The World Technology Frontier: What Can We Learn from the US States?
利用OECD国家和美国各州的数据，非参数地重新估计世界技术前沿，发现加入美国州级数据并允许技能劳动间不完全替代能显著降低跨国技术效率估计的上偏，并据此分解1970-2000年OECD国家的生产率差异和增长来源。
Abstract We re‐estimate the world technology frontier non‐parametrically using a dataset covering OECD country‐level data and US state‐level data on GDP per worker and the stocks of physical capital, unskilled labour and skilled labour. The auxiliary use of US state‐level data significantly reduces the upward bias in cross‐country estimates of technical efficiency, and so does allowing for imperfect substitutability between skilled and unskilled labour. We then use our adjusted estimate of the world technology frontier in a series of decompositions of productivity differences and sources of economic growth in the OECD in 1970–2000, including also ‘appropriate technology vs. efficiency’ decompositions.