Multifactorial models of dyslexia have expanded how we consider heterogeneity within the population of children with dyslexia. These models are predicated on the idea that cognitive/linguistic risk factors are not deterministic but instead probabilistic, with the likelihood of difficulties involving an interaction between risk and protective…

This is an official position paper of the National Joint Committee on Learning Disabilities (NJCLD), of which the Council for Learning Disabilities has been a long-standing, active member. Response to intervention (RTI) is a critical component of a multi-tiered service delivery system. This NJCLD paper presents concerns related to the…

We investigated the variability across states in the prevalence of learning disabilities (LD) as reported by the U. S. Department of Education's Office of Special Education Programs (OSEP). This expanded upon the work of Hallahan and colleagues on interstate prevalence rate variability of special education disability categories by focusing on a…

Previous studies of K-12 dyslexia legislation have described broad trends in legislative content, such as the presence or absence of screening and intervention requirements. This study uses document analysis to provide a finer-grained description of the laws to highlight critical variation in policy that will directly affect (a) the number and…

Specific learning disabilities (SLD) identification has consistently been shown to be problematic; however, research has largely focused on SLD identification using test scores only. The present study, therefore, examined SLD identification decisions across identification methods and student evaluation data levels, including test scores,…