Manual Individual and Group Decision Making: Current Issues

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Individual and group decision making : current issues : Sessions on decision making : 98th Annual convention : Revised and expanded papers.

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Comparing groups versus individuals in decision making: a systematic review protocol

Year 1 1 2 15 Language English. Displaying Editions 1 - 10 out of Wiley, New York. Google Scholar. Barrett, C. Aggregation of fuzzy preferences. Kacprzyk and M. Fedrizzi, Eds. CrossRef Google Scholar. On the structure of fuzzy social welfare functions. Fuzzy Sets and Systems , 19, 1— On choosing rationally when preferences are fuzzy. Fuzzy Sets and Systems , 34, — Rationality and aggregation of preferences in an ordinally fuzzy framework. Fuzzy Sets and Systems , 49, 9— Basu, K, Deb, R.

Fuzzy Sets and Systems , 45, 45— Bezdek, J. Spillman, R. A fuzzy relation space for group decision theory, Fuzzy Sets and Systems , 1, — Fuzzy relation space for group decision theory: An application, Fuzzy Sets and Systems 2, 5— Blin, J. Fuzzy relations in group decision theory, J. Fuzzy sets and social choice, J. Carlsson, Ch. Consensus in distributed soft environments, Europ. Delgado, M. On aggregation operations of linguistic labels, Int.

Dip109GB Individual and Group Decisions

Fedrizzi, M. On measuring consensus in the setting of fuzzy preference relations. Roubens Eds. Consensus degrees under fuzzy majorities and preferences using OWA ordered weighted average operators, Proc. I, pp. Consensus degrees under fuzzy majorities and fuzzy preferences using OWA ordered weighted average operators, Control and Cybernetics , 22, 71— MathSciNet Google Scholar. How different are social choice functions: a rough sets approach, Quality and Quantity , 30, 87— An interactive multi-user decision support system for consensus reaching processes using fuzzy logic with linguistic quantifiers, Decision Support Systems , 4, — Fishburn, P.

Multiperson decision making: a selective review.

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Fedrizzi Eds. Gibbard A. Manipulation of schemes that mixvoting with chance, Econometrica , 45, — Herrera, F. A model of consensus in group decision making under linguistic assessments, Fuzzy Sets and Systems , 78, 73— On group decision making under linguistic preferences and fuzzy linguistic quantifiers.

Bouchon-Meunier, R. Yager and L. Zadeh Eds. Intriligator, M. A probabilistic model of social choice, Review of Economic Studies , 40, — Probabilistic models of choice, Mathematical Social Sciences , 2, — Groupthink is a tendency to avoid a critical evaluation of ideas the group favors. Iriving Janis, author of a book called Victims of Groupthink , explained that groupthink is characterized by eight symptoms:.

Managing Group Decision Making | Boundless Management

Sources: Adapted and expanded from Janis, I. Victims of groupthink. Decision failures: Why they occur and how to prevent them. Academy of Management Executive , 5 , 23— Nominal Group Technique NGT was developed to help with group decision making by ensuring that all members participate fully. NGT is not a technique to be used routinely at all meetings. Rather, it is used to structure group meetings when members are grappling with problem solving or idea generation. It follows four steps. First, each member of the group begins by independently and silently writing down ideas.

Second, the group goes in order around the room to gather all the ideas that were generated.

Advantages and Disadvantages of Group Decision Making

This process continues until all the ideas are shared. Third, a discussion takes place around each idea, and members ask for and give clarification and make evaluative statements. Finally, group members vote for their favorite ideas by using ranking or rating techniques. Following the four-step NGT helps to ensure that all members participate fully, and it avoids group decision-making problems such as groupthink. Delphi Technique is unique because it is a group process using written responses to a series of questionnaires instead of physically bringing individuals together to make a decision.

The first questionnaire asks individuals to respond to a broad question such as stating the problem, outlining objectives, or proposing solutions. Each subsequent questionnaire is built from the information gathered in the previous one. The process ends when the group reaches a consensus. Facilitators can decide whether to keep responses anonymous. This process is often used to generate best practices from experts.


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For example, Purdue University Professor Michael Campion used this process when he was editor of the research journal Personnel Psychology and wanted to determine the qualities that distinguished a good research article. Using the Delphi technique, he was able to gather responses from hundreds of top researchers from around the world and distill them into a checklist of criteria that he could use to evaluate articles submitted to his journal, all without ever having to leave his office.

Majority rule refers to a decision-making rule in which each member of the group is given a single vote and the option receiving the greatest number of votes is selected. This technique has remained popular, perhaps due to its simplicity, speed, ease of use, and representational fairness. Research also supports majority rule as an effective decision-making technique. However, those who did not vote in favor of the decision will be less likely to support it.


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Consensus is another decision-making rule that groups may use when the goal is to gain support for an idea or plan of action. While consensus tends to require more time, it may make sense when support is needed to enact the plan. The process works by discussing the issues at hand, generating a proposal, calling for consensus, and discussing any concerns. If concerns still exist, the proposal is modified to accommodate them.

These steps are repeated until consensus is reached. Thus, this decision-making rule is inclusive, participatory, cooperative, and democratic. Research shows that consensus can lead to better accuracy and it helps members feel greater satisfaction with decisions. However, groups take longer with this approach, and if consensus cannot be reached, members tend to become frustrated. Doctors routinely perform postmortems to understand what went wrong with a patient who has died. The idea is for everyone to learn from the unfortunate outcome so that future patients will not meet a similar fate.

But what if you could avoid a horrible outcome before it happened by proactively identifying project risks? Gary Klein, an expert on decision making in fast-paced, uncertain, complex, and critical environments, recommends that decision makers follow a five-step process to increase their chances of success. For example, in a premortem session at a Fortune company, an executive imagined that a potential billion-dollar environmental sustainability project might fail because the CEO had retired.

Sources: Breen, B. Fast Company , ; Klein, G.