An information sampling explanation for the in-group heterogeneity effect

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• dc.contributor.author Konovalova, Elizaveta
• dc.contributor.author Le Mens, Gaël
• dc.date.accessioned 2021-10-08T11:06:37Z
• dc.date.available 2021-10-08T11:06:37Z
• dc.date.issued 2020
• dc.description Includes supplementary material: replication file.
• dc.description.abstract People often perceive their in-groups as more heterogeneous than their out-groups. We propose an information sampling explanation for this in-group heterogeneity effect. We note that people frequently obtain larger samples of information about in-groups than about out-groups. Using computer simulations, we show that this asymmetry in sample sizes implies the in-group heterogeneity effect under a wide range of assumptions about how experience affects perceived variability. This is the case even when perceived variability is the outcome of rational information processing, implying that the structure of the environment is sufficient to explain the emergence of the in-group heterogeneity effect. A key assumption of our explanation is that perceived group variability depends on the size of the sample observed about this group. We provide evidence in support for this assumption in two experiments. Our results considerably expand the scope and relevance of a prior sampling explanation proposed by Linville, Fischer, and Salovey (1989). They also complement other explanations that proposed that information about in-groups and out-groups is processed differently.
• dc.description.sponsorship Le Mens benefited from financial support from Southern Denmark University and Grants PSI2013-41909-P, #AEI/FEDER UE-PSI2016-75353, Ramon y Cajal Fellowship (RYC-2014-15035) from the Spanish MINECO, Grant IN[15]_EFG_ECO_2281 from the BBVA Foundation and ERC Consolidator #772268 from the European Commission. E. Konovalova was funded by Spanish MINECO Grant PSI2013-41909-P to G. Le Mens.
• dc.format.mimetype application/pdf
• dc.identifier.citation Konovalova E, Le Mens G. An information sampling explanation for the in-group heterogeneity effect. Psychological Review. 2020 Jan;127(1):47-73. DOI: 10.1037/rev0000160
• dc.identifier.doi http://dx.doi.org/10.1037/rev0000160
• dc.identifier.issn 0033-295X
• dc.identifier.uri http://hdl.handle.net/10230/48623
• dc.language.iso eng
• dc.publisher American Psychological Association (APA)
• dc.relation.ispartof Psychological Review. 2020 Jan;127(1):47-73
• dc.relation.isreferencedby https://osf.io/5wauf/
• dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/772268
• dc.relation.projectID info:eu-repo/grantAgreement/ES/1PE/PSI2013-41909-P
• dc.relation.projectID info:eu-repo/grantAgreement/ES/1PE/PSI2016‐75353‐P
• dc.rights © American Psychological Association (APA)http://dx.doi.org/10.1037/rev0000160. This article may not exactly replicate the final version published in the APA journal. It is not the copy of record.
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.subject.keyword Information sampling
• dc.subject.keyword Judgment bias
• dc.subject.keyword Perception of variability
• dc.subject.keyword Rational analysis
• dc.title An information sampling explanation for the in-group heterogeneity effect
• dc.type info:eu-repo/semantics/article
• dc.type.version info:eu-repo/semantics/acceptedVersion