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Low safe interest rates: A case for dynamic inefficiency?

Gaetano Bloise and Pietro Reichlin

Review of Economic Dynamics, 2023, vol. 51, 633-656

Abstract: We reexamine the tests for dynamic inefficiency in productive overlapping-generations economies with stochastic growth. Contrary to certain claims in the recent literature, we argue that the size of real safe interest rates relative to average GDP growth is an inconclusive test for dynamic inefficiency. A more accurate test should take into account the correlation between growth and the marginal utility of wealth. We provide an exhaustive criterion based on the growth-adjusted dominant root of the stochastic discount factor emerging at the competitive equilibrium. Surprisingly, a preliminary rough empirical application of this criterion uncovers dynamic inefficiency of the US economy for any reasonable degree of risk aversion. We also distinguish capital overaccumulation from an inefficient distribution of consumption risk. The refined test for capital overaccumulation is rather stringent: Capital is not overaccumulated if the net dividend remains positive with some probability, as opposed to always, as in the original Abel et al.'s formulation. (Copyright: Elsevier)

Keywords: Dynamic inefficiency; Capital overaccumulation; Low interest rates; Dominant root (search for similar items in EconPapers)
JEL-codes: D60 E21 E62 G1 H2 H21 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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DOI: 10.1016/j.red.2023.06.005

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