Chromosomal microarray analysis (CMA) has emerged as a powerful new tool to identify genomic abnormalities associated with a wide range of developmental disabilities including congenital malformations, cognitive impairment, and behavioral abnormalities. CMA includes array comparative genomic hybridization (CGH) and single nucleotide polymorphism…

The finding of major significance in this study concerns the effect of stimulant drug medication on the relationship between heart rate deceleration and reaction time with the clinic children. (Authors)

Compares the development of working memory in normally achieving children and learning disabled children. Results show a growth of working memory as a function of age. Deficits in working memory for subtypes of learning disabled children are discussed. (RJC)

Found that learning-disabled (LD) children used more task-relevant private speech than normally achieving classmates during academic seatwork, an effect that was especially pronounced for those LD children with attention-deficit hyperactivity disorder. Implications for intervention and future research methodology are discussed. (MDM)