The heterogeneity among children with learning disabilities still represents a barrier and a challenge in their conceptualization. Although a dimensional approach has been gaining support, the categorical approach is still the most adopted, as in the recent fifth edition of the "Diagnostic and Statistical Manual of Mental Disorders." The…

Purpose: The purpose of this study is to determine whether deficits in executive function and lexical-semantic memory compromise the linguistic performance of young adults with specific learning disabilities (LD) enrolled in postsecondary studies. Method: One hundred eighty-five students with LD (n = 53) or normal language development (ND, n =…

Through a review of the literature on mathematical learning disabilities (MLD) and low achievement in mathematics (LA) we have proposed a model classifying mathematical skills involved in learning mathematics into four domains (Core number, Memory, Reasoning, and Visual-spatial). In this paper we present a new experimental computer-based battery…

This study examined math growth trajectories by disability category, gender, race, and socioeconomic status using a nationally representative sample of students ages 7 to 17. The students represented 11 federal disability categories. Compared with the national norming sample, students in all 11 disability categories had lower math achievement…

Background: Personal health records were implemented with adults with learning disabilities (AWLD) to try to improve their health-care. Materials and Method: Forty GP practices were randomized to the Personal Health Profile (PHP) implementation or control group. Two hundred and one AWLD were interviewed at baseline and 163 followed up after 12…

The purpose of the study was to examine categories of disabilities and disputes common to special education hearings in the State of Texas between 2006 and 2008, and to determine which party typically prevailed in these hearings. Special education disability was based on the 13 categories identified by the State of Texas. Chi square compared…

Test scores of two groups of learning disabled children (N=63 and N=96) were submitted to cluster analysis in an attempt to replicate previously described subtypes. All three subtypes (visuo-perceptual, linguistic, and articulo-graphomotor types) were identified along with minimally and severely impaired subtypes. Similar clusters in the same…

This study sought to identify clusters or subtypes of children with learning disabilities (LD, n=24) and brain damage (BD, n=36) using a neuropsychological battery. Five clusters were determined, but no one cluster was composed exclusively of LD or BD subjects. Significant qualitative and quantitative differences between clusters were found.…

This study examined the effects of systematic instruction emphasizing phonological awareness using three groups of readers (single deficit, double deficit and no deficit) aged 6:6 to 9:3. Twenty nine subjects identified with language-based learning deficits were assigned to a group based on assessment of phonological core deficit areas. After nine…

A study involving 104 students (7-12 years old) was conducted to identify subgroups of reading disabled children on the basis of similarities in Wechsler Intelligence Scale for Children-Revised profiles, and to explore the implications of the obtained profiles from the standpoint of remediation and differential programing. (SBH)

Specific aptitude clusters from the Woodcock-Johnson Psycho-Educational Battery (WJPEB) are examined to determine their effectiveness in evaluating aptitude-achievement discrepancies. Advantages of the Scholastic Aptitude clusters over the Broad Cognitive Ability clusters are outlined. Major types of discrepancies, rationale, and research on the…

Explores the responses of teachers and parents to a trial of 'cluster grouping' (gifted students grouped together in a mixed ability class) as a model to meet the needs of exceptional students in a junior secondary school. Identifies factors impacting the school's Cluster Group Project. Discusses the results. (CMK)

To explore the possibility that the tendency to cluster during free recall reflects organizational processes that are central to the attainment of certain reading skills, 32 mentally handicapped subjects were asked to recall 20 words from four conceptual categories on four consecutive trials. For one group the words were presented in random order…

Linguistic and perceptual tests were administered to learning disabled readers (LDR) and normal readers (NR). Results found six LDR subgroups all significantly different. Differences were found among the six LDR subgroups on measures of oral reading, reading comprehension, and spelling skills, but not on family history and developmental…