Contact: Diana Yates
University of Illinois at Urbana-Champaign
Caption: University of Illinois professor emeritus of psychology Ed Diener, a senior scientist with the Gallup Organization, led a global study of happiness.
Credit: Photo by L. Brian Stauffer, U. of I. News Bureau
Usage Restrictions: Photo may be used only with stories about the research described in the news release. Please credit: Photo by L. Brian Stauffer, U. of I. News Bureau.
Related news release: Can money buy happiness? Gallup poll asks, and the world answers