Group Decision Making refers to the process by which multiple individuals collaborate to reach a collective choice or conclusion. This field gained formal academic attention following the publication of A Theory of Social Comparison Processes by Leon Festinger in 1954, which explored how groups influence individual judgments.

Key Research and Concepts

Irving Janis, a psychologist at Yale University, introduced the concept of groupthink in 1972. His analysis of the 1961 Bay of Pigs invasion demonstrated how cohesive groups can make poor decisions when members suppress dissent. Janis found that 70% of flawed policy decisions involved symptoms of groupthink.

Notable Phenomena

• Risky Shift - groups often make riskier decisions than individuals would alone
• Group Polarization - members' views become more extreme after discussion
• Social Loafing - individuals exert less effort in groups than working independently
• Consensus Bias - members overestimate agreement within the group

Applications

Organizations in Silicon Valley and major corporations in London, Tokyo, and Frankfurt have implemented structured decision-making protocols since the 1990s to counteract groupthink. Research from Carnegie Mellon University (2010) showed that diverse teams with clear communication frameworks made decisions 30% more accurately than homogeneous groups.

Effective group decision-making requires psychological safety, where members feel comfortable expressing unpopular opinions without fear of ridicule or punishment.

Reference:

Wikipedia reference

https://en.wikipedia.org/wiki/Group_Decision_Making