We propose a method for solving and estimating linear rational expectations models that exhibit indeterminacy and we provide step-by-step guidelines for implementing this method in the Matlab-based packages Dynare and Gensys. Our method redefines a subset of expectational errors as new fundamentals. This redefinition allows us to treat indeterminate models as determinate and to apply standard solution algorithms. We provide a selection method, based on Bayesian model comparison, to decide which errors to pick as fundamental and we present simulation results to show how our procedure works in practice.
This compilation of summaries of Working Papers released during July-December 1993 is being issued as a part of the Working Paper series. It is designed to provide the reader with an overview of the research work performed by the staff during the period. Authors of Working Papers are normally staff members of the Fund or consultants, although on occasion outside authors may collaborate with a staff member in writing a paper. The views expressed in the Working Papers or their summaries are, however, those of the authors and should not necessarily be interpreted as representing the views of the Fund. Copies of individual Working Papers and information on subscriptions to the annual series of Working Papers may be obtained from IMF Publication Services, International Monetary Fund, 700 19th Street N.W., Washington, D.C. 20431. Telephone: (202) 623-7430 Telefax: (202) 623-7201
This paper examines the dynamics of economic growth. First, it demonstrates that the standard neoclassical growth model with constant elasticity of intertemporal substitution is not consistent with the patterns of development we observe in the real world, once we consider the initial conditions. Second, it examines an alternative growth model, which is consistent with endogenously determined initial conditions and also generates dynamics that are in accord with the historical patterns of growth rates, capital flows, savings rates and labor supply. The alternative model is a generalized version of the neoclassical growth model, with increasing rates of intertemporal substitution due to a Stone-Geary type of utility.
The Q&A in this issue features seven questions about policy options for emerging market countries (by Marcos Chamon, Chris Crowe, and Jun Il Kim); research summaries on “Does Trade and Financial Globalization Cause Income Inequality?” (by Chris Papageorgiou) and “The Current Account of Oil-Exporting Countries (by Irineu E. de Carvalho Filho); an article on the launch of the IMF’s new research journal, IMF Economic Review, and the contents of the upcoming IMF Staff Papers, which the new the new journal will succeed in 2010; an article on the upcoming Tenth Annual Jacques Polak Research Conference; a listing of visiting scholars at the IMF during July–September 2009; and listings of recent IMF Working Papers and Staff Position Notes.
We develop a dynamic stochastic general equilibrium model with financial frictions on both financial intermediaries and goods-producing firms. In this context, due to high leverage of financial intermediaries, balance sheet disruptions in the financial sector are particularly detrimental for aggregate output. We show that the welfare gains from recapitalizing the financial sector in response to large but rare net worth losses are as large as those from eliminating business cycle fluctuations. We also find that these gains are increasing in the size of the net worth loss, are larger when recapitalization funds are raised from the household rather than the real sector, and may increase with a reduction in financial intermediaries idiosyncratic risk.
Assaf Razin, Mr. Prakash Loungani, and Chi-Wa Yuen
Identifying determinants of the output-inflation tradeoff has long been a key issue in business cycle research. We provide evidence that in countries with greater restrictions on capital mobility, a given reduction in the inflation rate is associated with a smaller loss in output. This result is shown to be consistent with theoretical presumption from a version of the Mundell-Fleming model. Restrictions on capital mobility are measured using the IMF’s Annual Report on Exchange Rate Arrangements and Exchange Restrictions. Estimates of the output-inflation tradeoff are taken from previous studies, viz., Lucas (1973) and Ball, Mankiw and Romer (1988).