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This paper develops a simple macroeconomic model that shows that combining capital market imperfections together with unequal access to investment opportunities across individuals can generate endogenous and permanent fluctuations in aggregate GDP, investment, and interest rates. Reducing inequality of access may be a necessary condition for macroeconomic stabilization. Moreover, countercyclical fiscal policies have a role to play: in our model savings are underutilized in slumps because of the limited debt capacity of potential investors. Therefore, the government should issue public debt during recessions in order to absorb those idle savings and finance investment subsidies or tax cuts for investors.

ABSTRACTUsing cross‐country panel data over the period 1996–2012, this paper examines the impact of financial development on macroeconomic volatility using GMM estimators. In contrast to the linear relationship identified in many previous studies, we present robust evidence suggesting that the effect of financial development on macroeconomic volatility is nonlinear and U‐shaped. We also investigate the potential differences between developed and developing countries. The results of the paper add new evidence and shed interesting insights into the recent debate on the role of finance in macroeconomic fluctuations.

ABSTRACTThis paper explores the effects that varying degrees of international openness have on macroeconomic volatility. The analysis is conducted for a two‐symmetric‐country world under three levels of international integration: that of a closed economy, a financial autarky, and full financial integration. Different degrees of trade openness are considered in the form of home biases, while the economy is left vulnerable to total factor productivity and innovation shocks. Full financial integration is found to reduce firm‐size volatility and volatility in the mass of operative firms following a productivity shock and to increase them after an innovation shock. Moreover, the interaction between international sharing of profits and terms of trade transmissions determines the non‐linear behaviour of consumption‐to‐output ratio volatility found in empirical studies.

We examine the implications of government size for macroeconomic volatility in a standard New‐Keynesian model with multiple shocks. Larger government size mitigates volatility arising from technology, preference, mark‐up and monetary policy shocks, but amplifies that emanating from expenditure shocks. The degree of mitigation‐amplification varies with the size of government, which opens up the possibility of a non‐monotone relationship between volatility and government size. When we estimate the model on US data we find that the relationship is negative around the current US size, but it could eventually turn positive as the ratio of government spending to GDP increased. The location of the turning point in this relationship depends mainly on the type of private expenditure crowded out by higher government spending and on the degree of price stickiness.

Macroeconomic Volatility and Welfare in Developing Countries: An Introduction Norman V. Loayza, Romain Ranciere, Luis Serven, ` and Jaume Ventura Macroeconomic volatility, both a source and a reflection of underdevelopment, is a fundamental concern for developing countries. This article provides a brief overview of the recent literature on macroeconomic volatility in developing countries, highlighting its causes, consequences, and possible remedies. to reduce domestic policy-induced macroeconomic volatility by controlling the level and variability of fiscal expenditures, by keeping inflation low and stable, and by avoiding price rigidity (including that of the exchange rate), which eventually leads to drastic adjustments. The ability to conduct countercyclical fiscal policies is crucial, and it depends largely on the ability of the authorities to reduce public indebtedness to internationally acceptable levels, establish a record of saving in good times to provide for bad times, and develop credibility that forestalls perceptions of wasteful spending and default risk. Governments can reduce financial fragilities and deepen financial markets by eliminating implicit insurance schemes (such as fixed exchange rate regimes) and credit restrictions that distort the valuation of financial assets and liabilities. Following Ehrlich Becker's (1972) classic "comprehensive insurance" framework, three possible options can be identified: Self-protection (reducing the exposure to risk through, for instance, limited trade and financial openness). Primiceri and van Rens (2006*) explore the source of this increase by examining the consumption behavior of a large panel of individuals, finding that their behavior is consistent with an increase in the persistence of individual income shocks. Loayza and Raddatz (2007*) analyze how financial openness and trade openness, as well as product-market flexibility, factor-market flexibility, and domestic financial development, influence the impact of terms of trade shocks on output. To obtain their measure of policy volatility, the authors construct a measure of exogenous policy decisions unrelated to the state of the economy and take the standard deviation of this measure as a proxy for policy volatility. Even so, the literature and the lessons from the Barcelona conference reviewed here can provide some elements of sensible policy recommendations and identify areas where research is especially needed.