Although several studies have examined the prevalence of comorbid psychiatric disorders in children with autism spectrum disorders, there are no current longitudinal studies of such children regarding the impact of comorbidity. In this study, 44 of an original sample of 175 preschoolers were located after 5 1/2 years, at an average chronological…

Lack of progress of children with emotional disturbance (ED) has begun to be documented in longitudinal school-based studies. Variability in these studies may be due to several factors, including widespread differences in academic, behavioral, and social functioning of these children, their special education status, and school contextual factors.…

This article reviews 24 meta-analyses concerned with special education interventions and draws tentative conclusions about the relative power of interventions as determined by magnitude of mean effect size for each. Highest effect sizes were obtained for use of mnemonic strategies, reading comprehension strategies, behavior modification, and…