"The recent financial crisis has demonstrated the dangers of ignoring the factors that led to previous crises, and the effectiveness of the policies designed to deal with them. Over time, these macroeconomic policies have evolved, oscillating between state intervention and a free-market...

Introduction : from business-cycle measurement to macroeconomic theory -- Aggregate demand-- Aggregate supply-- AS-AD equilibrium and the propagation of macroeconomic shocks -- Unemployment fluctuations -- Monetary policy -- Fiscal policy -- The liquidity trap -- Unconventional monetary policies...