In contrast to the notion that the exchange-rate regime is non-neutral, there is little evidence that EMU has changed the European business cycle. In fact, we find the volatility of macroeconomic fundamentals largely unchanged before and after the introduction of the euro. Exceptions are a...

We assess the contribution of "undue optimism" (Pigou) to short-run fluctuations. In our analysis, optimism pertains to total factor productivity which determines economic activity in the long run, but is not contemporaneously observed by market participants. In order to recover optimism shocks...

Expectations matter for economic activity. To the extent that they are fundamentally unwarranted, they represent "undue optimism or pessimism" (Pigou, 1927). In this paper, we identify empirically the effect of undue optimism/pessism ("optimism shocks") on economic activity. In a first step, we...