We've all heard the saying "power corrupts and absolute power corrupts absolutely."  Well, a new study from Dr. Connson Locke at the London School of Economics and Cameron Anderson from the University of California has found another downside to power: strong leaders may be poor managers because the impression of power they give off stifles the opinions of others. At a time when specialist knowledge is so valuable to the decision-making process, anything that discourages dialogue and encourages silence among team members can be damaging, the authors concluded.