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Download full textWing, Coady; Cook, Thomas D. – Society for Research on Educational Effectiveness, 2011
In this paper, the authors examine some of the ways that different types of non-equivalent comparison groups can be used to strengthen causal inferences based on regression discontinuity design (RDD). First, they consider a design that incorporates pre-test data on assignment scores and outcomes that were collected either before the treatment…
Descriptors: Educational Research, Research Design, Inferences, Scores
