U.S. Trade with Developing Countries and Wage Inequality
自1970年代中后期以来，美国低学历与高学历工人之间的工资差距显著扩大，部分原因可能是与低工资国家贸易增长导致劳动力需求转向高学历工人。
Since the mid-to-late 1970's, wage inequality between low- and highly educated workers has widened markedly. The wage premium to a college education compared with a high-school education has increased by some 20 percentage points (see George J. Borjas and Valerie A. Ramey [1994] for recent estimates). Part of the explanation seems to lie with a slowdown in the growth of supply of highly educated workers in the 1980's. Another part seems to lie with a demand shift toward educated workers. Two hypotheses have been advanced to account for the alleged demand shift. The first holds that technological change has been biased in favor of high-education workers. The second holds that growing international trade with low-wage countries has shifted labor-market demand in the United States away from low-educated workers, as the United States increasingly imports goods produced by such workers from low-wage countries.