DEBT POLICY RULE, PRODUCTIVE GOVERNMENT SPENDING, AND MULTIPLE GROWTH PATHS: A NOTE

Alexandru Minea and Patrick Villieu

Macroeconomic Dynamics, 2013, vol. 17, issue 4, 947-954

Abstract: In a very interesting endogenous growth model, Futagami, Iwaisako, and Ohdoi [Macroeconomic Dynamics 12 (2008), 445–462] study the long-run growth effect of borrowing for public investment. Their model exhibits (i) the multiplicity of balanced growth paths (BGPs) in the long run (two steady states) and (ii) a possible indeterminacy of the transition path to the high-growth BGP. The goal of this note is to show that their results depend on a sharp assumption, namely the definition of the public debt target as a ratio to private capital. If the target is defined in terms of public debt–to–GDP ratio, both results vanish: the model exhibits a unique BGP (no multiplicity) and the adjustment path to this unique equilibrium is determinate (no indeterminacy).

Date: 2013
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