Despite sound theoretical foundations a drawback of the New Keynesian model is its inability to generate adequate persistence in the variables it seeks to explain. A common solution is to modify the model to include lagged variables. However, this is unsatisfactory as many such modifications...

The paper investigates the relationship between relative price movements and changes in the aggregate price level using monthly data on Finland’s Consumer Price Index and its components from the period covering the past eight and a half years. This was a period of very low inflation. The rate...