Some Questions Benefit from Group Discussion. Others Don’t.

Research on the concept of “collective intelligence” has shown that in many cases, groups tend to come up with more accurate estimates after discussing a question than individual experts do on their own. However, a new study found that while this holds true for quantitative questions — i.e., “How long will the project take?” — groups are actually less accurate than individuals when it comes to yes/no questions, such as, “Will the project be done before the deadline?”.