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Essays On Macroeconomics, Sangmin Aum

Arts & Sciences Electronic Theses and Dissertations

My dissertation investigates how technological progress shapes economy. Technological changes have heterogeneous effects on economic agents as they are often biased toward certain tasks or sectoral activities. The dissertation aims at understanding the sources of heterogeneity and their impacts on aggregate outcomes, focusing on economic growth and labor allocation.

The first chapter investigates a bi-directional relation between technology and occupational structure (job allocation). Jobs have polarized in the U.S. since at least the 1980s, but the growth of high-skill jobs has been stagnated since 2000s (skill demand reversal). I document that software innovation has increased compared to equipment innovation and …