TY - JOUR AU - Spolaore, Enrico AU - Wacziarg, Romain TI - Long-Term Barriers to the International Diffusion of Innovations JF - National Bureau of Economic Research Working Paper Series VL - No. 17271 PY - 2011 Y2 - August 2011 DO - 10.3386/w17271 UR - http://www.nber.org/papers/w17271 L1 - http://www.nber.org/papers/w17271.pdf N1 - Author contact info: Enrico Spolaore Department of Economics Tufts University Braker Hall 8 Upper Campus Road Medford, MA 02155 Tel: 617/627-4068 Fax: 617/627-3917 E-Mail: enrico.spolaore@tufts.edu Romain Wacziarg Anderson School of Management at UCLA C-510 Entrepreneurs Hall 110 Westwood Plaza Los Angeles, CA 90095-1481 Tel: 310 825 4507 E-Mail: wacziarg@anderson.ucla.edu M1 - published as Enrico Spolaore, Romain Wacziarg. "Long-Term Barriers to the International Diffusion of Innovations," in Jeffrey Frankel and Christopher Pissarides, organizers, "NBER International Seminar on Macroeconomics 2011" University of Chicago Press (2012) M3 - presented at "ISOM", June 17-18, 2011 AB - We document an empirical relationship between the cross-country adoption of technologies and the degree of long-term historical relatedness between human populations. Historical relatedness is measured using genetic distance, a measure of the time since two populations' last common ancestors. We find that the measure of human relatedness that is relevant to explain international technology diffusion is genetic distance relative to the world technological frontier ("relative frontier distance"). This evidence is consistent with long-term historical relatedness acting as a barrier to technology adoption: societies that are more distant from the technological frontier tend to face higher imitation costs. The results can help explain current differences in total factor productivity and income per capita across countries. ER -