Federal Reserve Board Vice Chairman Janet Yellen is considered a top candidate to replace Ben Bernanke now that Lawrence Summers has withdrawn his name for contention for the Fed's top job. Robert Galbraith/Reuters/Landov hide caption

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Citing what he calls an "acrimonious" confirmation process, Lawrence Summers called President Obama to tell him of his decision not to seek the job of Federal Reserve Chairman Sunday. AFP/AFP/Getty Images hide caption

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Janet Yellen, vice chairwoman of the Federal Reserve, is under consideration to become the first woman to lead the Fed. President Obama reportedly is likely to choose between Yellen and former Treasury Secretary Lawrence Summers. Franck Robichon/EPA/Landov hide caption

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Federal Reserve Chairman Ben Bernanke said Wednesday that a fall in the unemployment rate would not automatically trigger a rise in interest rates. He spoke to the media after the central bank issued a policy update. Susan Walsh/AP hide caption

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Federal Reserve Chairman Ben Bernanke during his Capitol Hill testimony Wednesday before the Joint Economic Committee. Alex Wong/Getty Images hide caption

itoggle caption Alex Wong/Getty Images