"We've all been involved in group decisions--and they're hard. And they often turn out badly. Why? Many blame bad decisions on 'groupthink' without a clear idea of what that term really means. Now, Nudge coauthor Cass Sunstein and leading decision-making scholar Reid Hastie shed light on the specifics of why and how group decisions go wrong--and offer tactics and lessons to help leaders avoid the pitfalls and reach better outcomes."--From publisher.