Numerous studies have tried to identify the core deficit of developmental dyscalculia (DD), mainly by assessing a possible deficit of the mental representation of numerical magnitude. Research in healthy adults has shown that numerosity, duration, and space share a partly common system of magnitude processing and representation. However, in DD,…

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…

In this study, the author aimed at measuring how much limited working memory capacity constrains early numerical development before any formal mathematics instruction. To that end, 4- and 5-year-old children were tested for their memory skills in the phonological loop (PL), visuo-spatial sketchpad (VSSP), and central executive (CE); they also…

Off-line metacognition (prediction and evaluation) was assessed in 437 children (grades 2-3) with or without learning disabilities. Off-line metacognitive scores of children with reading disabilities were comparable to those of age-matched typical peers. Significantly lower prediction and evaluation scores were found for children with specific or…

Behavioural and emotional problems occur more frequently in children with learning problems than in a cross-section of the general population, both at home and at school. While behaviour problems reportedly are a key obstructive factor impeding inclusive education, children with both behavioural and learning disabilities carry a high risk of…