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Direct linkMoeyaert, Mariola; Yang, Panpan – Grantee Submission, 2021
This study introduces an innovative meta-analytic approach, two-stage multilevel meta-analysis that considers the hierarchical structure of single-case experimental design (SCED) data. This approach is unique as it is suitable to include moderators at the intervention level, participant level, and study level, and is therefore especially…
Descriptors: Hierarchical Linear Modeling, Meta Analysis, Research Design, Case Studies
Wong, Vivian C.; Steiner, Peter M.; Anglin, Kylie L. – Grantee Submission, 2018
Given the widespread use of non-experimental (NE) methods for assessing program impacts, there is a strong need to know whether NE approaches yield causally valid results in field settings. In within-study comparison (WSC) designs, the researcher compares treatment effects from an NE with those obtained from a randomized experiment that shares the…
Descriptors: Evaluation Methods, Program Evaluation, Program Effectiveness, Comparative Analysis
Zimmerman, 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
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
Wendel, Erica; Cawthon, Stephanie W.; Ge, Jin Jin; Beretvas, S. Natasha – Grantee Submission, 2015
The authors assessed the quality of single-case design (SCD) studies that assess the impact of interventions on outcomes for individuals who are deaf or hard-of-hearing (DHH). More specifically, the What Works Clearinghouse (WWC) standards for SCD research were used to assess design quality and strength of evidence of peer-reviewed studies…
Descriptors: Deafness, Partial Hearing, Intervention, Research Design
Puma, Michael; Tarkow, Allison; Puma, Anna – Grantee Submission, 2007
Background: This study evaluated the impact on student's writing ability of a structured writing program, called "Writing Wings," for 3rd, 4th, and 5th graders developed by the Success For All Foundation (SFAF). Writing is a critical skill for success in school. Purpose: The study was intended to answer one confirmatory question,…
Descriptors: Control Groups, Research Design, Childrens Writing, Writing Attitudes
