The occurrence of time processing problems in individuals with Development Dyscalculia (DD) has favored the view of a general magnitude system devoted to both numerical and temporal information. Yet, this scenario has been partially challenged by studies indicating that time difficulties can be attributed to poor calculation or counting skills,…

Recent studies have shown that children with mathematics difficulties (MD) have weaknesses in multiple areas of mathematics. Andersson, for example, recently found that children with MD perform significantly worse than other children on clock reading tasks. The present study builds on this recent finding and aims at a more profound understanding…

This study tests the hypothesis that dyslexia and dyscalculia are associated with two largely independent cognitive deficits, namely a phonological deficit in the case of dyslexia and a deficit in the number module in the case of dyscalculia. In four groups of 8- to 10-year-olds (42 control, 21 dyslexic, 20 dyscalculic, and 26…

A majority of studies on learning disabilities have focused on elementary grades. Although problems with learning disabilities are life-affecting only a few studies focus on deficits in adults. In this study adults with isolated mathematical disabilities (n = 101) and adults with combined mathematical and reading disabilities (n = 130) solved…

Ability-achievement discrepancies were analyzed using the Woodcock-Johnson Psycho-Educational Battery, WISC-R, and the Peabody Individual Achievement Test administered to a sample of low achievers. Reliabilities of difference scores were moderately high. Reliabilities of differences for devices normed on both the same and different populations…

Two studies that included high school students classified as at risk for learning a foreign language are described. The first compared at-risk students classified as learning disabled with at-risk students not classified as LD. The second investigated only students classified as LD, comparing them with and without discrepancies between their…

Describes two experiments that were designed to test the effectiveness of a microcomputer-based vocabulary program for high school students. Pretest and posttest methodologies are described for learning-disabled, remedial, and general students, and results for the experimental and control groups are compared. (18 references) (Author/LRW)

This study examined the instructional effectiveness of three software learning environments--LOGO, drill and practice, and teacher-directed activities--for preschool special needs children. Cognitive distancing was applied to classify children and child-software interactions; dependent measures included indicators of problem solving, skill…