While performing separability tests, studies rarely checked negativity to ensure the appropriate curvature of the expenditure function. The effect of imposing negativity on the results of separability tests is examined. Findings indicate that imposing negativity can affect separability tests in...

Nutritional considerations are of increasing importance in some foods. To address demand for nutrition, we estimate a demand system for cereals of different nutrient types, concentrating on fiber and focussing on five Kellogg's cereals with marked differences in fiber content. Results shed light...

This study focused on consumer demand for orange juice, for both frozen concentrate and refrigerated, by major brands and nutritional enhancement. Demand for calcium-enhanced orange juice and standard orange juice were compared. Estimation involved system of demand equations and included the...