Background: Most classroom observation studies have documented significant deficiencies in the classroom attention of children with attention-deficit/hyperactivity disorder (ADHD) compared to their typically developing peers. The magnitude of these differences, however, varies considerably and may be influenced by contextual, sampling, diagnostic,…

The focus of this paper centers around timing associated with early childhood education programs and interventions using meta-analytic methods. At any given assessment age, a child's current age equals starting age, plus duration of program, plus years since program ended. Variability in assessment ages across the studies should enable everyone to…

Meta-analysis on 25 studies found that both methodologically strong and weak studies demonstrated significant behavioral deficits of children with learning disabilities in 5 areas: on-task behavior, off-task behavior, conduct disorders, distractibility, and shy/withdrawn behavior. Effect sizes clustered around 1 standard deviation. (Author/DB)