A study last year by Ayhan Kose of the IMF, Christopher Otrok of the University of Virginia and Eswar Prasad of Cornell University gave some support to this idea.

Cornell University sociologists used language software to detect the presence of positive words in 509 million tweets from 2.4 million users in 84 different countries over a two-year period.

Gross, a biologist at the University of Verginia, and Norman Levitt, a mathematician at Rutgers University; and The Demon Haunted World, by Car Sagan of Cornell University.