The response of export demand to price changes for selected agricultural products did not become elastic over the 1969-77 period. This report is the first to test empirically the hypothesis that, during the 1970's, competition increased and the United States became a marginal exporter of farm...

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...

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,...

The conclusions of a logically consistent economic theory which strictly adheres to Aristotle's axioms of logic are factually true if its sufficient conditions are all factually true. Alternatively, if a conclusion of such a theory is false, then at least one of its assumptions is false....