Two subgroups of learning disabled students, reading disabled only (RD) and
reading/arithmetic disabled (RAD), were contrasted at two age levels, 8 to 12 years old and …

Based on performance on standard achievement tests, first-grade children (mean age= 82
months) with IQ scores in the low-average to high-average range were classified as at risk …

Based on their performance on a standardized achievement test, second-grade children (N=
49) were classified as having mathematics difficulties with normal reading achievement (MD …

In order to assess the genetic etiology of the comorbidity of reading and mathematics
difficulties, data were ascertained from two samples:(1) 102 identical and 77 same-sex …

Gersten, Jordan, and Flojo (in this issue) provide the beginnings of an essential bridge
between basic research on mathematical disabilities (MD) in young children and the …

Three studies compared 98 children with spina bifida myelomeningocele (SBM)—a disorder
associated with high rates of math disability and spatial deficits—to 94 typically developing …

This chapter examines patterns of impaired performance in light of a detailed and explicit
model of the normal number-processing and calculation systems. It suggests that the …

Background Two hypotheses were tested regarding the characteristics of children with
mathematical learning disabilities (MLD):(a) that children with MLD would have a 'core …

Disorders of reading and mathematics co-occur at greater than chance rates, but they are
often studied separately. This article reports the reading and arithmetic outcomes at 9 years …

From a neuropsychological perspective, this article summarizes research that addresses
some of the developmental interactions of disabilities in reading, spelling, and mechanical …