"It is often argued that changes in expectation are an important driving force of the business cycle. However, it is well known that changes in expectations cannot generate positive co-movement between consumption, investment and employment in the most standard neo-classical business cycle...

Most macroeconomic models, both fully structural models as well as SVAR models, view economic outcomes as the product of a combination of endogenous and exogenous dynamic forces. In particular, the exogenous forces are generally modeled as a set of linearly independent dynamics processes. In...

There is a long tradition in macroeconomics suggesting that market imperfections may explain why economies repeatedly go through periods of booms and busts, with booms sowing the seeds of the subsequent busts. This idea can be captured mathematically as a limit cycle. For several reasons, limit...

How to use an unexpected increase in tax revenues (tax pots) has been an important issue in most OECD countries in the second half of the 90’s, the question being more precisely what to do with those windfall revenues: decreasing taxes, debt, increasing expenditures? In this paper, we study...

In this Paper we measure the welfare cost of fluctuations in a simple representative agent economy with non-clearing markets. The market friction we consider involves price rigidities and a voluntary exchange-rationing scheme. These features are incorporated into an otherwise standard...

In this Paper, we ask whether our empirical and theoretical knowledge about the effect of monetary policy shocks is robust to the choice of the period length. We think that such a question is particularly relevant in the monetary literature, as frictions are often introduced under the form of a...