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Validity of the premorbid adjustment scale.
N Brill1, A Reichenberg, M Weiser
1Ashkelon Academic College, Askelon, Israel.
Schizophrenia Bulletin
|November 23, 2007
Summary
The Premorbid Adjustment Scale (PAS) accurately predicts and assesses adult functioning in males with schizophrenia, showing strong validity against retrospective measures and adolescent data.
Area of Science:
- Psychiatry
- Psychometrics
- Clinical Psychology
Background:
- Assessing premorbid functioning is crucial for understanding schizophrenia.
- The Premorbid Adjustment Scale (PAS) is a tool for this assessment.
- Its predictive and concurrent validity needs further investigation.
Purpose of the Study:
- To evaluate the predictive and concurrent validity of the PAS.
- To compare PAS with a more detailed retrospective measure.
- To assess PAS against adolescent data.
Main Methods:
- 91 males with schizophrenia or schizoaffective disorder were studied.
- PAS scores from late adolescence (16-18 years) were compared with retrospective adult data.
- Adolescent behavioral data from Draft Board screening was used for comparison.
Main Results:
- PAS social withdrawal and relations items strongly correlated with concurrent social behavior (.76-.80) and adolescent data (.52-.53).
- PAS school achievement and adjustment items correlated well with concurrent structured functioning (.71-.72) and adolescent data (.43-.47).
Conclusions:
- The PAS demonstrates strong predictive and concurrent validity.
- Self-reported premorbid functioning data in schizophrenia is valid.
- PAS is a reliable tool for assessing premorbid adjustment in schizophrenia.
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