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SDS Seminar Series: Dr. Erin Hartman
Friday, October 23, 2020, 02:00pm - 03:00pm
Contact : email

 

The Fall 2020 SDS Seminar Series continues with Dr. Erin Hartman (Harrington Fellow; The University of Texas at Austin, McCombs School of Business; Department of Information, Risk, and Operations Management), on Friday, October 23rd, 2020 from 2:00 p.m. to 3:00 p.m. via Zoom. Please contact stat.admin@austin.utexas.edu for the Zoom link.

Title"Elements of External Validity: Framework, Design, and Analysis"

Abstract: External validity of randomized experiments is a focus of long-standing debates in the social sciences. While the issue has been extensively studied at the conceptual level, unfortunately, in practice, few empirical studies have explicit design or analysis aimed towards externally valid inferences. In this article, we make three contributions to improve empirical approaches for external validity. First, we propose a formal framework that encompasses four dimensions of external validity; X-, T-, Y-, and C-validity (units, treatments, outcomes, and contexts/settings). We clarify how the proposed framework synthesizes diverse external validity concerns that arise in practice. We then distinguish two central goals of generalization and develop tailored methodologies. To conduct effect-generalization — generalizing the magnitude of causal effects, we develop three estimators of the target population causal effects. For sign-generalization — assessing whether the direction of causal effects is generalizable, we propose a novel multiple-testing procedure under weaker assumptions than those required for the effect-generalization. We illustrate our proposed methodologies through three applications covering field, survey, and lab experiments.

Location: Zoom
October 23, 2020 - Dr. Erin Hartman (Harrington Fellow)
The University of Texas at Austin, Department of Information, Risk, and Operations Management
Zoom, 2:00 to 3:00 PM
Read more:
SDS Seminar Series