Three cohorts of third-grade students (N = 813) were evaluated on achievement, cognitive abilities, and behavioral attention according to contrasting research traditions in defining math learning disability (LD) status: low achievement versus extremely low achievement and IQ-achievement discrepant versus strictly low-achieving LD. We use methods…

As a diagnostician, my primary responsibility is to conduct psychoeducational evaluations to determine the existence of a learning disability. Such a determination results in either the provisions for or the denial of special education services. In a quest to further understand my position within the schools, I conducted a deep study into this…

In response to Hallahan et al, the authors suggest that variability in prevalence is a function of the methods used to examine prevalence differences and that the effect specific discrepancy criteria for learning disabilities have on the number of students identified is the critical issue. (Author/DB)

The article reviews statistical and psychometric issues associated with the severe discrepancy definition of learning disabilities used in Public Law 94-142. It is proposed that these issues should not drive the psychological theory of learning disabilities and should be replaced by constructs firmly grounded in psychological theories of learning.…

The article reviews findings regarding the use of severe discrepancy formulas in the identification of learning disabilities by the Work Group on Measurement Issues in the Assessment of Learning Disabilities. Associated problems such as overreliance on test scores and the exclusion of the teacher in educational decision making are discussed.…