For a given frequency of price changes, the real eects of a monetary shock are smaller ifadjusting rms are disproportionately likely to have last set their prices before the shock. Thistype of selection for the age of prices provides a complete characterization of the nature ofpricing frictions...

When policy rules are changed, the effect of nominal rigidities should be modelled through endogenous pricing rules. We endogenize Taylor (1979) type pricing rule to examine the output effects of monetary disinflations. We derive optimal fixed-price time-dependent rules in inflationary steady...

The real effects of an imperfectly credible disinflation depend critically on the extent of price rigidity. Therefore, the study of how the policymaker's credibility affects the outcome of an announced disinflation should not be dissociated from the analysis of the determinants of the frequency...

The real effects of an imperfectly credible disinflation depend critically on the extent of price rigidity. Therefore, the study of how the policymaker's credibility affects the outcome of an announced disinflation should not be dissociated from the analysis of the determinants of the frequency...