Study results from A. Gohin and colleagues in the area of agricultural economics published.

"The main objective of this article is to examine econometric estimates of price elasticities of food trade functions. We investigate the relevance of the prominent gravity approach," scientists writing in the Journal of Agricultural Economics report.

"This approach is based on the assumptions of symmetric, monotone, homothetic, Constant Elasticity of Substitution (CES) preferences. We test all these assumptions using intra-European trade in cheese. In general, the assumptions made on preferences by the gravity approach are not supported by our dataset," wrote A. Gohin and colleagues.

The researchers concluded: "The bias induced in the estimated price …