Consumption-Wealth Comovement of the Wrong Sign

James Choi, David Laibson, Brigitte Madrian and Andrew Metrick

No 10454, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: Economic theory predicts that an unexpected wealth windfall should increase consumption shortly after the windfall is received. We test this prediction using administrative records on over 40,000 401(k) accounts. Contrary to theory, we estimate a negative short-run marginal propensity to consume out of idiosyncratic 401(k) capital gains shocks. These results cannot be interpreted as standard intertemporal substitution, since the idiosyncratic returns that we study do not predict future returns. Instead, our findings imply that many investors are influenced by a positive feedback effect, through which higher recent returns encourage higher short-run saving. Like any other animal, 401(k) participants appear to increase behaviors that have been associated with high rewards in the past.

JEL-codes: E2 G1 (search for similar items in EconPapers)
Date: 2004-04
Note: AP EFG
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Citations: View citations in EconPapers (6)

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