PreprintCited by 242Misinformation and Its ImpactsElectoral Systems and Political ParticipationMedia Influence and Politics

The DOI matches its Crossref record; 75 of the 75 references it cites were found in a registry or an index; 8 of the 30 sources its claims cite were checked for support.

Partisan Gaps in Political Information and Information-Seeking Behavior: Motivated Reasoning or Cheerleading?

Open access
Peterson, Erik, Iyengar, Shanto·2019·American Journal of Political Science

Abstract

Do partisan disagreements over politically-relevant facts, and preferences for the information sources from which to obtain them, represent genuine differences of opinion or insincere cheerleading? The answer to this question is crucial for understanding the scope of partisan polarization. We test between these alternatives with experiments that offer incentives for correct survey responses and allow respondents to search for information before answering each question. We find that partisan cheerleading inflates divides in factual information, but only modestly. Incentives have no impact on partisan divides in information search; these divides are no different from those that occur outside the survey context when we examine web browsing data from the same respondents. Overall, our findings support the motivated reasoning interpretation of misinformation; partisans seek out information with congenial slant and sincerely adopt inaccurate beliefs that cast their party in a favorable light.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

This paper tests whether partisan gaps in political facts and news-source preferences reflect sincere motivated reasoning or insincere cheerleading. Across two incentivized survey experiments plus linked web-browsing data, it finds incentives modestly reduce factual divides but do not affect information search, supporting motivated reasoning.

Key findings

  • Incentives reduced the partisan information divide but did not eliminate it: the baseline divide was .32, the Democrat × incentive interaction was -0.10, and a .22 divide remained among incentivized respondents; roughly 60–70% of the initial divide persisted.
  • Among respondents certain of their answers, the remaining incentivized divide was .27 (95% CI [0.24, 0.30]); among confidently misinformed respondents, the remaining gap was .13 (95% CI [0.11, 0.15]).
  • Incentives had no effect on news choice: the estimated effect on selecting a co-partisan source was -0.003 (95% CI [-0.03, 0.02]), with similarly null effects for expert, mainstream, and out-partisan sources.
  • Survey news choices corresponded with real-world browsing: the correlation between survey and behavioral media slant was .58, and partisan divides in media choice were similar across unincentivized survey (1.24 SD), incentivized survey (1.30 SD), and real-world media diet (1.36 SD).

Methods

  • Two YouGov surveys: September 2018 (N = 1,000) and March 2019 (N = 1,700), pooled; 954 respondents completed both, and 855 had linked desktop web-browsing data.
  • Respondents were randomly assigned to receive $0.50 per correct answer on a five-item political information battery; before each question they chose one news source from left-leaning, right-leaning, expert, and two mainstream options, then answered and reported confidence.
  • Main analysis used pooled models with item fixed effects, Democrat × incentive treatment interactions, and standard errors clustered by respondent; news-choice models regressed source selection on incentive treatment and item fixed effects; web-browsing comparison used Bakshy et al. (2015) alignment scores.

Limitations

  • The paper states it cannot distinguish motivated reasoning from differential beliefs about source credibility or evidence quality, cannot rule out that psychic rewards for cheerleading exceed the monetary incentives, and cannot make claims about the realism of its incentive manipulations.
  • The paper notes the web-tracking measure captures only desktop browsing, missing mobile web and cable television, and that the unweighted sample is older and more highly educated than a nationally representative sample, though weighted robustness checks are similar.
  • The text also makes evident that the information items were selected for intense partisan disagreement, that respondents had no “Don’t know” option, and that demand effects or post-treatment concerns around response certainty are possible, though the authors report no detectable incentive effect on certainty.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.31235/osf.io/pmn7h

Cites

75 of 75 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

8 of 30 cited sources checked · 5 supported · 0 flagged · accuracy not yet measured

Show all 82 claims

  • Probably not a substantial claim. 29
  • It may state two separate claims as one. 27
49 of 49
  • The paper relies on this without support.

    The partisan leanings of the news sources (MSNBC/Huffington Post as left-leaning, Fox News/Breitbart as right-leaning, CNN/New York Times as mainstream) are as categorized.

    “In each case, respondents could choose to read information from one left-leaning source (i.e., MSNBC or Hu ngton Post), one right-leaning source (i.e., Fox News or Breitbart), one source with specialized expertise (e.g., excerpts from a Bureau of Labor Statistics press release in the case of a question about the unemployment rate), or from a pair of mainstream news sources (i.e., CNN, New York Tim”
  • The authors state this as an assumption.

    Comprehension of information provided by expert sources requires greater effort.

    “On the assumption that comprehension of information provided by expert sources requires greater e↵ort”
  • The authors state this as an assumption.

    In the main text comparison, visits to CNN and the New York Times are considered neutral from the perspective of partisans by giving them a similar code to the expert sources.

    “In the comparison between survey-based and real-world news choice presented in the main text, we consider visits to CNN and the New York Times to be neutral, from the perspective of partisans, by giving them a similar code to the expert sources.”
  • The paper relies on this without support.

    In public perceptions of perceived slant and audience partisanship, the mainstream outlets CNN and the New York Times appear similar to left-leaning news sources such as Huffington Post and MSNBC.

    “We recognize that, in public perceptions of their perceived slant and the partisanship of their audiences, the mainstream outlets we consider (i.e., CNN and the New York Times) appear similar to the left-leaning news sources (i.e., Hu ngton Post and MSNBC).”
4 of 4

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Pooled sample size conflicts with wave sizes and overlap

    Minor

    Table A1 reports 1,017 and 1,754 respondents in the two waves and 1,852 unique pooled respondents. If 954 respondents appeared in both waves, those wave sizes imply 1,017 + 1,754 − 954 = 1,817 unique respondents, 35 fewer than reported.

1 of 1

Citations

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. Iyengar, Shanto, Gaurav Sood and Yphtach Lelkes. 2012. "A↵ect, Not Ideology: A Social Identity Perspective on Polarization." Public Opinion Quarterly 76(3): 405-431.

Cited by

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Metadata

Authors
Peterson, E., & Iyengar, S.
Affiliations
  • Texas A&M University (US)
  • Stanford University (US)
Corresponding author
  • Peterson, Erik
  • Iyengar, Shanto
Venue
American Journal of Political Science
Published
2019-10-29
Volume
65
Issue
1
Pages
133-147
ISSN
0092-5853 (ISSN-L)
OpenAlex
W3036144303
Cited by
241
References
72
Citations by year
2026: 48 · 2025: 51 · 2024: 26 · 2023: 48 · 2022: 49 · 2021: 17 · 2020: 2
FWCI
38.04
Type
journal article
Language
en
Open access
Locations
  • American Journal of Political Science (publishedVersion)
  • SocArXiv (OSF Preprints) (submittedVersion, cc-by)
  • SocArXiv (OSF Preprints) (submittedVersion)
Funders
William and Flora Hewlett Foundation
Topics
  • Social Sciences › Sociology and Political Science › Misinformation and Its Impacts
  • Social Sciences › Political Science and International Relations › Electoral Systems and Political Participation
  • Social Sciences › Sociology and Political Science › Media Influence and Politics
Keywords
motivated reasoning, partisan polarization, information seeking, misinformation, political information sources, survey incentives, web browsing data

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