@techreport{NBERw12006,
 title = "The Effects of Cognitive and Noncognitive Abilities on Labor Market Outcomes and Social Behavior",
 author = "James J. Heckman and Jora Stixrud and Sergio Urzua",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "12006",
 year = "2006",
 month = "February",
 URL = "http://www.nber.org/papers/w12006",
}