"One would expect that, when a group of bright people come together to make a decision or analyze a problem, their combined abilities would result in a group intelligence greater than that of any individual. Instead, most groups experience exactly the opposite--inverse intelligence. The resulting group intelligence is significantly less than that of any individual of the individuals within it." (p. 80)
Minnesota author Carol Bly died a few years back. I regret I wasn't aware of her when she was here in Rochester to speak on various occasions.