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Author:Azariadis, Costas 

Working Paper
Self-Fulfilling Credit Cycles

In U.S. data 1981?2012, unsecured firm credit moves procyclically and tends to lead GDP, while secured firm credit is acyclical; similarly, shocks to unsecured firm credit explain a far larger fraction of output fluctuations than shocks to secured credit. In this paper we develop a tractable dynamic general equilibrium model in which unsecured firm credit arises from self-enforcing borrowing constraints, preventing an efficient capital allocation among heterogeneous firms. Unsecured credit rests on the value that borrowers attach to a good credit reputation which is a forward-looking ...
Working Papers , Paper 2015-5

Journal Article
A Taylor Rule for Public Debt

Public debt is an important source of liquidity in economies facing shortages of private credit. It is also a bubble whose current price depends on expectations of what it will buy at future dates. In this article, the author studies how the government must balance the provision of sufficient liquidity against the risk of adverse expectations regarding future debt prices when private liquidity has dried up. The socially optimal balance is captured in a Taylor-like rule that sets a target for real public debt and manages expectations by overreacting to deviations from the target value. ...
Review , Volume 98 , Issue 3 , Pages 227-38

Journal Article
Credit Cycles and Business Cycles

Unsecured firm credit moves procyclically in the United States and tends to lead gross domestic product, while secured firm credit is acyclical. Shocks to unsecured firm credit explain a far larger fraction of output fluctuations than shocks to secured credit. This article surveys a tractable dynamic general equilibrium model in which constraints on unsecured firm credit preclude an efficient capital allocation among heterogeneous firms. Unsecured credit rests on the value that borrowers attach to a good credit reputation, which is a forward-looking variable. Self-fulfilling beliefs over ...
Review , Volume 100 , Issue 1

Report
Complex eigenvalues and trend-reverting fluctuations

Autoregressions of quarterly or annual aggregate time series provide evidence of trend-reverting output growth and of short-term dynamic adjustment that appears to be governed by complex eigenvalues. This finding is at odds with the predictions of reasonably parameterized, convex one-sector growth models, most of which have positive real characteristic roots. We study a class of one-sector economies, overlapping generations with finite life spans of L greater than or equal to 3, in which aggregate saving depends nontrivially on the distribution of wealth among cohorts. If consumption goods ...
Staff Report , Paper 255

Working Paper
Self-fulfilling credit cycles

This paper argues that self-fulfilling beliefs in credit conditions can generate endoge- nously persistent business cycle dynamics. We develop a tractable dynamic general equi- librium model in which heterogeneous firms face idiosyncratic productivity shocks. Capital from less productive firms is lent to more productive ones in the form of credit secured by collateral and also as unsecured credit based on reputation. A dynamic complemen- tarity between current and future credit constraints permits uncorrelated sunspot shocks to trigger persistent aggregate fluctuations in debt, factor ...
Working Papers , Paper 2012-047

Working Paper
Earnings and wealth inequality and income taxation: quantifying the tradeoffs of switching to a proportional income tax in the U.S.

This paper quantifies the steady-state aggregate, distributional, and mobility effects of switching the U.S. to a proportional income tax system.
Working Papers (Old Series) , Paper 9814

Working Paper
The optimal inflation target in an economy with limited enforcement

We formulate the central bank's problem of selecting an optimal long-run inflation rate as the choice of a distorting tax by a planner who wishes to maximize discounted utility for a heterogeneous population of infinitely-lived households in an economy with constant aggregate income. Households are divided into cash agents, who store value in currency alone, and credit agents who have access to both currency and loans. The planner's problem is equivalent to choosing inflation and nominal rates consistent with a resource constraint along with an incentive constraint that ensures credit agents ...
Working Papers , Paper 2007-037

Speech
The optimal inflation target in an economy with limited enforcement

Presented at Indiana University.
Speech , Paper 166

Working Paper
Private and public circulating liabilities

Changes in the legal and technological environment in the U.S. have created the possibility of private banknote issue, or its electronic equivalent. We wish to understand the implications of this possibility for economic performance. Accordingly, we construct and analyze a dynamic general equilibrium model in which privately-issued liabilities may circulate, either by themselves, or alongside a stock of outside money. In each case we provide results on the existence and multiplicity of equilibria, and we characterize local dynamics in a neighborhood of a steady state. Our results support ...
Working Papers , Paper 2000-012

Journal Article
Discretion, rules and volatility

Review , Volume 78 , Issue May , Pages 65-74

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