The purpose of this meta-analysis was to examine the literature base of single-case research design studies using video analysis to determine its effectiveness on teacher outcomes. Primary, ancestral, citation, and first author searches identified 12,047 dissertations and peer-reviewed articles published from 2010 to 2020. Each study (n = 24) was…

In special education, multilevel models of single-case research have been used as a method of estimating treatment effects over time and across individuals. Although multilevel models can accurately summarize the effect, it is known that if the model is misspecified, inferences about the effects can be biased. Concern with the potential for model…

Students with significant cognitive disabilities present an assessment dilemma that centers on access and validity in large-scale testing programs. Typically, access is improved by eliminating construct-irrelevant barriers, while validity is improved, in part, through test standardization. In this article, one state's alternate assessment data…

Recent studies have raised concerns about the vagueness of alternate assessment eligibility guidelines, specifically, that students with mild disabilities (SWMD) have been inappropriately assigned to alternate assessment--alternate achievement standards (AA-AAS). In this study, special education teachers (N = 317) were surveyed about SWMD in…

Reporting standards and critical appraisal tools serve as beacons for researchers, reviewers, and research consumers. Parallel to existing guidelines for researchers to report and evaluate group-comparison studies, single-case experimental (SCE) researchers are in need of guidelines for reporting and evaluating SCE studies. A systematic search was…

The two most frequently used methods for assessing performance on chained tasks are single opportunity probes (SOPs) and multiple opportunity probes (MOPs). Of the two, SOPs may be easier and less time-consuming but can suppress actual performance. In comparison, MOPs can provide more information but present the risk of participants acquiring…

Federal and state policies require all students with significant cognitive disabilities to participate in state assessments and be included in measures of adequate yearly progress. Although these alternate assessments of grade-level content based on alternate achievement standards have been in place for several years, little is known about the…

Current methods for detecting growth of students' problem-solving skills in math focus mainly on analyzing changes in test scores. Score-level analysis, however, may fail to reflect subtle changes that might be evident at the item level. This article demonstrates a method for studying item-level changes using data from a multiwave experiment with…

The purpose of this study was to use differential item functioning (DIF) and latent mixture model analyses to explore factors that explain performance differences on a large-scale mathematics assessment between examinees allowed to use a calculator or who were afforded item presentation accommodations versus those who did not receive the same…

Instructional time use is an intervention without equal. The measure of such has clear and important implications for special education practice and research. Although exhortations to maximize instruction and thereby student engagement exist throughout the literature, few studies discuss how special education teachers use their time, and none…

This study examines the effects of two test modifications--resource guide and read-aloud--on the reading performance of students within the context of a large-scale statewide assessment in Georgia. Schools were both randomly selected and assigned to one of three possible test conditions: resource guide, read-aloud, or standard test condition.…

Students with significant disabilities must participate in large-scale assessments, often using an alternate assessment judged against alternate achievement standards. The development and administration of this type of assessment must necessarily balance meaningful participation with accurate measurement. In this study, generalizability theory is…

Recent legislative and school reform efforts require schools to evaluate and improve educational practices for students with severe disabilities. The authors developed the "Program Quality Measurement Tool" (PQMT) to enable administrators and educators to evaluate the educational programming provided to students with severe disabilities against…

Many students with emotional or behavioral disorders (EBD) display both learning and behavioral problems that make it difficult for teachers to provide effective instruction. In turn, a lack of exposure to effective instruction contributes to poor academic and behavioral outcomes. In this article, the authors argue that the interaction between the…

The authors report on a mixed-methods review of 24 studies that explores the predictive validity of dynamic assessment (DA). For 15 of the studies, they conducted quantitative analyses using Pearson's correlation coefficients. They descriptively examined the remaining studies to determine if their results were consistent with findings from the…