The concept of Matthew effects in reading development refers to a longitudinally widening gap between high achievers and low achievers. Various statistical approaches have been proposed to examine this idea. However, little attention has been paid to psychometric issues of scaling. Specifically, interval-level data are required to compare…

In a quasi-experimental evaluation of the possible role of stereotype threat in the academic performance of college students with learning disabilities (LD), students with (N = 29) and without (N = 62) identified LD took a simulated Verbal GRE® task in one of two conditions modeled after those used in past stereotype threat (ST) research. The task…

Recent studies have shown that children with mathematics difficulties (MD) have weaknesses in multiple areas of mathematics. Andersson, for example, recently found that children with MD perform significantly worse than other children on clock reading tasks. The present study builds on this recent finding and aims at a more profound understanding…

Developmental dyscalculia (DD) is a deficit in number processing and arithmetic that affects 3-6% of schoolchildren. The goal of the present study was to analyze cerebral bases of DD related to symbolic number processing. Children with DD aged 9-11 years and matched children with no learning disability history were investigated using fMRI. The two…

Spelling performance by learning-disabled sixth-grade students (n=21) was compared with that of age-matched normally achieving students and younger, normally achieving students. Learning-disabled students scored significantly lower on all tasks. Results indicated differences in mastery of the past tense spelling rule "-ed," and in some subskills…

Examined whether age-related working memory deficits in learning disabled (LD) readers across four age groups (7, 10, 13, and 20) reflected retrieval efficiency or storage capacity problems. Found that LD readers' working memory performance was inferior to skilled readers' on verbal and visual-spatial working memory tasks across all ages.…

A total of 15 learning-disabled and 15 skilled readers viewed three groups of nonsense pictures (unnamed, name-nonassociated, and name-associated), then recalled them later. Results suggested learning disabled children's reading difficulties are due to an inability to activate a semantic representation that interconnects visual and verbal codes.…

A study compared the word recognition errors of learning disabled readers using reading instructional level materials (word recognition rates between 3% and 9% and frustration level materials (word recognition rates greater than 9%). Subjects, eight learning disabled students chosen randomly from second, fifth, eighth, and eleventh grade levels,…

Investigated how working memory differences between learning-disabled and nondisabled children reflect a specific or generalized deficit and whether limitations in enhancement of learning-disabled student's working memory performance are attributable to process or storage functions. Results suggest that learning-disabled suffer generalized working…

Tests the development of phonetic codes in the memory of 141 pairs of normal and disabled readers from 7.8 to 16.8 years of age. The measurement task assessed false-positive errors in recognition memory for foil words that rhymed with words in a memory list versus foil words that did not rhyme. (Author/CI)

Examined short-term coding and retention processes in normal and disabled readers at two grade levels (third/fourth grade and sixth grade). Differences were found in processing the identities of letters in briefly exposed multiletter array. No developmental or reader-ability differences were observed in recalling the position of an item in the…

This study presents a longitudinal examination of the development of reading and reading-related skills of 22 Grade 4 children identified as having reading disabilities (RD) who had been followed since kindergarten. The analyses were conducted to investigate the patterns of emergence of RD as well as reading ability and risk status across the 5…

The revised version of this monograph serves two purposes: (1) to describe what the Wechsler Intelligence Scale for Children-Revised (WISC-R) measures with regard to reading/learning disability in the light of current findings, and (2) to summarize research with the Wechsler Intelligence Scale for Children (WISC) and WISC-R as related to…

A study examined central auditory processing ability of 15 children with attention-deficit hyperactivity disorder (ADHD), 15 children with ADHD and learning disabilities (LD), and 15 controls. Results indicated lower central-auditory-processing ability and significant correlations between reading and ADHD and reading and…