This paper discusses four potential sources of lag dynamics in inflation: non-rational behavior, staggered contracting, frictions on price adjustment, and shifts in the long-run inflation anchor of agent expectations (the perceived inflation target). Expressions for inflation dynamics from...

The rational expectations hypothesis for survey and model-based inflation forecasts − from the Survey of Professional Forecasters and the Greenbook respectively − is examined by properly taking into account persistence in the data. The finding of nearunit-root effects in inflation and...