Although the measurement of adaptive behavior has been proposed as a means of reducing diagnostic error, concerns regarding the construct validity of adaptive behavior measures have only been partly addressed. A multitrait-multimethod analysis was used to examine evidence of construct validity for the Developmental Profile and the condensed Learning Accomplishment Profile with a sample of preschool children referred for psychological evaluation. The relationship between these two measures and the Stanford-Binet was also examined. Overall, the results indicated substantial mean-score differences across instruments, a low degree of convergent and discriminant validity across adaptive behavior domains, and a high degree of within-scale intercorrelations that would disallow meaningful profile interpretation. The Developmental Profile seemed to be excessively correlated with the Binet.
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