Causality tests developed by Sims and Granger are fatally flawed for several reasons First, when two variables, X and Y, are uncorrelated, X has no linear predictive value for Y, but X,and Y may be nonlinearly related unless they are statistically Independent, In which case X and Y are not...

Implications of real cash balances as a productive input in agricultural production are explored. A system of aggregate input demand functions for agriculture including real cash balances is formulated and estimated, assuming that producers minimize input costs for a given output level....

A "demand" model for fresh and processed potatoes is formulated. The price forecasts for 1983-1992 suggest rising trends for both retail prices in both nominal and real terms. In the next ten years, nominal fresh and processed prices are predicted to increase by 106 percent and 72 percent,...