We estimate monetary policy reaction functions for France, Germany, Italy, the United Kingdom, and the United States using a Markov-switching model that incorporates switching in the monetary policy regime as well as an independent switching process for shifts in the state of the economy....

In this paper we introduce and test the hypothesis that the relation between inflation and unemployment has been in many countries subject to a significant change in the early 1990's after the disinflation period. That period began between 1975 and 1980 after the first (or the second) oil price...