Contributors. Acknowledgements. Prefaces. Introduction. The role of social status variables in differentiating subgroups of hyperactive children, R Milich & S Landau. Dose-response effects of stimulant drugs: a clarification of issues, K D Gadow. Adoption and Attention Deficit Disorder, C K Deutsch. Paired-associate learning in the assessment of ADD-H children, J M Swanson. Longitudinal research on active and aggressive preschoolers: predictors of problem severity at school entry, S B Campbell. The psychopharmacological investigation of Attention Deficit Disorder, A J Zametkin. Behavior therapy, behavioral assessment, and psychostimulant medication in the treatment of attention deficit disorders: an interactive approach, W E Pelham. The problem of stimulus control and rule-governed behavior in Attention Deficit Disorder with hyperactivity, R A Barkley. Can Skinnerian Theory explain Attention Deficit Disorder? - a reply to Barkley, V I Douglas. In search of processing deficits of attention in ADD-H children, J A Sergeant. Pharmacologic and psychosocial interventions for children with ADD: comparative and combined outcomes, S H Hinshaw. Some research issues in attention deficit, E Taylor. Index.