This paper investigates a dynamic general equilibrium model with search. In particular, search externalities are reßected by an increasing returns to scale matching function, which may imply an indeterminate equilibrium. Hence, the model is capable to generate business ßuctuations, driven by...

DSGE-models have become important tools of analysis not only in academia but increasingly in the board rooms of central banks. The success of these models has much to do with the coherence of the intellectual framework it provides. The limitations of these models come from the fact that they...

The dynamic stochastic general equilibrium (DSGE) models used to study business cycles typically assume that exogenous disturbances are independent first-order autoregressions. This paper relaxes this tight and arbitrary restriction by allowing for disturbances that have a rich contemporaneous...

Capitalism is characterized by booms and busts. Periods of strong growth in output alternate with periods of declines in economic growth. Every macro-economic theory should attempt to explain these endemic business cycle movements. In this paper I present two paradigms that attempt to explain...

I distinguish two types of macroeconomic models. The first type are top-down models in which some or all agents are capable of understanding the whole picture and use this superior information to determine their optimal plans. The second type are bottom-up models in which all agents experience...

Chari, Kehoe, and McGrattan (2007) (CKM) show that a large class of dynamic stochastic general equilibrium (DSGE) models with various frictions and shocks is observationally equivalent to a benchmark real business cycle (RBC) model with correlated “wedges” in the RBC model’s first-order...

I distinguish two types of macroeconomic models. The first type are top-down models in which some or all agents are capable of understanding the whole picture and use this superior information to determine their optimal plans. The second type are bottom-up models in which all agents experience...

It is often assumed that wedges evolve according to the VAR (1) in the applications of business cycle accounting (BCA). However, recent research finds that the wedges have no VAR (1) representation in many dynamic stochastic general equilibrium (DSGE) economies, and that there might be a...

This paper examines in how far the DSGE model which is often dubbed the New Keynesian Consensus is compatibel with a Post-Keynesian or traditional Keynesian understanding of the economy. It is argued that while at first sight DSGE models seem to include a lot of traditional Keynesian or even...

This paper presents a non-Malthusian theory of long-term development We model the interplay between the process of human capital formation, technological progress, and the biological constraint of finite lifetime expectancy. All these processes are interdependent and determined endogenously. The...