Fed staff research anchors subtle shift that could lead rates higher

WASHINGTON (Reuters) - The U.S. Federal Reserve should be ready to lift interest rates for a longer period or even more quickly than currently expected to insure against a jump in inflation in a U.S. economy operating in the vicinity of full employment.That is the message that has been percolating up from senior central bank staff economists to policymakers including Fed Chair Jerome Powell in research that has helped inform a subtle shift in how Powell plans to steer policy amid growing..