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Abstract

Political polarization, a concern in many countries, is especially acrimonious in the United States (see the first box). For decades, scholars have studied polarization as an ideological matter—how strongly Democrats and Republicans diverge vis-à-vis political ideals and policy goals. Such competition among groups in the marketplace of ideas is a hallmark of a healthy democracy. But more recently, researchers have identified a second type of polarization, one focusing less on triumphs of ideas than on dominating the abhorrent supporters of the opposing party (1). This literature has produced a proliferation of insights and constructs but few interdisciplinary efforts to integrate them. We offer such an integration, pinpointing the superordinate construct of political sectarianism and identifying its three core ingredients: othering, aversion, and moralization. We then consider the causes of political sectarianism and its consequences for U.S. society—especially the threat it poses to democracy. Finally, we propose interventions for minimizing its most corrosive aspects.
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References and Notes

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Science
Volume 370Issue 651630 October 2020
Pages: 533 - 536
PubMed: 33122374

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Acknowledgments

We thank the Kellogg School of Management's Dispute Resolution Research Center and the Institute for Policy Research, both at Northwestern University. We thank S. Matz and A. Wilson for feedback on an earlier draft and T. Brader, D. Costanzo, M. DeBell, L. Harbridge-Yong, E. Groenendyk, M. Levendusky, and S. Westwood for responding to questions.

Authors

Affiliations

Eli J. Finkel
Northwestern University, Evanston, IL, USA.
Christopher A. Bail
Duke University, Durham, NC, USA.
Mina Cikara
Harvard University, Cambridge, MA, USA.
Peter H. Ditto
University of California, Irvine, Irvine, CA, USA.
Shanto Iyengar
Stanford University, Stanford, CA, USA.
Samara Klar
University of Arizona, Tuscon, AZ, USA.
Lilliana Mason
University of Maryland, College Park, MD, USA.
Mary C. McGrath
Northwestern University, Evanston, IL, USA.
Brendan Nyhan
Dartmouth College, Hanover, NH, USA.
David G. Rand
Massachusetts Institute of Technology, Cambridge, MA, USA.
Linda J. Skitka
University of Illinois at Chicago, Chicago, IL, USA.
Joshua A. Tucker
New York University, New York, NY, USA.
Jay J. Van Bavel
New York University, New York, NY, USA.
Cynthia S. Wang
Northwestern University, Evanston, IL, USA.
James N. Druckman
Northwestern University, Evanston, IL, USA.

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Volume 370|Issue 6516
30 October 2020
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