Globalization, co-operation costs, and wage inequalities
研究了国际商务旅行和通信成本下降如何促使发达国家高技能工人与发展中国家低技能工人合作，从而影响不同技能水平工人的工资差距，并用美国和跨国数据验证了该机制。
The falling cost of international business travel and communication motivates highly-skilled workers who live in developed countries to spend more of their time co-operating with less-skilled workers in developing countries. This tends to narrow the gap between developed and developing countries in the wages of less-skilled workers, but to widen the wage gap within developed countries between highly-skilled and less-skilled workers. The paper formalizes this mechanism and tests it on data for the United States and developing countries. The two effects on wage inequalities of greater co-operation of highly-skilled workers with workers in developing countries both seem quantitatively important.