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Quarterly Journal of Economics Vol. 112 No. 2 1997

Golden Eggs and Hyperbolic Discounting

D. Laibson

Harvard University Press

open access

Abstract

Hyperbolic discount functions induce dynamically inconsistent preferences, implying a motive for consumers to constrain their own future choices. This paper analyzes the decisions of a hyperbolic consumer who has access to an imperfect commitment technology: an illiquid asset whose sale must be initiated one period before the sale proceeds are received. The model predicts that consumption tracks income, and the model explains why consumers have asset-specific marginal propensities to consume. The model suggests that financial innovation may have caused the ongoing decline in U. S. savings rates, since financial innovation increases liquidity, eliminating commitment opportunities. Finally, the model implies that financial market innovation may reduce welfare by providing “too much” liquidity.

DOI
10.1162/003355397555253
Volume
112
Issue
2
Pages
443-478
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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