Consumers face complex choices when they buy wine: wine is a highly differentiated product sold at prices that vary over a wide range. This paper aims to provide monetary valuation of some relevant credence attributes of the wine, such as certifications and quality ratings made by expert...

Three measures of agricultural research spillovers considered entail estimates based on (l) level of agricultural research expenditures, (2) marginal products of agricultural research and extension expenditures, and (3) marginal products of agricultural research and extension expenditures...

As environmental deterioration and global warming arouses more and more attention, identifying cleaner and more environmentally friendly energy sources is of interest to society. In addition to environmental concerns, both the high price of gasoline and the fact that the United States has heavy...