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Download full textFeller, Avi; Miratrix, Luke – Society for Research on Educational Effectiveness, 2015
The goal of this study is to better understand how methods for estimating treatment effects of latent groups operate. In particular, the authors identify where violations of assumptions can lead to biased estimates, and explore how covariates can be critical in the estimation process. For each set of approaches, the authors first review the…
Descriptors: Computation, Statistical Analysis, Statistical Bias, Outcomes of Treatment
Connors, Maia C.; Friedman-Krauss, Allison H.; Morris, Pamela A.; Page, Lindsay C.; Feller, Avi – Society for Research on Educational Effectiveness, 2014
This study seeks to answer the following question: Are impacts on Head Start classroom quality associated with impacts of Head Start on children's learning and development? This study employs a variety of descriptive and quasi-experimental methods to explore the role of classroom quality as a mediator or mechanism of Head Start impacts. This…
Descriptors: Preschool Children, Rating Scales, Child Care, Federal Programs
