Habit formation and the equity-premium puzzle: a skeptical view

We argue that ceteris paribus, introducing a habit that resolves the equity premium puzzle is equivalent to increasing the coefficient of relative risk aversion. Thus, if habit is modeled subject to the constraint that the Arrow-Pratt coefficient of relative risk aversion is held at a constant "...

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Main Authors: Sussman, O, Athanasoulis, S
Format: Working paper
Published: University of Oxford 2004
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author Sussman, O
Athanasoulis, S
author_facet Sussman, O
Athanasoulis, S
author_sort Sussman, O
collection OXFORD
description We argue that ceteris paribus, introducing a habit that resolves the equity premium puzzle is equivalent to increasing the coefficient of relative risk aversion. Thus, if habit is modeled subject to the constraint that the Arrow-Pratt coefficient of relative risk aversion is held at a constant "acceptable" level, the effect on the equity premium is not quantitatively significant. In a dynamic setting, the fluctuations of the habit increase the equity premium, slightly. However, modest improvement in the model's predictive power comes at a cost of generating unrealistic fluctuations in the risk-free interest rate. Our analysis of these findings yields the following result: a habit is observationally equivalent,up to afirst order approximation, to a higher relative risk aversion and to a preference shock. Both these effects are known to be insufficient for resolving the equity-premium puzzle.
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spelling oxford-uuid:2d397b1b-3418-46ce-b387-66b73f33f7922022-03-26T12:41:30ZHabit formation and the equity-premium puzzle: a skeptical viewWorking paperhttp://purl.org/coar/resource_type/c_8042uuid:2d397b1b-3418-46ce-b387-66b73f33f792Bulk import via SwordSymplectic ElementsUniversity of Oxford2004Sussman, OAthanasoulis, SWe argue that ceteris paribus, introducing a habit that resolves the equity premium puzzle is equivalent to increasing the coefficient of relative risk aversion. Thus, if habit is modeled subject to the constraint that the Arrow-Pratt coefficient of relative risk aversion is held at a constant "acceptable" level, the effect on the equity premium is not quantitatively significant. In a dynamic setting, the fluctuations of the habit increase the equity premium, slightly. However, modest improvement in the model's predictive power comes at a cost of generating unrealistic fluctuations in the risk-free interest rate. Our analysis of these findings yields the following result: a habit is observationally equivalent,up to afirst order approximation, to a higher relative risk aversion and to a preference shock. Both these effects are known to be insufficient for resolving the equity-premium puzzle.
spellingShingle Sussman, O
Athanasoulis, S
Habit formation and the equity-premium puzzle: a skeptical view
title Habit formation and the equity-premium puzzle: a skeptical view
title_full Habit formation and the equity-premium puzzle: a skeptical view
title_fullStr Habit formation and the equity-premium puzzle: a skeptical view
title_full_unstemmed Habit formation and the equity-premium puzzle: a skeptical view
title_short Habit formation and the equity-premium puzzle: a skeptical view
title_sort habit formation and the equity premium puzzle a skeptical view
work_keys_str_mv AT sussmano habitformationandtheequitypremiumpuzzleaskepticalview
AT athanasouliss habitformationandtheequitypremiumpuzzleaskepticalview