Untangling Trade and Technology: Evidence from Local Labour Markets
研究了1980至2007年间贸易和技术对美国地方劳动力市场就业的不同影响，发现中国进口竞争导致就业下降，而计算机化则带来职业极化但无净就业减少。
We juxtapose the effects of trade and technology on employment in US local labour markets between 1980 and 2007. Labour markets whose initial industry composition exposes them to rising Chinese import competition experience significant falls in employment, particularly in manufacturing and among non-college workers. Labour markets susceptible to computerisation due to specialisation in routine task-intensive activities instead experience occupational polarisation within manufacturing and non-manufacturing but do not experience a net employment decline. Trade impacts rise in the 2000s as imports accelerate, while the effect of technology appears to shift from automation of production activities in manufacturing towards computerisation of information-processing tasks in non-manufacturing.