Are two heads better than one?
A recent study published in the journal Psychological Science found that two people may actually produce worse judgments, not because together they aren’t capable of making a good decision – but precisely because they are so confident that they can.
Psychologist Julie Minson, co-lead of the study, says these findings don’t negate the value of group decision-making, but they do highlight a need for caution. “If people become aware that collaboration leads to an increase in overconfidence, you can set up ways to mitigate it. Teams could be urged to consider and process each others’ inputs more thoroughly.”