Hyperbolic Discounting Is Rational: Valuing the Far Future with Uncertain Discount Rates

Conventional economics supposes that agents value the present vs. the future using an exponential discounting function. In contrast, experiments with animals and humans suggest that agents are better described as hyperbolic discounters, whose discount function decays much more slowly at large ti...

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Main Authors: Farmer, J, Geanakoplos, J
Format: Book
Published: 2013
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author Farmer, J
Geanakoplos, J
author_facet Farmer, J
Geanakoplos, J
author_sort Farmer, J
collection OXFORD
description Conventional economics supposes that agents value the present vs. the future using an exponential discounting function. In contrast, experiments with animals and humans suggest that agents are better described as hyperbolic discounters, whose discount function decays much more slowly at large times, as a power law. This is generally regarded as being time inconsistent or irrational. We show that when agents cannot be sure of their own future one-period discount rates, then hyperbolic discounting can become rational and exponential discounting irrational. This has important implications for environmental economics, as it implies a much larger weight for the far future.
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spelling oxford-uuid:f3cea04e-cc4d-4940-902f-4054d407fe9c2022-03-27T12:15:00ZHyperbolic Discounting Is Rational: Valuing the Far Future with Uncertain Discount RatesBookhttp://purl.org/coar/resource_type/c_1843uuid:f3cea04e-cc4d-4940-902f-4054d407fe9cSymplectic Elements at Oxford2013Farmer, JGeanakoplos, JConventional economics supposes that agents value the present vs. the future using an exponential discounting function. In contrast, experiments with animals and humans suggest that agents are better described as hyperbolic discounters, whose discount function decays much more slowly at large times, as a power law. This is generally regarded as being time inconsistent or irrational. We show that when agents cannot be sure of their own future one-period discount rates, then hyperbolic discounting can become rational and exponential discounting irrational. This has important implications for environmental economics, as it implies a much larger weight for the far future.
spellingShingle Farmer, J
Geanakoplos, J
Hyperbolic Discounting Is Rational: Valuing the Far Future with Uncertain Discount Rates
title Hyperbolic Discounting Is Rational: Valuing the Far Future with Uncertain Discount Rates
title_full Hyperbolic Discounting Is Rational: Valuing the Far Future with Uncertain Discount Rates
title_fullStr Hyperbolic Discounting Is Rational: Valuing the Far Future with Uncertain Discount Rates
title_full_unstemmed Hyperbolic Discounting Is Rational: Valuing the Far Future with Uncertain Discount Rates
title_short Hyperbolic Discounting Is Rational: Valuing the Far Future with Uncertain Discount Rates
title_sort hyperbolic discounting is rational valuing the far future with uncertain discount rates
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AT geanakoplosj hyperbolicdiscountingisrationalvaluingthefarfuturewithuncertaindiscountrates