Contributor(s): Professor Paul Dolan, Professor Elaine Fox, Professor Andrew Oswald, Ben Page | What does it mean to measure happiness? Can it really be measured? If so, how? Is this a more meaningful indicator of the state of the nation than GDP? Paul Dolan is professor of behavioural science at LSE. Elaine Fox is director of The Oxford Centre for Emotions and Affective Neuroscience, University of Oxford. Andrew Oswald is professor of economics at Warwick University. Ben Page is chief executive of Ipsos MORI.