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Steenbergen-Hu, Saiying; Olszewski-Kubilius, Paula – Journal of Advanced Academics, 2016
The article by Davis, Engberg, Epple, Sieg, and Zimmer (2010) represents one of the recent research efforts from economists in evaluating the impact of gifted programs. It can serve as a worked example of the implementation of the regression discontinuity (RD) design method in gifted education research. In this commentary, we first illustrate the…
Descriptors: Special Education, Gifted, Identification, Program Evaluation
Gentry, Marcia – Journal of Advanced Academics, 2016
In this commentary on "Does Sorting Students Improve Scores? An Analysis of Class Composition" (Collins and Gan 2013), the author discusses the findings in Collins and Gan's study on grouping to provide appropriate-level instruction to promote students' academic growth. This commentary critiques the credibility and validity of the…
Descriptors: Scores, Academic Achievement, Credibility, Validity