2014
DOI: 10.1016/j.jmateco.2014.08.001
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Afriat’s theorem for indivisible goods

Abstract: a b s t r a c tWe identify a natural counterpart of the standard GARP for demand data in which goods are all indivisible. We show that the new axiom (DARP, for ''discrete axiom of revealed preference'') is necessary and sufficient for the rationalization of the data by a well-behaved utility function. Our results complement the main finding of Polisson and Quah (2013), who rather minimally modify the original consumer problem with indivisible goods so that the standard GARP still applies.

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Cited by 8 publications
(11 citation statements)
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“…This assumption is not very restrictive in our setting, however, as the range of deductible options in each coverage is not very large and, therefore, assuming a differentiable Bernoulli utility function, local curvature is what matters. 14 A handful of papers study riskless choice with discrete choice sets (e.g., Polisson and Quah (2013), Forges and Iehlé (2014), Cosaert and Demuynck (2015)). …”
Section: Related Literaturementioning
confidence: 99%
“…This assumption is not very restrictive in our setting, however, as the range of deductible options in each coverage is not very large and, therefore, assuming a differentiable Bernoulli utility function, local curvature is what matters. 14 A handful of papers study riskless choice with discrete choice sets (e.g., Polisson and Quah (2013), Forges and Iehlé (2014), Cosaert and Demuynck (2015)). …”
Section: Related Literaturementioning
confidence: 99%
“…This assumption is not very restrictive in our setting, however, as the range of deductible options in each coverage is not very large and, therefore, assuming a differentiable Bernoulli utility function, local curvature is what matters. 14 A handful of papers study riskless choice with discrete choice sets (e.g., Polisson and Quah (2013), Forges and Iehlé (2014), Cosaert and Demuynck (2015)).…”
Section: Related Literaturementioning
confidence: 99%
“…5 A utility function U : R ℓ + → R is homothetic if it is a positive monotonic transformation of a function that is homogeneous of degree 1; that is, if U (x) = f (g(x)) where g(x) : R ℓ + → R is homogeneous of degree 1 and f : R → R is positive monotonic. 6 Polisson and Quah (2013) and Forges and Iehlé (2014) also considered rationalizability problems in the indivisible goods settings. 7 A utility function U : Z ℓ + → Z is discrete concave if, for any x 1 , x 2 , .…”
Section: Definition 5 a Gb-data Set O Is General Budget Rationalizabmentioning
confidence: 99%
“…6 Polisson and Quah (2013) and Forges and Iehlé (2014) also considered rationalizability problems in the indivisible goods settings. 7 A utility function U : Z ℓ + → Z is discrete concave if, for any x 1 , x 2 , . .…”
Section: Definition 5 a Gb-data Set O Is General Budget Rationalizabmentioning
confidence: 99%