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European Review of Agriculture Economics Vol 29 (4) (2002) pp.523-531
© 2002 Oxford University Press and the Foundation for the European Review of Agricultural Economics

The validity of parametric link functions in discrete choice models of food purchases: empirical evidence from Greek microdata

Panos Fousekis and Panagiotis Lazaridis

Agricultural University of Athens, Athens, Greece

Corresponding author: Dr P. Lazaridis, Department of Agricultural Economics, Agricultural University of Athens, Iera Odos 75, Athens, Greece 118 55. E-mail: t.lazaridis{at}uau.gr

Summary

Parametric discrete choice models are used in agricultural economics to correct outcome equations for selectivity bias. This note assesses empirically the distributional assumptions underlying these models using the HH-test and microdata on food purchases by Greek households. High rates of rejection are encountered, especially for the probit model, suggesting that the computational cost involved in testing parametric link functions is justified.

Keywords: probit, logit, specification tests


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