Learning disabilities are conditions that are associated with difficulties in knowledge and skill acquisition to the level expected of same-age peers. The current book is an international examination of assessment methods, preventative measures, intervention, and research with those individuals with learning disabilities obtained from authors in…

Purpose: The objective of this study was to assess and compare the predictive values of group membership for rapid automatized naming (RAN) and phonemic awareness (PA) in Dutch school children with and without reading disabilities (RD) or specific language impairment (SLI). Method: A composite word reading index and a formal SLI diagnosis were…

Humans have an unparalleled ability to represent objects as members of multiple categories. A given object, such as a pillow may be--depending on current task demands--represented as an instance of something that is soft, as something that contains feathers, as something that is found in bedrooms, or something that is larger than a toaster. This…

The primary purpose of this study was to investigate the various neurocognitive processes concomitant to reading by attempting to identify various subtypes of reading disorders in a referred sample. Participants were 216 elementary school students in grades two through five who were given select subtests of the Woodcock Johnson-III Tests of…

We examine the performance of dyslexic participants on an unsupervised categorization task against that of matched non-dyslexic control participants. Unsupervised categorization is a cognitive process critical for conceptual development. Existing research in dyslexia has emphasized perceptual tasks and supervised categorization tasks (for which…

Forty-seven reading disabled children whose major reading problem was comprehension participated in a study to examine the effects of interventions designed to structure information in encoding and recall through the use of categorization strategy. Short term treatment consisted of four tutorials over a 2-week period. Long term treatment 1…

This paper discusses studies of visual dyslexia, the nature of visual processes involved in word recognition, and the contribution of visual memory to word recognition. The paper concludes that, though defects in the physiological aspects of visual processing can lead to reading difficulties, evidence does not indicate the existence of visual…

Results revealed that arithmetic-disabled and spelling/arithmetic-disabled children had significantly lower storage and retrieval scores on a nonverbal task but did not differ on a verbal task; reading/spelling-disabled children differed only on retrieval scores from verbal task; and the reading/spelling/arithmetic-disabled children differed only…

Results indicated recall and category clustering were highest following a manipulation to produce semantic encoding of items and lowest when children focused on items' physical features. Reading disabled boys failed to organize or study as effectively as normals. The reading disabled had difficulty in spontaneously generating effective study…

It is suggested that reading is not a unitary process, but the acquisition of a succession of skills. Different retarded readers may break down at different stages in the acquisition of these. Each disability type may be associated with a particular type of deficiency in conceptual thinking. (Author/SJL)

Using cluster analysis, a study empirically divided 54 children with attention-deficit/hyperactivity disorder (ADHD) based on their Full Scale IQ and reading ability. Clusters had different patterns of cognitive, behavioral, and neurochemical functions, as determined by discrepancies in Verbal-Performance IQ, academic achievement, parent…

Reviews the methods, technologies, and operating tenets of case studies of reading disabilities completed during the late 19th and early 20th centuries. Results suggest that the assumptions of anatomical and functional modularity for cortical processes become guiding principles for diagnosing and correcting reading difficulties. (Author/CR)

This study investigated specific processing strengths and weaknesses among 75 readers, ages 6-10, with no oral language deficits. Unsuccessful readers of different ages showed similar information processing patterns, and differed from successful first-grade readers on short-term auditory/working memory and decoding/encoding. Three potential…

The study involving 60 learning disabled (LD) and 30 normal achieving seventh through ninth graders was designed to identify adolescents homogeneously defined as exhibiting a "specific learning disability in arithmetic" and to determine if the cognitive processes (visual-spatial, visual-reasoning, and visual-memory) are related to the academic…

E. Boder and S. Jarrico have developed a test designed to measure the cognitive deficits underlying reading disabilities, which they claim will identify two basic reader subtypes: those with deficits in auditory-linguistic processing skills (dysphonetic) and those with the inability to process visual-spatial information (dyseidetic). To examine…