Department of Economics,
University of Oxford, Manor Road, Oxford, OX1 3UQ.
Institutional Affiliation: University of Oxford
Information about this author at RePEc
NBER Working Papers and Publications
|July 2018||Of Mice and Merchants: Trade and Growth in the Iron Age|
with , , : w24825
We study the causal connection between trade and development using one of the earliest massive trade expansions: the first systematic crossing of open seas in the Mediterranean during the time of the Phoenicians. We construct a measure of connectedness along the shores of the sea. This connectivity varies with the shape of the coast, the location of islands, and the distance to the opposing shore. We relate connectedness to local growth, which we measure using the presence of archaeological sites in an area. We find an association between better connected locations and archaeological sites during the Iron Age, at a time when sailors began to cross open water very routinely and on a big scale. We corroborate these findings at the level of the world.
|January 2013||Task Specialization in U.S. Cities from 1880-2000|
with , : w18715
We develop a new methodology for quantifying the tasks undertaken within occupations using over 3,000 verbs from more than 12,000 occupational descriptions in the Dictionary of Occupational Titles (DOTs). Using micro-data from the United States from 1880-2000, we find an increase in the employment share of interactive occupations within sectors over time that is larger in metro areas than non-metro areas. We interpret these findings using a model in which reductions in transport and communication costs induce urban areas to specialize according to their comparative advantage in interactive tasks. We presenting suggestive evidence relating increases in employment in interactive occupations to improvements in transport and communication technologies. Our findings highlight a change in the na...
Published: TASK SPECIALIZATION IN U.S. CITIES FROM 1880–2000 Guy Michaels London School of Economics Ferdinand Rauch University of Oxford Stephen J. Redding Princeton University and NBER, Journal of the European Economic Association Preprint prepared on 18 January 2018 using jeea.cls v1.0 citation courtesy of