Comparison of twins (40 identical and 23 fraternal) for mathematics deficits (MD), in which at least one member had a mathematics disability, found evidence for a significant genetic etiology. However, tests for the differential etiology of MD as a function of reading performance level were nonsignificant. (Author/DB)

This study examined whether indicators of math learning disability were observed in 35 5- and 6-year-olds with either neurofibromatosis, Turner Syndrome, or fragile X syndrome and compared to controls. Findings indicate that girls with fragile X or Turner syndrome but not neurofibromatosis are significantly more likely to have specific math…

Findings from a prospective longitudinal study of math disability (MD) addressed its incidence during primary school, the utility of different MD definitions, and evidence of MD subtypes. Findings indicated only 22 of 209 participants demonstrated "persistent MD"; reading disability was more frequent in this group; and reading related skills and…

The study found that primary grade children with reading impairments (n=24) or learning disabilities (n=8) demonstrated a marked deficit in ability to discriminate patterned pairs of tones on the Seashore Rhythm Test compared to controls (n=26). Results suggest use of the test to detect young children with potential reading problems. (Author/DB)

This article proposes a two-factor theory of mathematics disabilities based on the premise that weak cognitive representations lead to poorer retrieval of information from long term memory. Comparison of children with math disabilities alone (MD) and those with both math and reading disabilities (MD/RD) suggests that weak phonological processing…

This comparison of regression discrepancy model results for learning disability identification used published IQ-achievement and reliability coefficients and generic, mean values. Use of mean IQ-achievement values resulted in higher discrepancy rates for a clinical sample. Use of both mean IQ-achievement and reliability values resulted in higher…

The SAT I: Reasoning Test was introduced in March 1993 for the national testing program of academic preparation and ability of college applicants, including students with disabilities. A survey was administered to 1,001 students with disabilities participating in a field trial of the SAT I prototype test. Students' disabilities were in the areas…

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…

This paper reports the results of an SAT I field trial which examined test performance and efficiency of test timing for students with disabilities. A prototype SAT I test was administered to 1,113 students with disabilities in December 1992, in special formats and using special accommodations, to obtain information about the level of performance…