Habit persistence reduces risk aversion

Christian Gollier ()

The Geneva Papers on Risk and Insurance - Issues and Practice, 2021, vol. 46, issue 2, No 4, 214-223

Abstract: Abstract How does habit formation affect the dynamic demand for insurance and risky assets? We examine a dynamic portfolio-saving choice problem for two structures of preferences. In the first model, the consumer faces an exogenous path of minimum levels of subsistence over time. In the second model, these levels are subject to habit persistence, i.e. they are increasing in past consumption. We show that adding habit persistence to the initial model substantially reduces the aversion to risk. The intuition is that the positive correlation between current portfolio returns and future levels of subsistence helps time-diversifying risks. This result goes against the widespread idea that habit persistence can resolve the equity premium puzzle.

Keywords: Additive habit; Dynamic portfolio choice; Insurance demand; Time diversification; Equity premium (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1057/s41288-021-00215-9

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