@techreport{NBERw12935,
 title = "Is Well-being U-Shaped over the Life Cycle?",
 author = "David G. Blanchflower and Andrew Oswald",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "12935",
 year = "2007",
 month = "February",
 URL = "http://www.nber.org/papers/w12935",
}