Still, Ms. Romer strikes an optimistic tone about the prospects for a turnaround in the economy later this year. The Obama administration Thursday offered economic projections in its budget that were rosier than most private-sector forecasts. Defending the projections, Ms. Romer said a turnaround is likely this year as the federal fiscal stimulus package works its way through the economy. Some economists have a much dimmer view, arguing the best the stimulus can do is prevent a recession from turning into depression. “There’s no way we are going to be able to avert a deep and long recession,” says Joshua Shapiro, chief U.S. economist at research firm MFR, Inc. Conrad DeQuadros, senior economist at RDQ Economics in New York, forecasts “a fairly lackluster recovery in 2010,” and projects that unemployment will graze double digits from its current 7.6%.