Richard Tiffin University of Reading   Dept. of Ag. and Food Econ. University of Reading PO Box 237 Reading, RG6 6AR UK   j.r.tiffin@reading.ac.uk         Primary Research Focus: Agricultural and Food Economics. Demand Analysis. Time series methods. Bayesian Econometrics   JEL Areas: Q0 : Agricultural and Natural Resource Economics; Environmental and Ecological Economics: General C1 : Econometric and Statistical Methods: General