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Validity and reliability of the Diagnostic Adaptive Behaviour Scale.
M J Tassé1, R L Schalock2, G Balboni3
1The Ohio State University, Nisonger Centre-UCEDD, Columbus, OH, USA.
Journal of Intellectual Disability Research : JIDR
|November 11, 2015
Summary
The Diagnostic Adaptive Behaviour Scale (DABS) demonstrates strong validity and reliability for assessing adaptive behavior limitations, aiding in intellectual disability diagnosis. Its performance is comparable to established measures, offering advantages for clinicians and researchers.
Area of Science:
- Psychometrics
- Clinical Psychology
- Developmental Psychology
Background:
- The Diagnostic Adaptive Behaviour Scale (DABS) is a novel, standardized tool for evaluating adaptive behavior limitations.
- It is designed to assist in the diagnostic process for intellectual disability.
Purpose of the Study:
- To present validity evidence for the DABS.
- To provide reliability data for the DABS.
Main Methods:
- Convergent validity was assessed by comparing DABS scores with the Vineland Adaptive Behaviour Scale, second edition.
- Test-retest reliability was determined through repeated administrations of the DABS.
- Inter-rater reliability was evaluated using inter-respondent concordance.
Main Results:
- Convergent validity coefficients ranged from 0.70 to 0.84.
- Test-retest reliability coefficients were between 0.78 and 0.95.
- Inter-rater concordance, measured by intraclass correlation coefficients, ranged from 0.61 to 0.87.
Conclusions:
- The DABS exhibits strong validity and reliability indicators.
- These findings are comparable to those of widely used adaptive behavior instruments.
- The DABS offers practical advantages for both clinicians and researchers in evaluating adaptive behavior.
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