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HeuristicsThe Foundations of Adaptive Behavior$
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Gerd Gigerenzer, Ralph Hertwig, and Thorsten Pachur

Print publication date: 2011

Print ISBN-13: 9780199744282

Published to Oxford Scholarship Online: May 2011

DOI: 10.1093/acprof:oso/9780199744282.001.0001

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The Use of Recognition in Group Decision-Making

The Use of Recognition in Group Decision-Making

Chapter:
(p.562) Chapter 27 The Use of Recognition in Group Decision-Making
Source:
Heuristics
Author(s):

Torsten Reimer

Konstantinos V. Katsikopoulos

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199744282.003.0027

Goldstein and Gigerenzer (2002) [Models of ecological rationality: The recognition heuristic. Psychological Review, 109 (1), 75–90] found evidence for the use of the recognition heuristic. For example, if an individual recognizes only one of two cities, they tend to infer that the recognized city has a larger population. A prediction that follows is that of the less-is-more effect: Recognizing fewer cities leads, under certain conditions, to more accurate inferences than recognizing more cities. We extend the recognition heuristic to group decision making by developing majority and lexicographic models of how recognition information is used by groups. The chapter formally shows when the less-is-more effect is predicted in groups and the chapter presents a study where three-member groups performed the population comparison task. Several aspects of the data indicate that members who can use the recognition heuristic are, not in all but in most cases, more influential in the group decision process than members who cannot use the heuristic. The chapter also states the less-is-more effect and found that models assuming that members who can use the recognition heuristic are more influential better predict when the effect occurs.

Keywords:   recognition heuristic, less-is-more effect, majority rule, lexicographic model, group deicision making

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