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...

We consider a simple variant of the standard real business cycle model in which shareholders hire a self-interested executive to manage the firm on their behalf. A generic family of compensation contracts similar to those employed in practice is studied. When compensation is convex in the firm's...

This paper shows under indeterminacy and tax evasion, an increase in corporate, labor or income tax rates pushes the economy into an expansionary pattern. These effects are reversed when the steady state is saddle-path stable

This paper introduces underground activities and tax evasion into a one sector dynamic general equilibrium model with external effects. The model presents a novel mechanism driving the self-fulfilling prophecies, which is triggered by the reallocation of resources to the underground sector to...

This paper shows that underground activities and tax evasion may be another possible source of local indeterminacy of the equilibrium path. We derive necessary and sufficient conditions for equilibrium path to be locally indeterminate under tax evasion and underground activities. Moreover, the...

This paper estimates a nonlinear Threshold-VAR to investigate if a Keynesian liquidity trap due to a speculative motive was in place in the U.S. Great Depression and the recent Great Recession. We find clear evidence in favor of a breakdown of the liquidity effect after an unexpected increase in...

I study whether monetary gold hoarding was the main cause of the Great Depression in a structural VAR analysis. The notion that monetary forces played an important role in bringing about the depression is well established in the narrative literature, but has more recently met some skepticism by...