New York times, 17.01.2015 | Matt Richtel

„As people gain authority, their voice quality changes, becoming steadier in pitch, more varied in volume and less strained. […]‘The easiest way to exert authority is by speaking more loudly. But that can just come across as yelling, which can turn people off,’ said Adam Galinsky, a professor at the Columbia Business School, who wrote the paper along with researchers from San Diego State University. ‘It’s not the volume, but the ability to control it’.”

Link zum Artikel: http://www.nytimes.com/2015/01/18/business/in-charge-and-sounding-the-part.html?_r=0