Reed, Albert J.; Levedahl, J. William; Hallahan, Charles - In: American Journal of Agricultural Economics 87 (2005) 1, pp. 28-37
This article reports tests of aggregation over consumer food products and estimates of aggregate food demand elasticities. Evidence that food demand variables follow unit root processes leads us to build on and simplify existing tests of the Generalized Composite Commodity Theorem. We compute...