Inventing the Endless Frontier: The Effects of the World War II Research Effort on Post-War Innovation
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WWII R&D impact: Counties with 2x OSRD patents see +60-65% tech employment by 1970s. Wartime innovation clusters drive long-term regional economic specialization. @nberpub
New NBER finds significant spillover effects from Government R&D efforts during the second world war beyond just creating technology clusters (ie positive spillover from the clusters the government spending put in motion)
“….During World War II, the U.S. government launched an unprecedented effort to mobilize science for war: the newly-established Office of Scientific Research and Development (OSRD) entered thousands of R&D contracts with industrial and academic contractors, spending one to two orders of magnitude more than what the government was previously investing in science. In this paper, we study the long-run effects of the OSRD-supported research effort on U.S. invention. Using data on all OSRD contracts, we show that these investments had large effects on the direction and location of U.S. invention and high-tech industrial employment, setting in motion agglomeration forces which shaped the technology clusters of the postwar era. Our results demonstrate the effects of a large, mission-driven government R&D program on the growth of domestic technology clusters and long-run technological progress…. Rather, it appears entire local research ecosystems sprung up in the locations and technology areas where OSRD activity was concentrated – including universities, federally-funded research centers, and private invention.The long-lived effects of the OSRD may in turn be reflected in higher-order patent citation linkages, and supported by university spillovers to local invention, federally-funded research centers, Cold War defense R&D spending, or other local research activities – all of which we are exploring in ongoing research. As it stands, the evidence suggests the OSRD built up local scientific and technological capabilities that allowed local innovation to thrive after the war. Our final set of results explores how the OSRD affected not just inventive output, but entire local economies. Using U.S. County Business Patterns (CBP) data, we take our analysis to county-level manufacturing employment in industries closely tied to the wartime research effort. We show that in counties with more OSRD-supported patents in electronics technology classes, employment in the Communications and Electronics industries is substantially higher after the war – even conditional on total related patenting. Empirically, a doubling of OSRD patents in the 1940s is associated with 60-65% higher employment in these industries in the 1970s. Our interpretation is that the OSRD not only deepened local technology clusters and increased local invention over the long-run, but also created jobs in associated manufacturing industries….Given that these effects are largest in columns controlling for total employment, our interpretation of this evidence is that counties where the wartime research was performed were subsequently more likely to be loci of electronics and communications manufacturing, and in turn more specialized in these high-tech industries versus others. The upshot, however, is that the seeds planted by the wartime research effort appears to have also sprouted local industrial activity, spilling over from the inventive sector to the local economy more broadly…”

Daniel Gross, Bhaven Sampat, “Inventing the Endless Frontier: The Effects of the World War II Research Effort on Post-war Innovation,” National Bureau Of Economic Research, June 2020, https://www.nber.org/papers/w27375



