His research is in behavioral economics (which incorporates ideas and methods from psychology into economic analysis) and genoeconomics (which incorporates genetic data into economics). Some current research topics include understanding errors people make in statistical reasoning; exploring how best to use survey measures of subjective well-being (such as happiness and life satisfaction) to track national well-being and evaluate policies; and identifying genetic variants associated with outcomes such as educational attainment and subjective well-being. Other ongoing work addresses how economic behavior relates to cognitive ability and social identity (ethnicity, race, gender, and religion). Dan received his Ph.D. in Economics from Harvard University in 2006.