How do we account for what makes us happy? Everybody wants to be happy. But how much happiness - precisely - will each life choice bring? Should I get married? Am I really going to feel happy about the career that I picked? How can we decide not only which choice is better for us, but how much it's better for us? The result of new, unique research, The Happiness Equation brings to a general readership for the first time the new science of happiness economics.

Dr nattavudh(Nick) Powdthavee is a behavioural economist at the University of York(Shortly to move to the Department of Economics, Nayang Technological University, Singapore)

Discussions of his work on the economics of happiness have appeared in over 50 major international newspapers in the past five years, including the New York Times and the Guardian, He is originally from Thailand.