Extending the regression-discontinuity approach to multiple assignment variables

  • Papay J
  • Willett J
  • Murnane R
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Abstract

The recent scholarly attention to the regression-discontinuity design has focused exclusively on the application of a single assignment variable. In many settings, however, exogenously imposed cutoffs on several assignment variables define a set of different treatments. In this paper, we show how to generalize the standard regression-discontinuity approach to include multiple assignment variables simultaneously. We demonstrate that fitting this general, flexible regression-discontinuity model enables us to estimate several treatment effects of interest. © 2011 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Regression discontinuity
  • Semi-parametric estimation
  • Treatment effects

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Authors

  • John P. Papay

  • John B. Willett

  • Richard J. Murnane

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