This paper assesses the implications for optimal discretionary monetary policy if the slope of the Phillips curve changes. The paper first derives a ‘switching’ Phillips curve from the optimal pricing decision of a monopolistic firm that faces a changing cost of price adjustment. Two states...

This paper studies the time variation of the Federal Reserve’s inflation target between 1960 and 2004 using both macro and yield curve data. I estimate a New Keynesian dynamic stochastic general equilibrium model in which the inflation target follows a random-walk process. I compare estimation...