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The construct and predictive validity of adaptive behavior.

A D Futterman, S Arndt

    American Journal of Mental Deficiency
    |March 1, 1983
    PubMed
    Summary
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    Adaptive behavior scores effectively predict program placement for individuals with intellectual disabilities, suggesting they can replace mental age (MA) assessments. This research validates adaptive behavior as a key measure.

    Area of Science:

    • Psychology
    • Special Education
    • Developmental Psychology

    Background:

    • Assessing individuals with intellectual disabilities requires valid measures for program placement.
    • Mental age (MA) has been a traditional, yet potentially limited, metric.
    • Adaptive behavior is a critical domain for understanding functional capabilities.

    Purpose of the Study:

    • To investigate the construct and predictive validity of adaptive behavior assessments.
    • To determine if adaptive behavior is generalizable across different measurement methods.
    • To compare the predictive power of adaptive behavior versus MA for program placement.

    Main Methods:

    • Multitrait multimethod analysis was employed.
    • Adaptive behavior and MA were assessed using program participation, psychometric ratings, and staff ratings.

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  • Convergent and discriminant validity were evaluated.

    • Main Results:

    • Adaptive behavior demonstrated high convergent validity, indicating consistency across methods.
    • Low discriminant validity suggests potential overlap with other constructs.
    • Adaptive behavior scores were superior to MA in predicting program placement.

    Conclusions:

    • Adaptive behavior is a valid and reliable measure for individuals with intellectual disabilities.
    • Adaptive behavior assessment offers superior predictive utility for program placement compared to MA.
    • Adaptive behavior scores can potentially replace MA in certain assessment contexts.