<http://schema.org/description>
"Economists at the University of Warwick have found happiness increases productivity by around 12%. Andrew Oswald, Eugenio Proto and Daniel Sgroi carried out a number of experiments to test the idea that happy employees work harder. Their study, involving over 700 participants, is the first causal evidence using randomized trials. It is due to be..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://qz.com/190659/happy-people-are-more-productive-especially-if-you-give-them-chocolate/>