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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
Setzer, J. Carl; He, Yi – GED Testing Service, 2009
Reliability Analysis for the Internationally Administered 2002 Series GED (General Educational Development) Tests Reliability refers to the consistency, or stability, of test scores when the authors administer the measurement procedure repeatedly to groups of examinees (American Educational Research Association [AERA], American Psychological…
Descriptors: Educational Research, Error of Measurement, Scores, Test Reliability
