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Introduction. Part 0: Three paradigms for analyzing growth policy. • AK paradigm :. • AK paradigm :. a “one-size-fits-all” approach to growth → applies to frontier countries and to countries far below the frontier. • Schumpeterian paradigm :. • Schumpeterian paradigm (continued) :.
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• AK paradigm: • a “one-size-fits-all” approach to growth → applies to frontier countries and to countries far below the frontier
• Product variety paradigm (continued): • as in Schumpeterian model, equilibrium R&D and innovation rates result from a research arbitrage equation • but only one kind of innovation, always resulting in the same kind of new product → hard to distinguish between frontier innovation and implementation • in fact, hard to talk about technology frontier, distance to frontier, appropriate policy favoring one or another kind of innovation • no role for exit and turnover
• What do the three paradigms say about entry/exit and growth?
Entry and Exit in the Schumpeterian Model • when innovation takes place step by step, then increased entry (threat): → induces firms close to the frontier to invest more in order to escape entry → discourages firms far below the frontier from investing in innovation
Entry and Exit in the Schumpeterian Model(continued) → exit can be positively correlated with growth as it results from more productive firms replacing lower-performing incumbents
Figure 1: Entry and TFP growth near and further behind the technological frontier:
Table A1: Foreign expansion, plant exit in supplying industries, and TFP growth of domestic incumbents:
• Education and growth cross-US states: (Aghion-Boustan-Hoxby-Vandenbussche, 2005)
Results: Educ. investment measured by spending; migration allowed
Conclusion: • Unlike AK and the product variety model, the Schumpeterian growth paradigm produces testable predictions as to how: • competition/entry/exit • the allocation of education funding • macropolicy should affect growth, and differently so according to the country’s or sector’s distance to frontier