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Three conditions under which experiments and observational studies produce comparable causal estimates: New findings from within‐study comparisons
This paper analyzes 12 recent within-study comparisons contrasting causal estimates from a randomized experiment with those from an observational study sharing the same treatment group. The aim is toExpand
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An effectiveness-based evaluation of five state pre-kindergarten programs
Since 1980, the number of state pre-kindergarten (pre-K) programs has more than doubled, with 38 states enrolling more than one million children in 2006 alone. This study evaluates how five stateExpand
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Analyzing Regression-Discontinuity Designs With Multiple Assignment Variables
In a traditional regression-discontinuity design (RDD), units are assigned to treatment and comparison conditions solely on the basis of a single cutoff score on a continuous assignment variable. Expand
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Medication Safety Initiative in Reducing Medication Errors
The purpose of the study was to evaluate whether a Medication Pass Time Out initiative was effective and sustainable in reducing medication administration errors. A retrospective descriptive methodExpand
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A randomized experiment comparing random and cutoff-based assignment.
In this article, we review past studies comparing randomized experiments to regression discontinuity designs, mostly finding similar results, but with significant exceptions. The latter might be dueExpand
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Empirical Tests of the Validity of the Regression Discontinuity Design (WP-07-02)
This paper reviews the literature on whether regression discontinuity studies reproduce the results of randomized experiments conducted on the same topic. After briefly reviewing the regressionExpand
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Designs of Empirical Evaluations of Nonexperimental Methods in Field Settings
This article presents a coherent theory of the design and implementation of WSCs for evaluating NE methods and estimators in field settings. Expand
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Working Paper : Assessing Correspondence between Experimental and Non-Experimental Results in Within-Study-Comparisons
Acknowledgements: This research was supported by a collaborative NSF grant #2015-0285-00. In within-study comparison (WSC) designs, treatment effects from a non-experimental design, such as anExpand
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Research Designs for Program Evaluation
This chapter presents four research designs for assessing program effects-the randomized experiment, the regression-discontinuity, the interrupted time series, and the nonequivalent comparison group designs. Expand
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