Yen, Steven T.

December, 2002

By: Yen, Steven T.; Huang, Chung L.
Demands for beef products are investigated using the U.S. Department of Agriculture's 1987-88 Nationwide Food Consumption Survey data. The censored translog demand system is estimated with full-information and simulated maximum-likelihood procedures. These procedures represent different approaches to evaluation of multiple probability integrals in the likelihood function, but produce very similar parameter and elasticity estimates. Findings suggest sociodemographic variables play important roles in the demand for beef, and that demand for different cuts of beef should be treated differently.

December, 1997

By: Yen, Steven T.; Boxall, Peter C.; Adamowicz, Wiktor L.
As provincial governments in Canada trim budgets, fewer funds are available for environmental conservation programs. Many jurisdictions are letting private interests and/or users of the resource base help fund conservation projects. Thus funding for conservation is becoming more dependent on donations to environmental causes either through direct giving of funds or through memberships in organizations. This study explores some determinants of private contributions to environmental conservation activities through an econometric analysis of donations and memberships relating to wildlife habitat protection and enhancement. We use data from a 1991 survey conducted in the three prairie provinces that provides information on donation behavior, income, wildlife-related activity, household compositions, and a variety of other factors. A double-hurdle econometric model is used to allow independent variables to have different effects on the probability of donations and the level of donations. Our empirical results suggest that changes in the economy will be important to donation behavior. Declines in participation and recruitment in hunting will also have impacts on donations to conservation causes, but these impacts, although significant, may not be as large. However, consumptive and nonconsumptive activities may be influenced by management agencies and used to bolster environmental donations.

December, 1996

By: Yen, Steven T.; Huang, Chung L.
This study estimates household demand for finfish in the United States using a limited dependent variable model that accounts for both participation and consumption decisions and also accommodates nonnormal heteroskedastic errors. Results suggest that own-price elasticity is near unitary and income elasticity is small. Price of finfish, shopping frequency, Northeast, Black and other non-Whites, and the life-cycle variable "young, single, no children" are they key factors that affect significantly both the probability of participation and the level of finfish consumption. Furthermore, a variable may exert opposite effects on the probability and level of consumption.