TY - JOUR AU - Leahy,John V. AU - Zeira,Joseph TI - The Timing of Purchases and Aggregate Fluctuations JF - National Bureau of Economic Research Working Paper Series VL - No. 7672 PY - 2000 Y2 - April 2000 UR - http://www.nber.org/papers/w7672 L1 - http://www.nber.org/papers/w7672.pdf N1 - Author contact info: John V. Leahy Department of Economics New York University 19 W. 4th Street, 6th Floor New York, NY 10012 Tel: 212/992-9770 E-Mail: john.leahy@nyu.edu Joseph Zeira Department of Economics The Hebrew University of Jerusalem Mt. Scopus Jerusalem 91905 ISRAEL Tel: 972 2 5883256 Fax: 972 2 5816071 E-Mail: mszeira@mscc.huji.ac.il AB - This paper analyzes how the decision of when to buy a durable good affects both non-durable consumption and business cycle dynamics. At the individual level, we show that the timing of durable goods purchases plays an important role in smoothing consumption over time. In the benchmark case, the time at which the agent purchases the durable good is the only variable that reacts to changes in wealth, while other variables, such as the consumption of non-durables or the amount of the durable that the individual purchases, remain unchanged. At the aggregate level, we show that timing decisions can serve as a mechanism for the amplification and propagation of aggregate shocks. A decline in wealth causes individuals to delay their durable goods purchases which reduces demand dramatically for some time. ER -