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Post-decision consolidation in large group decision-making
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2011 (English)In: Scandinavian Journal of Psychology, ISSN 0036-5564, E-ISSN 1467-9450, Vol. 52, no 4, 320-328 p.Article in journal (Refereed) Published
Abstract [en]

Decision-makers tend to change the psychological attractiveness of decision alternatives in favour of their own preferred alternative after the decision is made. In two experiments, the present research examined whether such decision consolidation occurs also among individual group members in a large group decision-making situation. High-school students were presented with a decision scenario on an important issue in their school. The final decision was made by in-group authority, out-group authority or by majority after a ballot voting. Results showed that individual members of large groups changed the attractiveness of their preferred alternative from a pre- to a post decision phase, that these consolidation effects increased when decisions were made by in-group members and when participants identified strongly with their school. Implications of the findings for understanding of group behavior and subgroup relations are discussed.

Place, publisher, year, edition, pages
John Wiley and Sons , 2011. Vol. 52, no 4, 320-328 p.
Keyword [en]
group decisions, decision consolidation, decision-making procedure, group identification
National Category
Psychology
Research subject
Psychology
Identifiers
URN: urn:nbn:se:sh:diva-13410DOI: 10.1111/j.1467-9450.2011.00878.xISI: 000292743900002ScopusID: 2-s2.0-79960369438OAI: oai:DiVA.org:sh-13410DiVA: diva2:457945
Available from: 2011-08-15 Created: 2011-11-21 Last updated: 2015-05-18Bibliographically approved
In thesis
1. Social and cognitive biases in large group decision settings
Open this publication in new window or tab >>Social and cognitive biases in large group decision settings
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The present thesis consists of three studies on the effects of group membership in large group decisions. The overall aim was to contribute to understanding how individuals react when decisions are made in large groups. We explored consequences of procedural justice concerns within such groups. In Study I we investigated how different decision procedures and issue importance affect perceptions of others who agree and disagree with the individual on a potentially important issue.  Individuals attributed more positive reasons for attitudes of those who agree as opposed to disagree with themselves, whereas disagreers were attributed more negative reasons. The asymmetry was moderated by decision form, and issue importance. The attitudes concerned attitudes towards potential new policies. In Study II we investigated differences in participants’ perceptions of others depending on own position towards the new policy. Challengers of the status quo advocating a change in the existing policy, were more biased when judging others than were defenders of the status quo. This suggests that challengers are less tolerant of defenders’ point of view. This effect was not affected by perceptions of minority status among the challengers. In Study III we looked at individual group members’ cognitive restructuring of a preferred decision alternative, and how it differs between decision conditions when the decision-maker is affiliated to own ingroup or not. Results showed that individuals restructure the attractiveness of their preferred alternative in group decisions similarly to what has been previously found in individual decision-making. The magnitude of restructuring was greatest when ingroup members decided for the group. However, this effect was moderated by identification with the ingroup, such that those who identified themselves with the ingroup restructured their preferred alternative more when ingroup members decided as opposed to when outgroup authorities decided.

Place, publisher, year, edition, pages
Stockholm: Department of Psychology, Stockholm University, 2011. 65 p.
Keyword
large group decision-making, social identity, procedural justice, intergroup biases, attitudes, status quo position, cognitive restructuring, post-decision consolidation
National Category
Psychology
Research subject
Psychology
Identifiers
urn:nbn:se:sh:diva-13411 (URN)978-91-7447-320-9 (ISBN)
Public defence
(English)
Note
At the time of doctoral defense, paper 2 was submitted.Available from: 2011-11-21 Created: 2011-11-21 Last updated: 2011-11-21Bibliographically approved

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Bäck, Emma A.
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