Developmental dyscalculia (DD) is a specific learning disability in mathematics that affects around 6% of the population. Currently, the core deficit of DD remains unknown. While the number sense deficit hypothesis suggests that the core deficit of DD lies in the inability to represent nonsymbolic numerosity, the access deficit hypothesis suggests…

The development of spelling skill is an intricate process for children with or at risk of Specific Learning Disabilities and requires targeted interventions. This problem exacerbates in the Greek orthographic system owning to its high complexity. The current study presents a novel spelling intervention program for Greek 3rd graders at risk of…

Published by the Canadian Test Centre (CTC), "Insight" represents a group-administered test of cognitive functioning that has been built entirely upon the Cattell-Horn-Carroll (CHC) theoretical framework. "Insight" is intended to be administered by educators and screen entire classrooms for students who present learning…

This study investigated if developmental dyscalculia (DD) in children with different profiles of mathematical deficits has the same or different cognitive origins. The defective approximate number system hypothesis and the access deficit hypothesis were tested using two different groups of children with DD (11-13 years old): a group with…

Testing accommodations have become a common component of services for students with disabilities at all levels of education. This study examined the effect of a common testing accommodation--extended time--on the reading comprehension test performance of high school students. Sixty-four students, half of whom had learning disabilities (LDs) in the…

Various testing-the-limits procedures were employed in administering the Raven Coloured Progressive Matrices test to 108 subjects with learning difficulties (age range 8.4 to 12.9 years). (Author)