Response to intervention (RTI) has been promoted for nearly 20 years as a valid supplement to or alternative method of learning disability (LD) identification. Nevertheless, important unresolved questions remain about its role in disability identification. We had two purposes when conducting this study of 229 economically and racially diverse poor…

Much of learning disabilities research relies on categorical classification frameworks that use psychometric tests and cut points to identify children with reading or math difficulties. However, there is increasing evidence that the attributes of reading and math learning disabilities are dimensional, representing correlated continua of severity.…

The longitudinal prediction of reading problems from fourth grade to sixth grade was investigated with a sample of 173 students. Reading problems at the end of sixth grade were defined by significantly below average performance (= 15th percentile) on reading factors defining word reading, fluency, and reading comprehension. Sixth grade poor reader…

The present study evaluated the stability of math learning difficulties over a 2-year period and investigated several factors that might influence this stability (categorical vs. continuous change, liberal vs. conservative cut point, broad vs. specific math assessment); the prediction of math performance over time and by performance level was also…

This paper presents a model of differential diagnosis of attentional problems and reading disability that uses intra-individual differences in performance of tasks that vary in their requirement of sustained attention such as listening comprehension (high attention requirement) and reading comprehension (lower attention requirement). The validity…

This study investigated early clinical differences between 27 children (ages 0-4) with pervasive developmental disorder not otherwise specified and 27 children with attention deficit disorder. Results revealed almost no differences between both groups with respect to pregnancy or birth complications and suggest that differences become more…

A study involving 453 pairs of Israeli parents and teachers used an item response theory measurement model(IRT) to examine the 28-item Conners Teacher's Rating Scale (CTRS) for diagnosing attention deficit hyperactivity disorder. IRT analyses revealed structural inadequacies involving the inappropriateness of the 4-point Likert-type scale used by…

Discusses the discrepancies among physicians, psychologists, and schools regarding the diagnosis and treatment of attention deficit disorders. Stresses the need for all evaluations to include cross-disciplinary cooperation, and for the acceptance of standardized measures as part of the identification and treatment process. (CR)