If Brainstorming Doesn’t Work, Why Does It Persist?
Indeed, after all these years of evidence that conventional brainstorming groups don’t work, they remain as popular as ever. Participants in brainstorming sessions usually believe that their group performed much better than it actually did, which points to a valuable reason for their continued popularity—group brainstorming makes people feel attached. A worthy goal, so long as we understand that social glue, as opposed to creativity, is the principal benefit.
Via Quiet: The Power of Introverts in a World That Can't Stop Talking.