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Keele, Luke – American Journal of Evaluation, 2015
In policy evaluations, interest may focus on why a particular treatment works. One tool for understanding why treatments work is causal mediation analysis. In this essay, I focus on the assumptions needed to estimate mediation effects. I show that there is no "gold standard" method for the identification of causal mediation effects. In…
Descriptors: Mediation Theory, Causal Models, Inferences, Path Analysis
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Kavale, Kenneth A. – Exceptionality: A Research Journal, 1991
An author of a paper (EC 602 060) that presents two causal models of learning disabilities comments on his interest in the research, how the research design developed, limitations of the research, and the need for replication with other disability groups. (JDD)
Descriptors: Causal Models, Elementary Secondary Education, Learning Disabilities, Mathematical Models