This paper investigates how the inclusion of capital in the workhorse new open economy macro model affects its ability to generate volatile and persistent real exchange rates. We show that capital accumulation facilitates intertemporal consumption smoothing and significantly reduces the volatility of the real exchange rate. Nonetheless, monetary and investment-specific technology (IST) shocks still induce more real exchange rate volatility and less consumption comovement than productivity shocks (with or without capital). We find that endogenous persistence is particularly sensitive to the inertia of the monetary policy rule even with persistent exogenous shocks. However, irrespective of whether capital is present, productivity and IST shocks trigger highly persistent real exchange rates, whereas monetary shocks do not. Moreover, we point out that IST shocks tend to generate countercyclical real exchange rates—unlike productivity or monetary shocks—but have the counterfactual effect of also producing excessive investment volatility and countercyclical consumption.

This paper applies panel cointegration tests and panel vector error correction models for 17 OECD countries and considers cross-sectional dependence and structural breaks to investigate the interrelationship between an insurance market's development and real output, controlling for banking activities. We first obtain evidence of a fairly strong long-run equilibrium relationship among them. Second, we find that insurance market development has positive effects on real output and that banking activities have an unfavorable, if not negative, effect on real output. In fact, insurance market activity is much more productive than banking sector activity. Finally, there exists bidirectional causality between insurance premiums and economic growth in the long run, suggesting the existence of the feedback hypothesis for the insurance–output nexus.

We consider an OLG model with emissions arising from production and potentially irreversible pollution. Pollution control consists of the assignment of permits to firms; private agents also can abate pollution. In this setting, we prove that multiple equilibria exist. Due to the possible irreversibility of pollution, the economy can be dragged into both environmental and poverty traps. First, we show that choosing an emission quota at the lowest level beyond a critical threshold is a means to avoid these two types of traps. We also prove that when the agents do not engage in maintenance, a reduction of the quota leads to a reduction in pollution but also to slower capital accumulation. In contrast, when agents do engage in maintenance, a reduction of the quota provides a double dividend.

To identify the labor market reforms that offer the highest payoff, we develop a medium-scale two-country model representing a currency union featuring real and nominal rigidities and heterogeneous labor market frictions. A labor market reform is modeled as a permanent structural change in the labor market institutions. We find that changes in the domestic labor market can have drastic welfare implications for both countries. Welfare improvements are observed when a worker (a firm) is more likely to find a job (a worker) or when jobs are less likely to be destroyed. In addition, labor market heterogeneity has sizeable effects on the level of welfare gains. The more flexible the foreign labor market, the higher its welfare. Finally, we show that (i) the way the monetary authorities conduct their policy has negligible welfare effects and (ii) matching frictions can offset the negative effect of price rigidities in the economy.

The aim of this paper is to discuss the effect on returns to scale on the local determinacy properties of the steady state in a continuous-time two-sector economy with endogenous labor supply and sector-specific externalities. First we show that when labor is inelastic and the elasticity of intertemporal substitution in consumption is large enough, for any configuration of the returns to scale, local indeterminacy is obtained if there is a capital intensity reversal between the private and the social levels. Second, we prove that when labor is infinitely elastic, saddlepoint stability is obtained if the investment good sector has constant social returns, whereas local indeterminacy arises if the investment good sector has increasing social returns and the elasticity of intertemporal substitution in consumption admits intermediate values. Finally, our main conclusion shows that local indeterminacy requires a low elasticity of labor when the investment good has constant social returns, but requires either a low enough or a large enough elasticity of labor when the investment good has increasing social returns.

Government shares in total output are characterized by significant variation across countries. I noticed a strong negative correlation between government consumption shares and the price of government services in terms of private consumption. Motivated by this empirical observation, I developed a neoclassical growth model with added government that is capable of matching the variation in government shares very closely using only relative prices. In addition, I provide empirical evidence showing that the relative price of government consumption increases with income, which is consistent with distortions prevailing in poor countries. These two observations combined imply that government shares tend to be higher in poorer countries.

Models with heterogeneous interacting agents explain macro phenomena through interactions at the micro level. We propose genetic algorithms as a model for individual expectations to explain aggregate market phenomena. The model explains all stylized facts observed in aggregate price fluctuations and individual forecasting behaviour in recent learning-to-forecast laboratory experiments with human subjects (Hommes et al. 2007), simultaneously and across different treatments.

We set up a dynamic stochastic model of a stylized economy comprising a final output sector (with traditional and modern firms) and an intermediate goods sector. It is shown that market integration reduces the volatility of the rate of return to capital invested in modern firms. The induced portfolio decisions of households lead to a reallocation of capital from traditional to modern firms. Despite the presence of a reverse precautionary saving channel, the growth rate unambiguously increases because of the reallocation of capital. Empirical estimates for OECD countries support the theoretical results.

This paper develops a monetary endogenous growth model for an open economy. The salient feature of the model is that it is able to deal with various monetary policy rules, including money growth rate targeting, inflation rate targeting, and nominal income growth rate targeting. It is found that a rise in the pegged rate may either increase or decrease the balanced-growth rate under regimes of both money growth rate targeting and nominal income growth targeting. However, a rise in the pegged rate is sure to depress the balanced-growth rate under the regime of inflation rate targeting. It is also found that money growth rate targeting is fundamentally equivalent to nominal income growth rate targeting if a specific restriction is imposed, and inflation rate targeting is not qualitatively equivalent to either money growth rate targeting or nominal income growth rate targeting.

We build quadratic labor adjustment costs into an otherwise standard New Keynesian model of the business cycle and show that this increases output persistence in a vein similar to that of other models of labor market frictions. Furthermore, we demonstrate the implication of quadratic labor adjustment costs for monetary policy. We show that there is a simple rule determining whether quadratic labor adjustment costs imply a trade-off between stabilizing inflation and output.