Background: Vitamin D deficiency can increase the risk of bone disease, muscle weakness and fractures. The aim of this systematic review is to assess for the prevalence of Vitamin D deficiency in people with learning disability. Method: The "Preferred Reporting Items for Systematic Reviews and Meta-analyses" checklist was followed where…

The definitions of "negative knowledge" and the studies in this regard published to date have not considered the categorial distinction Wittgenstein established between knowledge and certainty. Hence, the important role that certainty, despite its omission, should have in these definitions and studies has not yet been shown. In this…

Conventional wisdom in education has suggested that students who are classified as learning disabled (LD) will exhibit inordinate difficulties learning a foreign language (FL). Even when not explicitly stated, the notion that those classified as LD have a disability for FL learning is implied. However, while beliefs about this purported disability…

Attention-deficit/hyperactivity disorder (ADHD) is frequently associated with learning disabilities. The present study examined the written composition of children with ADHD, which depends to a large degree on continuous self-regulation and attentional control skills for organizing information and maintaining the level of effort. Fifty children…

Mathematical skills are becoming increasingly critical for achieving academic and professional success. Developmental dyscalculia (DD) is a childhood-onset disorder characterized by the presence of abnormalities in the acquisition of arithmetic skills affecting approximately 5% of school age children. Diagnosing students with possible dyscalculia…

The impact of memory and anxiety on math performance was analyzed in a sample of 115 college undergraduates, all of whom had a diagnosed learning disability. The direct effects of memory and anxiety on math performance were first examined, followed by an examination of whether anxiety moderates the relationship between memory and math. Both memory…

The stated mission of the Council for Children with Behavioral Disorders (CCBD) includes ''supporting the professional development and enhancing the expertise of those who work on behalf of children with challenging behavior and their families'' (http:// www.ccbd.net/About/OurMission). The stated goal of CCBD's journal "Behavioral…

This study addresses the relationship between the acceptance of students with disabilities by their peers and their self-concept. Research shows that level of acceptance and self-concept are moderately related. Students with disabilities not accepted by their peers in regular classrooms thus run the risk of developing low self-concept. It is…

Although connectionist models provide a framework explaining how the decoding and encoding abilities work reciprocally to enhance reading and spelling ability, encoding instruction in today's schools is not a priority. Although a limited amount of high-quality experimental or control studies to date (N = 11) give empirical support to using direct,…

Background: Prader-Willi syndrome (PWS) is a rare genetic disorder characterised by developmental abnormalities leading to somatic and psychological symptoms. These include dysmorphic features, impaired growth and sexual maturation, hyperphagia, intellectual delay, learning disabilities and maladaptive behaviours. PWS is caused by a lack of…

This study examined school-related stress and depression in adolescents with and without learning disabilities. A total of 87 students (38 learning-disabled and 49 nondisabled) from secondary schools in Calgary completed questionnaires on depressive symptoms and on school-related stress. Results indicated that the adolescents with LD reported…

The relation of morphological awareness to reading and spelling skills of dyslexic children and English language learners (ELL) is investigated. The lack of reading and spelling skills is found to be significantly correlated to insensitivity to derivational morphology.

What is mathematical learning disability (MLD)? The reviews in this special issue adopt different approaches to defining the construct of MLD. Collectively, they demonstrate the current status of efforts to establish a consensus definition and the challenges faced in this endeavor. In this commentary, we reflect upon the proposed pathways to…

Objective: ADHD and learning disabilities (LD) frequently coexist and there are indications that comorbidity may increase the risk of psychopathology. Method: The current study examined the gender distribution and frequency of comorbidity and its impact on the prevalence of symptoms of anxiety, depression, and aggression in a clinic sample of 80…

The primary purpose of this report is to explore within the Canadian context the relationship between Self-Reported Learning Disabilities (SRLD) and low literacy performance using the Canadian portion of the public data set from the 2003 International Adult Literacy and Life Skills Survey (IALSS). Two primary research questions related to SRLD…