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Direct linkFangxing Bai; Benjamin Kelcey; Yanli Xie; Kyle Cox – Society for Research on Educational Effectiveness, 2022
Background: Regression Discontinuous Design (RDD) is widely used in educational studies. Through RDD, researchers can obtain unbiased results when Randomized Experimental Design (RED) is inaccessible. Compared to RED, the RDD only requires a cut score variable (continuous) and a cutoff value to assign students to the treatment or control groups.…
Descriptors: Research Design, Regression (Statistics), Hierarchical Linear Modeling, Mediation Theory
