Dynamic selection: an idea flows theory of entry, trade and growth

Thomas Sampson

LSE Research Online Documents on Economics from London School of Economics and Political Science, LSE Library

Abstract: This paper develops an idea flows theory of trade and growth with heterogeneous firms. New firms learn from incumbent firms, but the diffusion technology ensures entrants learn not only from frontier technologies, but from the entire technology distribution. By shifting the productivity distribution upwards, selection on productivity causes technology diffusion and this complementarity generates endogenous growth without scale effects. On the balanced growth path, the productivity distribution is a traveling wave with an increasing lower bound. Growth of the lower bound causes dynamic selection. Free entry mandates that trade liberalization increases the rates of technology diffusion and dynamic selection to offset the profits from new export opportunities. Consequently, trade integration raises long-run growth. The dynamic selection effect is a new source of gains from trade not found when firms are homogeneous. Calibrating the model implies that dynamic selection approximately triples the gains from trade relative to heterogeneous firm economies with static steady states.

Keywords: international trade; firm heterogeneity; technology diffusion; endogenous growth (search for similar items in EconPapers)
JEL-codes: F12 O41 (search for similar items in EconPapers)
Pages: 52 pages
Date: 2014-08-01
New Economics Papers: this item is included in nep-bec, nep-cse, nep-gro and nep-int
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

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http://eprints.lse.ac.uk/60363/ Open access version. (application/pdf)

Related works:
Journal Article: Dynamic Selection: An Idea Flows Theory of Entry, Trade, and Growth (2016)
Working Paper: Dynamic selection: an idea flows theory of entry, trade and growth (2016)
Working Paper: Dynamic Selection: An Idea Flows Theory of Entry, Trade and Growth (2014)
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Persistent link: https://EconPapers.repec.org/RePEc:ehl:lserod:60363

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