Productivity Differences
提出技术技能错配假说，解释欠发达国家生产率低下的原因，并利用跨行业数据验证模型预测，表明该错配可解释大部分人均产出差异。
Many technologies used by the LDCs are developed in the OECD economies and are designed to make optimal use of the skills of these richer countries' workforces. Differences in the supply of skills create a mismatch between the requirements of these technologies and the skills of LDC workers, and lead to low productivity in the LDCs. Even when all countries have equal access to new technologies, this technology-skill mismatch can lead to sizable differences in total factor productivity and output per worker. We provide evidence in favor of the cross-industry productivity patterns predicted by our model, and also show that technology-skill mismatch could account for a large fraction of the observed output per worker differences in the data.