This paper develops GARCH and VEC-MGARCH-based tests of four hypotheses from Fama and French (1988) involving linkages between spot and futures prices --- both their levels and variances. The tests are applied to monthly data for seven metals traded on the London Metal Exchange over the period...

This paper examines the controversy involving international trade by employing a simple model. It analyzes the effects of unilateral technological improvements in one entity on the welfare of that entity and its trading partners. Improvements in one country are irreversible and lead to...

After World War II economists acquired increasing importance in the American society in general. Moreover, the production of economics PhDs in the United States increased substantially and became a less concentrated industry. This period witnessed also the reformulation of the graduate education...

This paper presents a new approach to the two-sector optimal taxation problem. We derive the optimal labor income tax rate which depends on factor intensity across sectors. It is the labor intensity that determines the initial wage rate, and therefore the optimal labor tax rate. We show that an...