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Monotone Stochastic Choice Models: The Case of Risk and Time Preferences

Jose Apesteguia () and Miguel Ballester ()

No 859, Working Papers from Barcelona Graduate School of Economics

Abstract: Suppose that, when evaluating two alternatives x and y by means of a parametric utility function, low values of the parameter indicate a preference for x and high values indicate a preference for y. We say that a stochastic choice model is monotone whenever the probability of choosing x is decreasing in the preference parameter. We show that the standard use of random utility models in the context of risk and time preferences may sharply violate this monotonicity property, and argue that their use in preference estimation may be problematic. In particular, they may pose identi cation problems and yield biased estimations. We then establish that the alternative random parameter models, in contrast, are always monotone. We show in an empirical application that standard risk-aversion assessments may be severely biased.

Keywords: stochastic choice; preference parameters; random utility models; random parameter models; Risk Aversion; delay aversion (search for similar items in EconPapers)
JEL-codes: C25 D81 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-dcm, nep-ore and nep-upt
Date: 2015-12
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Working Paper: Monotone stochastic choice models: The case of risk and time preferences (2015) Downloads
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