Listening to What the World Says: Bilingualism and Earnings in the United States
利用美国大学毕业生代表性样本，通过多种计量方法发现，掌握第二语言能带来2%-3%的工资溢价，对关注语言技能经济回报的研究者和政策制定者有参考价值。
Is there a shortage of critical foreign language skills in the United States? Recent concerns about national security and economic globalization suggest increased demand and wage premia for foreign language speakers. The use of English as the international language, however, suggests a decrease in demand for foreign language skills in the United States. To address this question, we study a representative sample of U.S. college graduates. Ordinary least squares regressions with controls for cognitive ability, nonparametric methods based on the propensity score, and panel data methods suggest a 2%-3% wage premium for college graduates who can speak a second language. 2005 President and Fellows of Harvard College and the Massachusetts Institute of Technology.