Cited by 268Misinformation and Its ImpactsSocial and Intergroup PsychologyTerrorism, Counterterrorism, and Political Violence

The DOI matches its Crossref record; 60 of the 60 references it cites were found in a registry or an index; none of the 33 sources its claims cite is checked for support yet.

Exposure to intergroup conspiracy theories promotes prejudice which spreads across groups

Open access
Jolley, Daniel, Meleady, Rose, Douglas, Karen M.·2020·British Journal of Psychology

Abstract

This research experimentally examined the effects of exposure to intergroup conspiracy theories on prejudice and discrimination. Study 1 ( N = 166) demonstrated that exposure to conspiracy theories concerning immigrants to Britain from the European Union (vs. anti‐conspiracy material or a control) exacerbated prejudice towards this group. Study 2 ( N = 173) found the same effect in a different intergroup context – exposure to conspiracy theories about Jewish people (vs. anti‐conspiracy material or a control) increased prejudice towards this group and reduced participants’ willingness to vote for a Jewish political candidate. Finally, Study 3 ( N = 114) demonstrated that exposure to conspiracy theories about Jewish people not only increased prejudice towards this group but was indirectly associated with increased prejudice towards a number of secondary outgroups (e.g., Asians, Arabs, Americans, Irish, Australians). The current research suggests that conspiracy theories may have potentially damaging and widespread consequences for intergroup relations.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

Three experiments found that exposure to intergroup conspiracy theories increased prejudice toward the targeted outgroup and, in one study, discrimination; Study 3 also found indirect generalization of prejudice to unrelated secondary outgroups. Effects were generally small and mainly affective rather than cognitive.

Key findings

  • Study 1 (N = 166): exposure to immigrant conspiracy theories increased prejudice toward immigrants (pro-conspiracy M = 3.98, SD = 1.00) compared with anti-conspiracy (M = 3.56, SD = 0.96, p = .023, d = .43) and control (M = 3.53, SD = 0.88, p = .016, d = .50); omnibus F(2, 163) = 3.68, p = .027, η² = .04.
  • Study 2 (N = 173): exposure to Jewish conspiracy theories increased affective prejudice toward Jewish people (M = 3.32, SD = 0.94) versus anti-conspiracy (M = 2.80, SD = 1.00, p = .008, d = .54) and control (M = 2.91, SD = 1.15, p = .034, d = .39); it also increased anti-Jewish voting bias (M = 2.30, SD = 1.60) versus anti-conspiracy (M = 1.66, SD = 0.98, p = .013, d = .48), with mediation via prejudice. No differences emerged for stereotypes or dehumanization (p > .05).
  • Study 3 (N = 114): exposure to Jewish conspiracy theories increased prejudice toward Jewish people (M = 38.25, SD = 21.14) versus control (M = 31.15, SD = 16.10), t(112) = −2.04, p = .044, d = .38. Indirect effects through Jewish prejudice were significant for all 12 secondary outgroups, e.g., Asians (−5.50, SE = 2.68), Arabs (−4.83, SE = 2.34), Irish (−4.75, SE = 2.40), Americans (−4.53, SE = 2.56), Australians (−4.43, SE = 2.22).

Methods

  • Three between-subjects online experiments recruited UK residents via Prolific Academic. Final analyzed samples: Study 1 N = 166 (pro-conspiracy n = 50, anti-conspiracy n = 57, control n = 59); Study 2 N = 173 (pro n = 57, anti n = 56, control n = 60); Study 3 N = 114 (pro n = 52, control n = 62). Exclusions included failed attention screens, reading time under 30 s, and, in Studies 2–3, Jewish origin.
  • Participants read pro-conspiracy, anti-conspiracy, or no-information control material. Study 1 concerned immigrants and terrorism; Studies 2–3 concerned Jewish people and 9/11. Measures included conspiracy belief manipulation checks, semantic-differential prejudice, feeling thermometers, stereotypes, dehumanization, voting intention, and prejudice toward secondary outgroups.
  • Analyses used ANOVAs and pairwise comparisons, plus mediation with Hayes’ PROCESS Model 4 and 5,000 bootstrapped resamples.

Limitations

  • The paper states that effects were stronger for affective than cognitive prejudice; Study 2 found no changes in stereotypes or dehumanization. It also notes that discrimination was measured as behavioral intention, not actual behavior, and that manipulation-check items may reflect general fear of foreigners rather than genuine conspiracy beliefs.
  • The paper states that long-term effects were not examined, and mechanisms and moderators remain untested.
  • Evident from the text: samples were UK Prolific participants rather than representative populations; effects were small (η² = .04–.05; d = .38–.54); Study 3 removed the anti-conspiracy condition; and secondary-outgroup effects were indirect only, with no direct effects reported.

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

Integrity signals

Registry

Crossref · 10.1111/bjop.12385

Cites

60 of 60 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

0 of 33 cited sources checked · 0 supported · 0 flagged

Show all 50 claims

  • It may state two separate claims as one. 19
  • The quote only partly states this claim. 1
  • Probably not a substantial claim. 20
33 of 33
  • The paper relies on this without support.

    The pro-conspiracy articles increased prejudice because of their conspiracy content rather than merely their negative portrayal of the outgroup.

