TY - JOUR AU - Gali,Jordi AU - Lopez-Salido,J. David AU - Valles,Javier TI - Rule-of-Thumb Consumers and the Design of Interest Rate Rules JF - National Bureau of Economic Research Working Paper Series VL - No. 10392 PY - 2004 Y2 - March 2004 UR - http://www.nber.org/papers/w10392 L1 - http://www.nber.org/papers/w10392.pdf N1 - Author contact info: Jordi Gali Centre de Recerca en Economia Internacional (CREI) Ramon Trias Fargas 25 08005 Barcelona SPAIN Tel: 011-34-93-5422754 Fax: 011-34-93-5421860 E-Mail: jgali@crei.cat Javier Valles Research Dept. Banco de Espana Alcala 50 28014 Madrid SPAIN E-Mail: jvalles@presidencia.gob.es AB - We introduce rule-of-thumb consumers in an otherwise standard dynamic sticky price model, and show how their presence can change dramatically the properties of widely used interest rate rules. In particular, the existence of a unique equilibrium is no longer guaranteed by an interest rate rule that satisfies the so called Taylor principle. Our findings call for caution when using estimates of interest rate rules in order to assess the merits of monetary policy in specific historical periods. ER -