This paper uses a structural, large dimensional factor model to evaluate the role of ‘news’ shocks (shocks with a delayed effect on productivity) in generating the business cycle. We find that (i) existing small-scale VECM models are affected by ‘non-fundamentalness’ and therefore fail to recover the correct shock and impulse response functions; (ii) news shocks have a limited role in explainin...

This paper shows that in stochastic one-sector growth models, if the production function does not satisfy the Inada condition at zero, any feasible path converges to zero with probability one provided that the shocks are sufficiently volatile. This result seems significant since, as we argue, the Inada condition at zero is difficult to justify on economic grounds. Our convergence result is exte...

In this paper, we develop a framework to model and analyze systems that are subject to dependent, competing degradation processes and random shocks. The degradation processes are described by stochastic differential equations, whereas transitions between the system discrete states are triggered by random shocks. The modeling is, then, based on Stochastic Hybrid Systems (SHS), whose state space ...

In this paper we develop methods to analyze the long run behavior of models with multiple stable equilibria, and we apply them to a well known model of learning in games. Our methods apply to discrete-time continuous-state stochastic models, and as a particular application in we study a model of stochastic fictitious play. We focus on a variant of this model in which agents’ payoffs are subject...

In this paper we develop methods to analyze the long run behavior of models with multiple equilibria, and we apply them to a well known model of learning in games. Our methods apply to discrete-time continuous-state stochastic models, and as a particular application in we study a model of stochastic fictitious play. We focus on a variant of this model in which agents’ payoffs are subject to ran...

Monetary and fiscal policy interactions are studied in a stochastic maximizing model. Policy is ‘active’ or ‘passive’ depending on its responsiveness to government debt shocks. Schemes for financing deficits and, therefore, the existence and uniqueness of equilibria depend on two policy parameters. The model is used to: (i) characterize the equilibria implied by various financing schemes, (ii) ...

the aim of this paper is to investigate the existence of the new non-ricardian regime policy in iranian economy. we detected signs of the non-ricardian regime from quarterly data of 1369 to 1391. to investigate further a dynamic stochastic general equilibrium model is designed to estimate the fiscal and monetary parameters using a bayesian approach. our results indicated a passive monetary poli...

This paper aims at explaining the dynamics of labor markets in Spain, especially the high persistence of unemployment and the Beveridge curve. We build a stochastic dynamic general equilibrium matching model, which assumes failures in the matching between vacancies and unemployed. We calibrate the model for the Spanish economy and simulate it considering two sources of exogenous shocks: a techn...