Abstract
Researchers and evaluators confront difficult challenges in studying comprehensive, collaborative services for children and families. These challenges appear in the interaction of multiple professional perspectives, specification of independent and dependent variables, attribution of effects to causes, and sensitive nature of the programmatic treatment. Given limited knowledge about these complex interventions, they will best be understood through studies that are strongly conceptualized, descriptive, comparative, constructively skeptical, positioned from the bottom up, and (when appropriate) collaborative.
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