptom
severity alongside measures of executive function, processing speed, and verbal memory.

Results  

Convergent validity with the GAF in the four domains of the PSP varied from 0.357 to 0.899. Reliability was found to be satisfactory,
with a Cronbach’s alpha coefficient of 0.789. Inter-rater reliability in the four domains of the PSP varied from 0.430 to
0.954. Low-functioning patients (PSP < 70) were older, had longer duration of illness, were more symptomatic and had worse
cognitive performances, as compared with high-functioning patients (PSP ≥ 70). In a regression model, deficits in social functioning
were strongly predicted both by symptomatic and neurocognitive variables; these together accounted for up to 62% of the variance.

Conclusions  

The present study supports the reliability and validity of the Portuguese language version of the PSP and further supports
the original measure. The co-administration of brief cognitive assessments with measures of functioning may lead to more focused
interventions, possibly improving outcomes in this group.

  • Content Type Journal Article
  • Category Original Paper
  • Pages 1-10
  • DOI 10.1007/s00127-011-0412-6
  • Authors
    • Sofia Brissos, Lisbon’s Psychiatric Hospitalar Centre, Rua Conde Redondo, nº 8 3º dt, 1150-105 Lisbon, Portugal
    • Filipa Palhavã, Lisbon’s Psychiatric Hospitalar Centre, Rua Conde Redondo, nº 8 3º dt, 1150-105 Lisbon, Portugal
    • João Gama Marques, Lisbon’s Psychiatric Hospitalar Centre, Rua Conde Redondo, nº 8 3º dt, 1150-105 Lisbon, Portugal
    • Susana Mexia, Lisbon’s Psychiatric Hospitalar Centre, Rua Conde Redondo, nº 8 3º dt, 1150-105 Lisbon, Portugal
    • Ana Lisa Carmo, Department of Psychiatry, Santa Maria’s University Hospital, Lisbon, Portugal
    • Manuel Carvalho, Department of Psychiatry, Santa Maria’s University Hospital, Lisbon, Portugal
    • Cátia Dias, Department of Psychiatry, Santa Maria’s University Hospital, Lisbon, Portugal
    • João Data Franco, Department of Psychiatry, Santa Maria’s University Hospital, Lisbon, Portugal
    • Rita Mendes, Department of Psychiatry, Santa Maria’s University Hospital, Lisbon, Portugal
    • Pedro Zuzarte, Department of Psychiatry, Santa Maria’s University Hospital, Lisbon, Portugal
    • Ana Isabel Carita, Faculty of Human Kinetics, Technical University of Lisbon, Lisbon, Portugal
    • Andrew Molodynski, Department of Psychiatry, Social Psychiatry Group, Oxford University, Oxford, UK
    • Maria Luisa Figueira, Department of Psychiatry, Santa Maria’s University Hospital, Lisbon, Portugal
    • Journal Social Psychiatry and Psychiatric Epidemiology
    • Online ISSN 1433-9285
    • Print ISSN 0933-7954
Posted in: Journal Article Abstracts on 07/10/2011 | Link to this post on IFP |
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