Why group decisions often fail and how to fix them

How can groups make good decisions? | Mariano Sigman and Dan Ariely · 8:37 · Video: TED · Watch at the source

In short: Group dynamics can lead to disastrous outcomes, but they also hold the potential for collective wisdom. Neuroscientist Mariano Sigman explores how we interact to reach conclusions and what that means for the future of democracy.

Neuroscientist Mariano Sigman and colleague Dan Ariely conducted experiments with live crowds worldwide to study how human interaction shapes decision-making. Their research suggests that collective wisdom is most effectively harnessed when small groups are given the opportunity to discuss and deliberate together.

The findings have significant implications for political systems. By understanding the mechanics of how groups reach conclusions, Sigman argues we can develop new methods to construct healthier, less polarized democracies and potentially improve the way we vote.

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