We show that under indeterminacy aggregate demand shocks are able to explain not only aspects of actual °uctuations that standard RBC models predict fairly well, but also aspects of actual °uctuations that standard RBC models cannot explain, such as the hump-shaped, trend reverting impulse...

We formalize the Keynesian insight that aggregate demand driven by sentiments can generate output fluctuations under rational expectations. When production decisions must be made under imperfect information about demand, optimal decisions based on sentiments can generate stochastic...

We formalize the Keynesian insight that aggregate demand driven by sentiments can generate output fluctuations under rational expectations. When production decisions must be made un- der imperfect information about aggregate demand, optimal decisions based on sentiments can generate stochastic...