[Revised entry by Gabriella Pigozzi on June 9, 2025.
Changes to: Main text, Bibliography]
Groups often need to reach decisions and decisions can be complex, involving the assessment of several related issues. For example, in a university a hiring committee typically decides on a candidate on the basis of her teaching and research qualities. A city council confronted with the decision of building a bridge, may ask its members to state whether they are favorable or not and, at the same time, to provide reasons for their position (like economical and environmental impacts, or expenditure considerations). Lastly, jurors are required…

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