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Widaman, Keith F.; And Others – American Journal on Mental Retardation, 1993
Measures of 4traits (cognitive competence, social competence, social maladaption, and personal maladaption) were obtained on 157 persons with mental retardation, using 3 measurements: standardized assessment instrument, day shift staff ratings, and evening shift staff ratings. The multitrait-multimethod matrix procedure demonstrated strong…
Descriptors: Adaptive Behavior (of Disabled), Behavior Rating Scales, Cognitive Ability, Construct Validity