A Practical Introduction to Regression Discontinuity Designs: Extensions
arxiv(2023)
摘要
This monograph, together with its accompanying first part Cattaneo, Idrobo
and Titiunik (2020), collects and expands the instructional materials we
prepared for more than 50 short courses and workshops on Regression
Discontinuity (RD) methodology that we taught between 2014 and 2023. In this
second monograph, we discuss several topics in RD methodology that build on and
extend the analysis of RD designs introduced in Cattaneo, Idrobo and Titiunik
(2020). Our first goal is to present an alternative RD conceptual framework
based on local randomization ideas. This methodological approach can be useful
in RD designs with discretely-valued scores, and can also be used more broadly
as a complement to the continuity-based approach in other settings. Then,
employing both continuity-based and local randomization approaches, we extend
the canonical Sharp RD design in multiple directions: fuzzy RD designs, RD
designs with discrete scores, and multi-dimensional RD designs. The goal of our
two-part monograph is purposely practical and hence we focus on the empirical
analysis of RD designs.
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