How a Seemingly Innocuous and Intuitive Methodological Choice Confused a Generation of Research on Policy Responsiveness

Peter K. Enns

Sociological Science May 4, 2026
10.15195/v13.a21

The finding that government policy is, “virtually unrelated to the desires of the low- and middle-income citizens” (Gilens 2005:789), is one of the most influential social science results of the last two decades. This article offers a new perspective on this finding. I show that the seemingly innocuous decision to restrict analyses to data where different income groups’ policy support differs (i.e., a preference gap exists) introduced Simpson’s paradox, leading to misleading conclusions about whose preferences policy reflects. The same concerns apply to analyses of responsiveness to men and women and to partisan groups. I also present evidence that other common approaches for evaluating policy responsiveness can produce equally misleading conclusions. These findings suggest a need to reconsider conventional wisdom about political influence. The conclusion offers methodological recommendations and discusses implications related to understanding social and economic inequality and support for populist candidates.
Creative Commons LicenseThis work is licensed under a Creative Commons Attribution 4.0 International License.


Peter K. Enns: Professor, Department of Government; Professor, Brooks School of Public Policy; Robert S. Harrison Director, Cornell Center for Social Sciences, Cornell University; Co-founder and Chief Data Scientist, Verasight.
E-mail: peterenns@cornell.edu.

Acknowledgments: I thank Gabrielle Sorresso and Claudia Miner for outstanding research assistance, David Bateman, Dan Butler, Scott Desposato, Derek Epp, Chris Faricy, Marty Gilens, Luke Keele, Doug Kriner, Neil Malhotra, Henry Mo, Jacob Montgomery, Tom Pepinsky, Bryn Rosenfeld, Kim Weeden, Ariel White, and Chris Wlezien for extremely helpful comments and feedback, Stephen Parry and Kenneth Tyler Wilcox from Cornell’s Statistical Consulting Unit, and the Cornell Center for Social Sciences for verifying that the data and replication code replicate the numerical results reported in the main text and online supplement to this article. Previous versions of this article were presented at the University of California San Diego Methods Workshop, the 2024 Annual Meeting of the American Political Science Association, the 2024 Annual Meeting of the Society for Political Methodology, the 25th Anniversary of the American Politics Research Group (APRG) George Rabinowitz Seminar at the University of North Carolina at Chapel Hill, and Introduction to Public Policy (PUBPOL 2301), Public Opinion (GOVT 6461), Time Series Analysis (GOVT 6089), and Comparative Political Behavior (GOVT 6594) courses at Cornell University.


Supplemental Materials

Reproducibility Package: Data and code to reproduce all numerical results are available here: https://doi.org/10.7910/DVN/9QADPC.


  • Citation: Enns, K. Peter. 2026. “How a Seemingly Innocuous and Intuitive Methodological Choice Confused a Generation of Research on Policy Responsiveness” Sociological Science 13: 528-564.
  • Received: December 15, 2025
  • Accepted: February 25, 2026
  • Editors: Arnout van de Rijt, Bart Bonikowski
  • DOI: 10.15195/v13.a21


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