Examined aspects of the validity of the Behavior Assessment System for Children (BASC; Reynolds & Kamphaus, 1992) Parent Rating Scale (BASC-PRS) in 156 children with cross-setting disruptive behavior. The BASC-PRS is a recently published multidimensional measure composed of conceptually derived scales created for use in conjunction with psychiatric and educational classification systems. Convergent validity was assessed through correlations of BASC-PRS scale scores with scale scores on the Child Behavior Checklist/4-18 (CBCL/4-18; Achenbach, 1991b). Criterion-related validity was evaluated as the ability of BASC-PRS and CBCL/4-18 scales to predict membership in diagnostic groupings (no diagnosis, attention deficit hyperactivity disorder [ADHD] only, and ADHD with a comorbid externalizing disorder) derived via structured interviews based on the third, revised edition of the Diagnostic and Statistical Manual of Mental Disorders (American Psychiatric Association, 1987). Results showed the validity of the BASC-PRS to be comparable to that of the CBCL/4-18. Given its conceptually derived scales, the BASC-PRS may prove to be a useful-tool for assessing childhood disruptive behavior.
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