The purpose of this study was threefold: to examine unique and shared risk factors of comorbidity for reading comprehension and word-problem solving difficulties, to explore whether language minority (LM) learners are at increased risk of what we refer to as "higher order comorbidity" (reading comprehension and word-problem solving…

Competent reading requires various skills beyond those for basic word reading (i.e., core language skills, rapid naming, phonological processing). Contributing "higher-level" or domain-general processes include information processing speed and executive functions (working memory, strategic problem solving, attentional switching).…

Three cohorts of third-grade students (N = 813) were evaluated on achievement, cognitive abilities, and behavioral attention according to contrasting research traditions in defining math learning disability (LD) status: low achievement versus extremely low achievement and IQ-achievement discrepant versus strictly low-achieving LD. We use methods…

This study examines visual and spatial working memory skills in 35 third to fifth graders with both mathematics learning disabilities (MLD) and poor problem-solving skills and 35 of their peers with typical development (TD) on tasks involving both low and high attentional control. Results revealed that children with MLD, relative to TD children,…

A study compared the performance of 21 children without attention-deficit/hyperactivity disorder (ADHD) and 33 children with ADHD (ages 8-12), 21 of whom participated in the initial intervention and 12 of whom received the intervention after pre- and posttesting. After completing an 18-week intervention that included attention and problem-solving…

Poor performance on the search task, which differentiated the clinical groups from the normal group but not from one another, was associated across groups with adverse conduct ratings, lower achievement, and lower scores on the Wechsler Intelligence Scale for Children (WISC) Arithmetic, Coding, Information, Digit Span (ACID) subtests. (Author)

This study found that 33 children (ages 7-16) with learning disabilities were deficient in their inferential skills compared to normally achieving children but were not deficient in the metacognitive skill of paying attention to errors. Results also indicated that LD children do not constitute a homogeneous group. (JDD)

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…

Thirty-five college students with learning disabilities (LD) and 25 students with a history of mild head injury (MHI) were compared on tests of neuropsychological, psychological, and academic achievement. Students with LD performed poorly on linguistically oriented psychoeducational tests, whereas students with MHI showed cognitive deficits in…