TY - JOUR AU - Alon, Titan AU - Berger, David AU - Dent, Robert AU - Pugsley, Benjamin TI - Older and Slower: The Startup Deficit’s Lasting Effects on Aggregate Productivity Growth JF - National Bureau of Economic Research Working Paper Series VL - No. 23875 PY - 2017 Y2 - September 2017 DO - 10.3386/w23875 UR - http://www.nber.org/papers/w23875 L1 - http://www.nber.org/papers/w23875.pdf N1 - Author contact info: Titan Alon University of California San Diego Department of Economics 9500 Gilman Drive #0508 La Jolla, CA 92093 E-Mail: talon@ucsd.edu David W. Berger Department of Economics Duke University 419 Chapel Drive Social Science Building 231 Durham, NC 27708 Tel: 919/660-1853 E-Mail: david.berger@duke.edu Robert C. Dent Nomura Securities E-Mail: robcdent@gmail.com Benjamin Pugsley University of Notre Dame Department of Economics Notre Dame, IN 46556 E-Mail: bpugsley@nd.edu AB - We investigate the link between declining firm entry, aging incumbent firms and sluggish U.S. productivity growth. We provide a dynamic decomposition framework to characterize the contributions to industry productivity growth across the firm age distribution and apply this framework to the newly developed Revenue-enhanced Longitudinal Business Database (ReLBD). Overall, several key findings emerge: (i) the relationship between firm age and productivity growth is downward sloping and convex; (ii) the magnitudes are substantial and significant but fade quickly, with nearly 2/3 of the effect disappearing after five years and nearly the entire effect disappearing after ten; (iii) the higher productivity growth of young firms is driven nearly exclusively by the forces of selection and reallocation. Our results suggest a cumulative drag on aggregate productivity of 3.1% since 1980. Using an instrumental variables strategy we find a consistent pattern across states/MSAs in the U.S. The patterns are broadly consistent with a standard model of firm dynamics with monopolistic competition. ER -