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No inventor is an island: social connectedness and the geography of knowledge flows in the US

Diemer, Andreas and Regan, Tanner (2020) No inventor is an island: social connectedness and the geography of knowledge flows in the US. CEP Discussion Papers (1731). Centre for Economic Performance, London School of Economics and Political Science: University College London, London, UK.

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Abstract

Do informal social ties connecting inventors across distant places promote knowledge flows between them? To measure informal ties, we use a new and direct index of social connectedness of regions based on aggregate Facebook friendships. We use a well-established identification strategy that relies on matching inventor citations with citations from examiners. Moreover, we isolate the specific effect of informal connections, above and beyond formal professional ties (co-inventor networks) and geographic proximity. We identify a significant and robust effect of informal ties on patent citation. Further, we find that the effect of geographic proximity on knowledge flows is entirely explained by informal social ties and professional networks. We also show that the effect of informal social ties on knowledge flows: has become increasingly important over the last two decades, is higher for older or `forgotten' patents, is more important for

Item Type: Monograph (Discussion Paper)
Official URL: https://cep.lse.ac.uk/_new/publications/discussion...
Additional Information: © 2020 The Authors
Divisions: LSE
Subjects: H Social Sciences > HD Industries. Land use. Labor
H Social Sciences > HM Sociology
H Social Sciences > HC Economic History and Conditions
JEL classification: O - Economic Development, Technological Change, and Growth > O3 - Technological Change; Research and Development > O33 - Technological Change: Choices and Consequences; Diffusion Processes
R - Urban, Rural, and Regional Economics > R1 - General Regional Economics > R12 - Size and Spatial Distributions of Regional Economic Activity; Interregional Trade
Z - Other Special Topics > Z1 - Cultural Economics; Economic Sociology; Economic Anthropology > Z13 - Social Norms and Social Capital; Social Networks
Date Deposited: 20 Jan 2021 00:16
Last Modified: 05 Feb 2021 00:24
URI: http://eprints.lse.ac.uk/id/eprint/108500

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