TY - JOUR AU - Frank,Richard AU - Lamiraud,Karine TI - Choice, Price Competition and Complexity in Markets for Health Insurance JF - National Bureau of Economic Research Working Paper Series VL - No. 13817 PY - 2008 Y2 - February 2008 UR - http://www.nber.org/papers/w13817 L1 - http://www.nber.org/papers/w13817.pdf N1 - Author contact info: Richard Frank Department of Health Care Policy Harvard Medical School 180 Longwood Avenue Boston, MA 02115 Tel: 617/432-0178 Fax: 617/432-1219 E-Mail: frank@hcp.med.harvard.edu Karine Lamiraud University of Lausanne Faculty of Business and Economics Institute of Health Economics and Management E-Mail: lamiraud@essec.edu AB - The United States and other nations rely on consumer choice and price competition among competing health plans to allocate resources in the health sector. A great deal of research has examined the efficiency consequences of adverse selection in health insurance markets, less attention has been devoted to other aspects of consumer choice. The nation of Switzerland offers a unique opportunity to study price competition in health insurance markets. Switzerland regulates health insurance markets with the aim of minimizing adverse selection and encouraging strong price competition. We examine consumer responses to price differences in local markets and the degree of price variation in local markets. Using both survey data and observations on local markets we obtain evidence suggesting that as the number of choices offered to individuals grow their willingness to switch plans given a set of price dispersion differences declines allowing large price differences for relatively homogeneous products to persist. We consider explanations for this phenomenon from economics and psychology. ER -