Nonexponential Discounting: A Direct Test And Perhaps A New Puzzle

Richard Startz and Kwok Ping Tsang

The B.E. Journal of Macroeconomics, 2012, vol. 12, issue 1, 35

Abstract: Standard models of intertemporal utility maximization assume that agents discount future utility flows at a constant rate—exponential discounting. Euler equations estimated over different time horizons should have equal discount rates but they do not. Rising term yield premia imply discount rates that rise with longer horizons since uncertainty is much too small to account for the difference in interest rates. Such deviations from exponential discounting are large enough to make a significant difference in consumption choices over long horizons. Our results can be viewed as providing estimates of horizon-specific discounts, or as a further puzzle concerning intertemporal substitution and uncertainty.

Keywords: intertemporal consumer choice; discounting; hyperbolic discounting; consumption; portfolio puzzles; CAPM (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1515/1935-1690.2453

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