This article describes school-based assessment procedures related to attention deficit-hyperactivity disorder, including teacher rating measures, direct observations in classrooms and on playgrounds, peer ratings and sociometric measures, and permanent product measures such as academic performance. Components of a comprehensive assessment and…

Morphometric analysis of magnetic resonance imaging scans revealed that, compared to nondisabled controls, the seven children with attention deficit hyperactivity disorder had a smaller corpus callosum. Results suggest that subtle differences may exist in the brains of these children and that deviations in normal corticogenesis may underlie the…

Siblings and parents of 39 children with dyscalculia were assessed for arithmetic, reading, and attention disorders. Findings indicated a familial prevalence of dyscalculia almost tenfold higher than expected for the general population and suggest that dyscalculia, like other learning disabilities, has a significant familial aggregation,…

Eighty-two elementary school children with attention deficit disorder (ADD) and dyslexia made more errors than 83 normally reading children with ADD on a test of rhyme and alliteration. A subgroup of dyslexic children who were sensitive to rhyme and alliteration scored higher than other dyslexic children on a test of spatial ability. (Author/DB)

This paper selectively reviews research on event-related potentials (ERPs) during cognitive processing among children with attention deficit disorder. Research indicates that performance deficits during sustained attention are coupled with reduced amplitude of the P3B component of the ERP, which may be increased with stimulants. P3B latency and…

This study compared children with either attention deficit hyperactivity disorder (ADHD) (n=24), reading disability (RD) (n=33), both (n=9), or controls. Children with ADHD were characterized by difficulty with a visual search task whereas children with RD had difficulty with an auditory processing task. Specifically, children with ADHD…

Twenty subjects (ages 7-13) with attention deficit hyperactivity disorder were administered a battery of tests (including the Auditory Continuous Performance Test and the Token Test for Children) twice, first when not taking and then when taking methylphenidate. Results indicated significant improvement in performance on all measures when subjects…

For successful classification of children with attention deficit-hyperactivity disorder, major issues include (1) the need for explicit studies of identification criteria; (2) the need for systematic sampling strategies; (3) development of hypothetical classifications; and (4) systematic assessment of reliability and validity of hypothetical…

The study with 51 boys (ages 7 to 9 years) found that subjects classified as having both attention deficit disorder/hyperactivity and learning disabilities demonstrated the most external locus of control with subjects classified as only learning-disabled intermediate and subjects classified as only having attention deficit disorder/hyperactivity…

This study reports clinical characteristics of developmental right-hemisphere syndrome, a nonverbal learning disability, in 20 children (mean age 9.5 years) who also manifested attention-deficit/hyperactivity disorder, graphomotor problems, and slow performance. Diagnostic criteria included emotional and interpersonal difficulties, paralinguistic…

Assessment of 121 nondisabled elementary boys and 107 boys with attention-deficit hyperactivity disorder (ADHD), ages 7 through 14 years, found significantly lower problem-solving scores in specific math concepts and slower computational performance for the boys with ADHD when reading and problem structure were held constant. Instructional…

Twenty children with left or right hemisphere dysfunction and 10 controls were administered a comprehensive neuropsychological evaluation. Results provide limited support for the hypothesis that the right hemisphere subserves attention and concentration but not for the hypothesis that right-hemisphere deficits are more frequently associated with…

Medical evaluation of seven third-grade children with developmental dyscalculia in a mainstream setting identified neurological conditions (including petit mal seizures, Gerstmann syndrome, and attention deficit disorder without hyperactivity) in all the children. Findings suggest that children who are not improving academically should undergo…

Determining whether stimulant medication improves learning or long-term academic achievement in children with attention deficit-hyperactivity disorder involves consideration of (1) the prescription of higher than optimal doses, and (2) overinclusive treatment involving adverse responders. A study designed to overcome these theoretical deficiencies…

This study examined the performance of 96 youth hospitalized in a psychiatric hospital on a battery of language measures. Participants with both attention deficit hyperactivity disorder (ADHD) and language learning disabilities (LLD) performed similarly to those with only LLD but significantly more poorly than those with only ADHD or with neither…