    “The pro‐conspiracy article began by arguing that there are many reasons to be suspicious of immigrants. The article then continued to provide specific examples such as immigrants have been found to be working on behalf of terrorist organizations.”
    “The anti‐conspiracy article was similar in content and length to the pro‐conspiracy article but differed by arguing that there are few reasons to be suspicious of immigrants being involved with terrorist organizations.”
  • The paper relies on this without support.

    In the mediation analysis, increases in prejudice towards Jewish people caused the increase in anti-Jewish voting bias.

    “A mediation analysis was then conducted to examine whether the effect of exposure to conspiracy theories on anti‐Jewish discrimination could be explained by increased prejudice towards this group.”
  • The paper relies on this without support.

    The samples of UK residents recruited via Prolific Academic are representative enough to generalize the effects to the wider UK population.

    “Participants were all residents of the United Kingdom and received a small fee in exchange for their participation.”
  • The paper relies on this without support.

    The secondary outgroups (Americans, Irish, Australians, Asians, rich people, feminists, housewives, disabled people, elderly people, Arabs, people on benefits, and poor people) are uninvolved in the alleged Jewish conspiracy.

    “Participants then completed this same measure to indicate their feelings towards a number of other, secondary groups, specifically Americans, Irish, Australians, Asians, rich people, feminists, housewives, disabled people, elderly people, Arabs, people on benefits, and poor people (adapted from Harwood et al., 2011).”
  • The paper relies on this without support.

    The experimental exposure to conspiracy theories is analogous to real-world exposure to intergroup conspiracy theories.

    “In a between‐groups design, participants were exposed to either information that supported conspiracy theories surrounding Jewish people (pro‐conspiracy condition) or no information (control condition).”
5 of 5

Statistics recomputed

Every reported test result, recomputed from its test statistic and degrees of freedom. A result shows as not adding up only once an independent check has confirmed it.

  • ConsistentF(2, 163) = 7.5reported p = .001 · recomputed p < .001

    “F(2, 163) = 7.50, p = .001”

  • ConsistentF(2, 163) = 3.68reported p = .027 · recomputed p = .027

    “F(2, 163) = 3.68, p = .027”

  • ConsistentF(2, 170) = 21.51reported p < .001 · recomputed p < .001

    “F(2, 170) = 21.51, p < .001”

  • ConsistentF(2, 170) = 4.03reported p = .019 · recomputed p = .019

    “F(2, 170) = 4.03, p = .019”

  • ConsistentF(2, 170) = 3.29reported p = .04 · recomputed p = .040

    “F(2, 170) = 3.29, p = .040”

  • Consistentt(112) = 3.59reported p < .001 · recomputed p < .001

    “t(112) = 3.59, p < .001”

  • Consistentt(112) = -2.04reported p = .044 · recomputed p = .044

    “t(112) = −2.04, p = .044”

7 of 7

Self-check

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

Self-check results appear here once an independent check has confirmed them.

Citations

Cites

Flagged first, then by citations

Show all 58 references

Research works printed but not linked: 4

  1. Campion‐Vincent V., 2005, Rumor mills: The social impact of rumor and legend (social problems and social issues)
  2. Douglas K. M., 2015, The psychology of conspiracy
  3. Hayes A., 2013, Introduction to mediation, moderation, and conditional process analysis: A regression‐based approach (methodology in the social sciences)
  4. Stephan W. G., 2000, “The Claremont Symposium on Applied Social Psychology” Reducing prejudice and discrimination, 23

Cited by

Sorted by citations

Items 201–267 of 267

Metadata

Authors
Jolley, D., Meleady, R., & Douglas, K. M.
Affiliations
  • University of Staffordshire (GB)
  • University of East Anglia (GB)
  • University of Kent (GB)
Corresponding author
Jolley, Daniel
Venue
British Journal of Psychology
Publisher
Wiley
Published
2019-03-13
Volume
111
Issue
1
Pages
17-35
ISSN
  • 0007-1269 (ISSN-L)
  • 2044-8295
OpenAlex
W2920857031
Cited by
268
References
58
Citations by year
2026: 38 · 2025: 32 · 2024: 40 · 2023: 38 · 2022: 49 · 2021: 47 · 2020: 24
FWCI
60.26
Type
journal article
Language
en
Open access
Locations
  • British Journal of Psychology (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Repository@Nottingham (University of Nottingham) (publishedVersion, other-oa)
  • Northumbria Research Link (Northumbria University) (acceptedVersion)
  • Staffordshire Online Repository (Staffordshire University) (acceptedVersion)
  • Repository@Nottingham (University of Nottingham) (submittedVersion, cc-by-nc)
  • Kent Academic Repository (University of Kent) (submittedVersion)
  • UEA Digital Repository (University of East Anglia) (submittedVersion)
Funders
Staffordshire University
Topics
  • Social Sciences › Sociology and Political Science › Misinformation and Its Impacts
  • Social Sciences › Sociology and Political Science › Social and Intergroup Psychology
  • Social Sciences › Sociology and Political Science › Terrorism, Counterterrorism, and Political Violence
Keywords
prejudice, discrimination, intergroup relations, Jews
MeSH terms
Adolescent, Asia, Australia, European Union, Female, United Kingdom, Group Processes, Humans, Ireland, Jews, Male, Politics, Prejudice, Arabs, Emigrants and Immigrants

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