Skill-Biased Technical Change and the Cost of Higher Education
研究了1961-2009年间美国高等教育成本上涨的原因，发现技能偏向型技术进步可以解释学费增长、大学入学率提高和毕业生相对收入变化，并预测若成本停止增长，2010年入学率将提高3%-6%。
We document the growth in higher education costs and tuition over the past 50 years. To explain these trends, we develop a general equilibrium model with skill- and sector-biased technical change. Finding the model's parameters through a combination of estimation and calibration, we show that it can explain the rise in college costs between 1961 and 2009, along with the increase in college attainment and the change in the relative earnings of college graduates. The model predicts that if college costs had ceased to grow after 1961, enrollment in 2010 would have been 3%–6% higher.