Evidence-based maternal and early childhood home visiting (EBHV) may support health and well-being among families headed by a caregiver with an intellectual disability or other learning difference. Little is known about tools EBHV staff can use to identify caregivers with learning differences and inform service delivery strategies. Investigators…

Single-case research design is a useful methodology for evaluating the presence of a functional relation between an intervention and the mathematical performance of students with a learning disability. However, a functional relation cannot be established with threats to internal validity of the design. External validity is impacted if researchers…

In this report, we summarize research on the identification of SLD and make recommendations for practice. The report begins with a summary of the legal requirements for SLD identification and what constitutes a comprehensive evaluation. It then discusses the attributes of SLD according to different conceptual frameworks and reviews research on the…

Treatment acceptability is an aspect of social validity that refers to participants' beliefs and perceptions about the intervention, such as the helpfulness of the strategies or the interventions' efficacy to improve performance. The purpose of this study was to conduct a systematic review of treatment acceptability measures administered during…

The purpose of this report is to present a synthesis of the research on test accommodations published in 2015 and 2016. We summarize the research to review current research trends and enhance understanding of the implications of accommodations use in the development of future policy directions, to highlight implementation of current and new…

When classifying the evidence base of practices, special education scholars typically appraise study quality to identify and exclude from consideration in their reviews unacceptable-quality studies that are likely biased and might bias review findings if included. However, study quality appraisals used in the process of identifying evidence-based…

In this "FastFacts," a state asks the Center on Enhancing Early Learning Outcomes (CEELO) to recommend experts in the field of assessing young children who are English Language Learners (ELL) to train administrators and psychologists working in district preschool programs for young children with special needs? This is particularly…

Background: In the last decades several instruments measuring anxiety in adults with intellectual disabilities have been developed. Aim: To give an overview of the characteristics and psychometric properties of self-report and informant-report instruments measuring anxiety in this group. Method: Systematic review of the literature. Results:…

This article, which introduces six papers on the validity of distinguishing subgroups of children with language and learning disabilities based on discrepancies between academic attainment and intelligence test scores, comments on the papers' diversity in samples, measurement characteristics, and statistical approaches and outlines the studies'…

Twenty years of research on the Maze, a classroom-based reading measure for students with learning disabilities, is summarized. Overall, the research is supportive of the Maze. However, the most common version requires revision to obtain minimum construct validity, and additional research is needed on reliability and usefulness of alternate forms.…

Calls into question the validity and usefulness of classifying poor readers into learning disability and nonlearning disability categories on the basis of the discrepancy between their IQs and reading achievement scores. A review of the research indicates that the premises on which this classification rests are not valid. (SLD)

Focusing primarily on learning disabled children, the article briefly reviews the literature related to perceptual skills required in reading acquisition and the validity of current perceptual measures to tap these task-related perceptual abilities, and proposes an informal task-related measure to overcome the drawbacks of more formal measures of…

The author traces reasons to support his contention that the state of the art in assessing learning disabled students is not good. Among issues examined are the following: use of tests for purposes other than those for which they were intended; technical adequacy of currently used tests (standardization, reliability, validity); the use of deficit…

The article reviews validity and reliability studies on the informal reading inventory, a diagnostic instrument to identify reading grade-level placement and strengths and weaknesses in work recognition and comprehension. Gives suggestions to improve the validity and reliability of existing inventories and to evaluate them in newly published…

This paper reviews research on the classification of students with learning disability (LD). It first examines the evolution of LD definitions and the evidence for three components of LD classification: discrepancy, heterogeneity, and exclusion. It suggests that classification hypotheses involving discrepancy and exclusion have weak validity and…