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Direct linkLedford, Jennifer R.; Barton, Erin E.; Severini, Katherine E.; Zimmerman, Kathleen N. – American Journal on Intellectual and Developmental Disabilities, 2019
The overarching purpose of this article is to provide an introduction to the use of rigorous single-case research designs (SCRDs) in special education and related fields. Authors first discuss basic design types and research questions that can be answered with SCRDs, examine threats to internal validity and potential ways to control for and detect…
Descriptors: Special Education, Research Methodology, Case Studies, Research Design
Ledford, Jennifer R.; Lambert, Joseph M.; Pustejovsky, James E.; Zimmerman, Kathleen N.; Hollins, Nicole; Barton, Erin E. – Exceptional Children, 2023
Single-case design has a long history of use for assessing intervention effectiveness for children with disabilities. Although these designs have been widely employed for more than 50 years, recent years have been especially dynamic in terms of growth in the use of single-case design and application of standards designed to improve the validity…
Descriptors: Research Design, Educational Research, Case Studies, Special Education
Ledford, Jennifer R.; Barton, Erin E.; Severini, Katherine E.; Zimmerman, Kathleen N.; Pokorski, Elizabeth A. – Education and Training in Autism and Developmental Disabilities, 2019
Two studies regarding the graphic display of single case data are presented. First, measurement and graphical display of data from studies in highly-ranked journals in special education were assessed. Measurement of desirable behaviors rather than undesirable behaviors was common and most studies used sessions and percentages as x and y-values,…
Descriptors: Special Education, Students with Disabilities, Research Design, Educational Research
Download full textZimmerman, Kathleen N.; Ledford, Jennifer R.; Severini, Katherine E.; Pustejovsky, James E.; Barton, Erin E.; Lloyd, Blair P. – Grantee Submission, 2018
Tools for evaluating the quality and rigor of single case research designs (SCD) are often used when conducting SCD syntheses. Preferred components include evaluations of design features related to the internal validity of SCD to obtain quality and/or rigor ratings. Three tools for evaluating the quality and rigor of SCD (Council for Exceptional…
Descriptors: Research Design, Evaluation Methods, Synthesis, Validity
Qi, Cathy H.; Barton, Erin E.; Collier, Margo; Lin, Yi-Ling; Montoya, Charisse – Focus on Autism and Other Developmental Disabilities, 2018
The purpose of this systematic review was to synthesize 22 single-case research design (SCRD) studies on social stories intervention for individuals with autism spectrum disorder (ASD). We used the What Works Clearinghouse (WWC) SCRD standards to analyze study rigor and evidence of a causal relation. We calculated four nonoverlap indices to…
Descriptors: Intervention, Research Design, Pervasive Developmental Disorders, Autism
Zimmerman, Kathleen N.; Pustejovsky, James E.; Ledford, Jennifer R.; Barton, Erin E.; Severini, Katherine E.; Lloyd, Blair P. – Grantee Submission, 2018
Varying methods for evaluating the outcomes of single case research designs (SCD) are currently used in reviews and meta-analyses of interventions. Quantitative effect size measures are often presented alongside visual analysis conclusions. Six measures across two classes--overlap measures (percentage non-overlapping data, improvement rate…
Descriptors: Research Design, Evaluation Methods, Synthesis, Intervention
Barton, Erin E.; Ledford, Jennifer R.; Lane, Justin D.; Decker, Jessica; Germansky, Sara E.; Hemmeter, Mary Louise; Kaiser, Ann – Topics in Early Childhood Special Education, 2016
Research in early intervention/early childhood special education (EI/ECSE) is focused on identifying effective practices related to positive outcomes for young children with disabilities and their families. Individual responses to evidence-based practices are often variable, and non-responders are common. Single case research (SCR) might be…
Descriptors: Early Intervention, Early Childhood Education, Special Education, Young Children
