http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. When people have power, they act the part. Powerful people smile less, interrupt others, and speak in a louder voice. When people do not respect the basic rules of social behavior, they lead others to believe that they have power, according to a study in the current Social Psychological and Personality Science. http://medicalxpress.com/news/2011-05-powerful.html Psychology & Psychiatry Fri, 20 May 2011 11:10:11 EST news225108496