We confront five stylized facts related to sovereign default: 1) the presence of serial defaulters; 2) the prevalence of partial over complete default; 3) the counter-cyclicality of default; 4) non-linearity of sovereign spreads; and 5) heterogeneous outcomes among serial defaulters. In a model...

We derive a very general ("Janus") money demand function, which reflects backward and forward-looking habit formation. This generality offers an explanation for the breakdown of money-demand functions and policy relevance of monetary aggregates. Integrating our Janus money demand into a...

The Solow condition is examined in an intertemporal model that blends the shirking and the turnover models of efficiency wages with managerial supervision. It is shown that the Solow condition does not hold when shirking and turnover costs are considered. The Solow condition can be a possible...

This paper derives an optimal investment function that combines Tobin's q with Goodwin's nonlinear accelerator. It provides microfoundations to the backward looking behavior of investment in Goodwin's model, and simultaneously allows the study of Tobin's q into a business cycle model

This paper analyses an overlapping generations model with absolute bequest motive. It is shown that the widely accepted criterion to verify dynamic efficiency does not apply to this case. In our model the social planner maximizes welfare by choosing a capital stock larger than the golden rule...

The intertemporal substitution model of labor supply has been based on closed economy models. This paper studies the intertemporal substitution hypothesis in an open economy. It derives the long run labor supply as a function of the real wage, real interest rate and real exchange rate from a...

The derivation of the Balassa-Samuelson effect allows for different empirical specifications that may have important economic implications. Problems related to spurious regression could arise from the mixed order of integration of the series used and from the lack of a long run stable...

This paper proposes a new modeling strategy as regards the definition of an optimal level of unemployment benefits. While the traditional methodology privileges labor market equilibrium to derive optimal employment, wage and unemployment benefit levels, we present a model in which the optimal...

A naive model of cannibalism assumes that it decreases intra-species competition, increasing per capita supply of resources. As a result, there is a cycle between prey population and carrying capacity of the environment, which oscillates around cannibals' population. The model is applied to...

This paper examines a model with habit formation in consumption. The model leads to higher equilibrium values in consumption, output, capital accumulation and labor supply than the neoclassical growth model with elastic labor supply. Comparative static analysis shows that an increase in the...