The Skill Bias of World Trade
论证国际贸易即使发生在相同国家之间，也能通过规模经济提高对技能劳动力的相对需求，并利用市场扩大导致教育回报、技能溢价和收入不平等上升的新证据支持这一结论。
This article suggests that international trade, even between identical countries, can raise the relative demand for skilled labour. It shows that a simple generalisation of Krugman's (1979) model of trade in differentiated products has implications for the skill premium, through economies of scale rather than Hecksher-Ohlin effects, that are consistent with a number of stylised facts. It provides new evidence in support of these results by showing that increases in market size lead to higher returns to education, skill premia and income inequality. Copyright © The Author(s). Journal compilation © Royal Economic Society 2008.