Does Money Illusion Matter? An Experimental Approach ERNST FEHR1 and JEAN-ROBERT TYRAN2 First Version: October 1997 This Version: February 1998 Abstract Money illusion means that people behave differently when the same objective situation is represented in nominal or in real terms. To examine the behavioral impact of money illusion we studied the adjustment process of nominal prices after a fully anticipated negative nominal shock in an experimental setting with strategic complementarity. We show that seemingly innocuous differences in payoff presen- tation cause large behavioral differences. In particular, if the payoff information is presented to subjects in nominal terms, price stickiness and real effects are much more pronounced than when payoff information is presented in real terms. The dri- ving force of differences in real outcomes is subjects’ expectation of higher nominal inertia in the nominal payoff condition. Due to strategic complementarity, these expectations induce subjects to adjust rather slowly to the shock. Keywords: Money illusion, nominal inertia, sticky prices, non-neutrality of money JEL: C92, E32, E52. 1. University of Zürich, Institute for Empirical Research in Economics, Blümlisalpstr. 10, CH-8006 Zürich. E-Mail address:
[email protected] 2. University of St. Gallen, Department of Economics, Bodanstr. 1, CH-9000 St. Gallen. E-Mail address:
[email protected] We are particularly grateful for comments by George Akerlof, Jim Cox, Urs Fischbacher, Simon Gächter, Linda Babcock, and Dick Thaler. In addition, we acknowledge helpful comments by the participants of Seminars at Bonn, Mannheim, the NBER conference on behavioral macroeconomics and the Amsterdam workshop for experimental economics.