Issues of inflation measurement are fundamental to the conduct of monetary policy. Price indices form the foundation of … mechanism for holding independent policymakers accountable. To shed some light on the role of inflation measurement, the annual …: Price indices used by central banks; the role of wages and productivity in inflation policy; and the measurement and …

monetary policymaking. First, we discuss why trimmed means provide the best measure of core inflation. Second, we outline how … rigidities impede policymakers' ability to control inflation. And third, we describe how alternative shock/rigidity combinations … create inflation's grease (whereby it improves economic efficiency by speeding adjustment) and sand effects (whereby it …