摘要:This research examines selected empirical properties of duality relationships. MonteCarlo experiments indicate that Hessian matrices estimated from the normalisedunrestricted profit, restricted profit and production functions yield con.icting resultsin the presence of measurement error and low relative price variability. In particular,small amounts of measurement error in quantity variables can translate into largeerrors in uncompensated estimates calculated via restricted and unrestricted profitand production functions. These results emphasise the need for high quality datawhen estimating empirical models in order to accurately determine dual relationshipsimplied by economic theory.