A lattice test for additive separability

Matthew Polisson

No W18/08, IFS Working Papers from Institute for Fiscal Studies

Abstract: We derive necessary and sufficient conditions for a finite data set of price and demand observations to be consistent with an additively separable preference. We do so without imposing concavity on any of the subutility functions or convexity of the budget set a priori, thereby generalizing earlier results. Our simple and intuitive lattice test easily accommodates departures from rationality, or errors, which subsequently facilitates a rich empirical analysis. We apply our econometric techniques to the food consumption of a panel of British households. The primary empirical finding is that additive separability has considerable success in explaining the data.

Keywords: additive separability; consumer demand; lattice test; revealed preference (search for similar items in EconPapers)
JEL-codes: C14 C60 D11 D12 (search for similar items in EconPapers)
Date: 2018-03-05
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Citations: View citations in EconPapers (4)

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