TY - JOUR AU - Iyigun,Murat AU - Rodrik,Dani TI - On the Efficacy of Reforms: Policy Tinkering, Institutional Change, and Entrepreneurship JF - National Bureau of Economic Research Working Paper Series VL - No. 10455 PY - 2004 Y2 - April 2004 UR - http://www.nber.org/papers/w10455 L1 - http://www.nber.org/papers/w10455.pdf N1 - Author contact info: Murat Iyigun Department of Economics University of Colorado Campus Box 256 Boulder, CO 80309 Tel: 303-492-6653 Fax: 303-492-8622 E-Mail: murat.iyigun@colorado.edu Dani Rodrik John F. Kennedy School of Government Harvard University 79 JFK Street Cambridge, MA 02138 Tel: 617/495-9454 Fax: 617/496-5747 E-Mail: dani_rodrik@harvard.edu AB - We analyze the interplay of policy reform and entrepreneurship in a model where investment decisions and policy outcomes are both subject to uncertainty. The production costs of non-traditional activities are unknown and can only be discovered by entrepreneurs who make sunk investments. The policy maker has access to two strategies: policy tinkering,' which corresponds to a new draw from a pre-existing policy regime, and institutional reform,' which corresponds to a draw from a different regime and imposes an adjustment cost on incumbent firms. Tinkering and institutional reform both have their respective advantages. Institutional reforms work best in settings where entrepreneurial activity is weak, while it is likely to produce disappointing outcomes where the cost discovery process is vibrant. We present cross-country evidence that strongly supports such a conditional relationship. ER -