"There is no doubt that Ben Bernanke's views on zero-bound policy have changed over time. ?Once, he called for targets for long-term interest rates a "policy I personally prefer"; later, he "agreed 100%" with opposition to that policy. ?Bernanke once advocated a 3-4% inflation target for Japan; as Fed chair, he says "that's not a direction we're interested in pursuing."...he no longer argues that a central bank can easily overcome the zero-bound problem "if the will to do so exists."?
At one level, the primary reason for these changes is also clear: Bernanke was influenced by the work of the Fed staff...?
...The puzzle about this history is why Bernanke so quickly and completely dropped his previous views and adopted those of Fed Staff. ?We cannot be sure, but social psychology suggests two possible factors: groupthink and Bernanke's shy personality."I am a big fan of Bernanke's scholarly work, and as a result was thrilled when he was appointed Fed Chair. ?My understanding, however, is that he hasn't a whiff of arrogance about him, a characteristic that makes him a wonderful scholar and, from all I can tell, a wonderful human being. ?But Chairman Bernanke really is the smartest guy in the room, and it would be nice if he remembered that. If the views he (along with Mark Gertler) developed over many years informed monetary policy, we would all be better off.
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