Stochastic Complementarity

32 Pages Posted: 6 Feb 2018

See all articles by Paola Manzini

Paola Manzini

University of St. Andrews - School of Economics and Finance; Institute for the Study of Labor (IZA)

Marco Mariotti

University of London - School of Economics and Finance

Levent Ulku

Instituto Tecnológico Autónomo de México (ITAM)

Abstract

The Hicksian definition of complementarity and substitutability may not apply in contexts in which agents are not utility maximisers or where price or income variations, whether implicit or explicit, are not available. We look for tools to identify complementarity and substitutability satisfying the following criteria: they are behavioural (based only on observable choice data); model-free (valid whether the agent is rational or not); and they do not rely on price or income variation. We uncover a conflict between properties that it is arguably reasonable for a complementarity notion to possess. We discuss three different possible resolutions of the conflict.

Keywords: complements and substitutes, correlation, stochastic choice

JEL Classification: D0

Suggested Citation

Manzini, Paola and Mariotti, Marco and Ulku, Levent, Stochastic Complementarity. IZA Discussion Paper No. 11296. Available at SSRN: https://ssrn.com/abstract=3117300

Paola Manzini (Contact Author)

University of St. Andrews - School of Economics and Finance ( email )

North St
Saint Andrews, Fife KY16 9AJ
United Kingdom

HOME PAGE: http://www.st-andrews.ac.uk/~pm210/

Institute for the Study of Labor (IZA)

P.O. Box 7240
Bonn, D-53072
Germany

Marco Mariotti

University of London - School of Economics and Finance ( email )

Mile End Road
London, E1 4NS
United Kingdom

Levent Ulku

Instituto Tecnológico Autónomo de México (ITAM) ( email )

Av. Camino a Sta. Teresa 930
Col. Héroes de Padierna
Mexico City, D.F. 01000, Federal District 01080
Mexico

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