Roger E. A. Farmer

Bio: Roger E. A. Farmer is an academic researcher from National Institute of Economic and Social Research. The author has contributed to research in topics: Unemployment & Rational expectations. The author has an hindex of 41, co-authored 174 publications receiving 8267 citations. Previous affiliations of Roger E. A. Farmer include University of Pennsylvania & Center for Economic and Policy Research.

Indeterminacy and Increasing Returns

Abstract: We investigate properties of the one-sector growth model with increasing returns under two organizational structures capable of reconciling the existence of aggregate increasing returns with competitive behavior by firms. The first involves input externalities; the second involves monopolistic competition. We show, for parameters in close accord with recent literature on real business cycles, that the model displays an indeterminate steady state that can be exploited to generate a model of business fluctuations driven by self-fulfilling beliefs. In our first class of models, growth is generated by exogenous increases in factor productivity. In the second class the marginal product of capital is large enough for endogenous growth. Journal of Economic Literature Classification Numbers: E00, E3, O40.

Indeterminacy and sunspots in macroeconomics

Abstract: This chapter gives an overview of the recent literature on indeterminacy and sunspots in macroeconomics. It discusses of some of the conceptual and the technical aspects of this literature, and provides a simple framework for illustrating the mechanisms of various dynamic equilibrium models that give rise to indeterminate equilibria. The role of external effects, monopolistic competition, and increasing returns in generating indeterminacy is explored for one-sector and multi-sector models of real business cycles and of economic growth. Indeterminacy is also studied in monetary models, as well as in models where monetary and fiscal policy are endogenous and determined by feedback rules. Particular attention is paid to the empirical plausibility of these models and their parametrizations in generating indeterminate equilibria. An overview of calibrated macroeconomic models with sunspot equilibria is given, and their successes and shortcomings in matching properties of data are assessed. Finally some issues regarding the selection of equilibria, the observable implications, and difficulties of forecasting that arise in such models are briefly addressed.

Indeterminacy and sunspots in macroeconomics

Abstract: This chapter gives an overview of the recent literature on indeterminacy and sunspots in macroeconomics. It discusses of some of the conceptual and the technical aspects of this literature, and provides a simple framework for illustrating the mechanisms of various dynamic equilibrium models that give rise to indeterminate equilibria. The role of external effects, monopolistic competition, and increasing returns in generating indeterminacy is explored for one-sector and multi-sector models of real business cycles and of economic growth. Indeterminacy is also studied in monetary models, as well as in models where monetary and fiscal policy are endogenous and determined by feedback rules. Particular attention is paid to the empirical plausibility of these models and their parametrizations in generating indeterminate equilibria. An overview of calibrated macroeconomic models with sunspot equilibria is given, and their successes and shortcomings in matching properties of data are assessed. Finally some issues regarding the selection of equilibria, the observable implications, and difficulties of forecasting that arise in such models are briefly addressed.

Substitution, Risk Aversion, and the Temporal Behavior of Consumption and Asset Returns: A Theoretical Framework

Abstract: This paper develops a class of recursive, but not necessarily expected utility, preferences over intertemporal consumption lotteries An important feature of these general preferences is that they permit risk attitudes to be disentangled from the degree of intertemporal substitutability Moreover, in an infinite horizon, representative agent context these preference specifications lead to a model of asset returns in which appropriate versions of both the atemporal CAPM and the intertemporal consumption-CAPM are nested as special cases In our general model, systematic risk of an asset is determined by covariance with both the return to the market portfolio and consumption growth, while in each of the existing models only one of these factors plays a role This result is achieved despite the homotheticity of preferences and the separability of consumption and portfolio decisions Two other auxiliary analytical contributions which are of independent interest are the proofs of (i) the existence of recursive intertemporal utility functions, and (ii) the existence of optima to corresponding optimization problems In proving (i), it is necessary to define a suitable domain for utility functions This is achieved by extending the formulation of the space of temporal lotteries in Kreps and Porteus (1978) to an infinite horizon framework A final contribution is the integration into a temporal setting of a broad class of atemporal non-expected utility theories For homogeneous members of the class due to Chew (1985) and Dekel (1986), the corresponding intertemporal asset pricing model is derived

An estimated dynamic stochastic general equilibrium model of the euro area

Abstract: This paper develops and estimates a dynamic stochastic general equilibrium (DSGE) model with sticky prices and wages for the euro area. The model incorporates various other features such as habit formation, costs of adjustment in capital accumulation and variable capacity utilization. It is estimated with Bayesian techniques using seven key macroeconomic variables: GDP, consumption, investment, prices, real wages, employment, and the nominal interest rate. The introduction of ten orthogonal structural shocks (including productivity, labor supply, investment, preference, cost-push, and monetary policy shocks) allows for an empirical investigation of the effects of such shocks and of their contribution to business cycle e uctuations in the euro area. Using the estimated model, we also analyze the output (real interest rate) gap, dee ned as the difference between the actual and model-based potential output (real interest rate). (JEL: E4, E5)

An estimated dynamic stochastic general equilibrium model of the euro area. NBB Working Paper Nr. 35

Abstract: This paper develops and estimates a dynamic stochastic general equilibrium (DSGE) model with sticky prices and wages for the euro area. The model incorporates various other features such as habit formation, costs of adjustment in capital accumulation and variable capacity utilisation. It is estimated with Bayesian techniques using seven key macro-economic variables: GDP, consumption, investment, prices, real wages, employment and the nominal interest rate. The introduction of ten orthogonal structural shocks (including productivity, labour supply, investment, preference, cost-push and monetary policy shocks) allows for an empirical investigation of the effects of such shocks and of their contribution to business cycle fluctuations in the euro area. Using the estimated model, the paper also analyses the output (real interest rate) gap, defined as the difference between the actual and model-based potential output (real interest rate).

Monetary Policy, Business Cycles, and the Behavior of Small Manufacturing Firms

Abstract: We analyze the response of small versus large manufacturing firms to monetary policy. The goal is to obtain evidence on the importance of financial propagation mechanisms for aggregate activity. We find that small firms account for a significantly disproportionate share of the manufacturing decline that follows tightening of monetary policy. They play a surprisingly prominent role in the slowdown of inventory demand. Large firms initially borrow to accumulate inventories. After a brief period, small firms quickly shed inventories. We attempt to sort financial from nonfinancial explanations with evidence on asymmetries and on balance sheet effects on inventory demand across size classes.

Capital-Market Imperfections and Investment

Abstract: Over the past decade, a number of researchers have extended conventional models of business fixed investment to incorporate a role for financial constraints' in determining investment. This paper reviews developments and challenges in this empirical research, and uses advances in models of information and incentive problems to motivate those developments and challenges. First, I describe analytical underpinnings of models of capital-market imperfections in the investment process, and illustrate the principal testable implications of those models. Second, I motivate tests and describe and critique existing empirical studies. Third, the review considers applications of the underlying models to a range of investment activities, including inventory investment, R&D, employment demand, pricing by imperfectly competitive firms, business formation and survival, and risk management. Fourth, I discuss implications of this research program for analysis of effects of investment on monetary policy and tax policy. Finally, I examine some potentially fruitful avenues for future research.