Construct Validity of Dimensions of Adaptive Behavior: A Multitrait-Multimethod Evaluation.

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 convergent validity, clear discriminant validity, and only moderate levels of method variance. (Author/JDD)