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Working Paper
Labor Substitutability among Schooling Groups
Knowing the degree of substitutability between schooling groups is essential to understanding the role of human capital in income differences and to assessing the economic impact of such policies as schooling subsidies, immigration systems, or redistributive taxes. We derive a lower bound for the substitutability required for worldwide growth in real GDP from 1960 to 2010 to be consistent with a stable wage premium for schooling despite the rapid growth in schooling, assuming no exogenous worldwide regress in the technology frontier for workers with only primary schooling. That lower bound ...
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Concentrated Growth: The Role of the IT Sector
Productivity is the engine of economic growth and a key factor in determining standards of living and economic well-being. In this article, we study the distribution of total factor productivity (TFP) growth across sectors of the U.S. economy—i.e., the composition of TFP growth—and demonstrate that over approximately the past four decades, U.S. TFP growth has been highly concentrated, with the information technology (IT) sector in particular playing a large and outsized role.