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Solution spillover: Pairing issues with ideological solutions fuels polarization.

Publication ,  Journal Article
Kafka, AM; Campbell, TH; Kay, AC
Published in: Proceedings of the National Academy of Sciences of the United States of America
August 2025

Recent research has focused on understanding ideological and affective political polarization in the United States; however, the polarization of issue salience-defined as personal beliefs about how important or concerning an issue is, and how much attention or priority it deserves-has garnered less attention, especially regarding its underlying causes. We propose that issue salience polarization, particularly that of ideologically neutral issues, is driven in part by two psychological processes: solution aversion (denying problem severity when solutions are introduced that conflict with political beliefs) and solution attraction (exaggerating problem severity when solutions are introduced that align with political beliefs). If this is so, we should be able to observe issues that are nonpolarized at baseline become suddenly polarized when paired with solutions that are consistent with a specific ideological position (liberal or conservative). Consistent with this prediction, four experimental studies demonstrate the emergence of issue salience polarization arising from solution aversion and solution attraction (Studies 1-4). Results also demonstrate support for the role of zero-sum beliefs, or the belief that one political party's gains must come at the expense of the other party, in driving this process (Study 3).

Duke Scholars

Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

August 2025

Volume

122

Issue

33

Start / End Page

e2512064122
 

Citation

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Chicago
ICMJE
MLA
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Kafka, A. M., Campbell, T. H., & Kay, A. C. (2025). Solution spillover: Pairing issues with ideological solutions fuels polarization. Proceedings of the National Academy of Sciences of the United States of America, 122(33), e2512064122. https://doi.org/10.1073/pnas.2512064122
Kafka, Adrienne M., Troy H. Campbell, and Aaron C. Kay. “Solution spillover: Pairing issues with ideological solutions fuels polarization.Proceedings of the National Academy of Sciences of the United States of America 122, no. 33 (August 2025): e2512064122. https://doi.org/10.1073/pnas.2512064122.
Kafka AM, Campbell TH, Kay AC. Solution spillover: Pairing issues with ideological solutions fuels polarization. Proceedings of the National Academy of Sciences of the United States of America. 2025 Aug;122(33):e2512064122.
Kafka, Adrienne M., et al. “Solution spillover: Pairing issues with ideological solutions fuels polarization.Proceedings of the National Academy of Sciences of the United States of America, vol. 122, no. 33, Aug. 2025, p. e2512064122. Epmc, doi:10.1073/pnas.2512064122.
Kafka AM, Campbell TH, Kay AC. Solution spillover: Pairing issues with ideological solutions fuels polarization. Proceedings of the National Academy of Sciences of the United States of America. 2025 Aug;122(33):e2512064122.
Journal cover image

Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

August 2025

Volume

122

Issue

33

Start / End Page

e2512064122