Relatedness and technological change in cities: the rise and fall of technological knowledge in US metropolitan areas from 1981 to 2010

Ron Boschma (), Pierre-Alexandre Balland and Dieter Kogler

Industrial and Corporate Change, 2015, vol. 24, issue 1, 223-250

Abstract: This article investigates by means of US Patent and Trademark Office (USPTO) patent data whether technological relatedness at the city level was a crucial driving force behind technological change in 366 US cities from 1981 to 2010. Based on a three-way fixed-effects model, we find that the entry probability of a new technology in a city increases by 30% if the level of relatedness with existing technologies in the city increases by 10%, while the exit probability of an existing technology decreases by 8%.

Date: 2015
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Working Paper: Relatedness and Technological Change in Cities: The rise and fall of technological knowledge in U.S. metropolitan areas from 1981 to 2010 (2013)
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