The foundations of economics are in utility theory. Economists rarely discuss happiness.
Bruno S. Frey is the author of Happiness: A Revolution in Economics. Mr. Frey is Professor of Economics at the University of Zurich, Visiting Professor at the Swiss Federal Institute of Technology, and Research Director of CREMA (Center for Research in Economics, Management, and the Arts). He is co-editor of Economics and Psychology: A Promising New Cross-Disciplinary Field (MIT Press, 2007).