Bernanke is an eminently qualified economist. You can find many of his papers and speeches at the Fed website. In discussing some of the causes of the Great Depression and how the Fed did or did not contribute to it, I posted the following a while back on another thread...
...I was perusing some of new Fed Chairman Bernanke's speeches and papers, and what did I find but his 2004 comments (when he was still on the Board) concerning the Great Depression! I'll cut n paste a couple that illustrate the points that I made earlier. Note his comments that, for quite a long time, there was considerable disagreement among economists as to the causes of the depression...
"During the Depression years and for many decades afterward, economists disagreed sharply on the sources of the economic and financial collapse of the 1930s. In contrast, during the past twenty years or so economic historians have come to a broad consensus about the causes of the Depression."
...
"Deflation, like inflation, tends to be closely linked to changes in the national money supply, defined as the sum of currency and bank deposits outstanding, and such was the case in the Depression. Like real output and prices, the U.S. money supply fell about one-third between 1929 and 1933, rising in subsequent years as output and prices rose."
...
"While the fact that money, prices, and output all declined rapidly in the early years of the Depression is undeniable, the interpretation of that fact has been the subject of much controversy. Indeed, historically, much of the debate on the causes of the Great Depression has centered on the role of monetary factors, including both monetary policy and other influences on the national money supply, such as the condition of the banking system. Views have changed over time. During the Depression itself, and in several decades following, most economists argued that monetary factors were not an important cause of the Depression."
...
"To support their view that monetary forces caused the Great Depression, Friedman and Schwartz revisited the historical record and identified a series of errors--errors of both commission and omission--made by the Federal Reserve in the late 1920s and early 1930s. According to Friedman and Schwartz, each of these policy mistakes led to an undesirable tightening of monetary policy, as reflected in sharp declines in the money supply. Drawing on their historical evidence about the effects of money on the economy, Friedman and Schwartz argued that the declines in the money stock generated by Fed actions--or inactions--could account for the drops in prices and output that subsequently occurred."
The entire text is at...
http://www.federalreserve.gov/boardd...22/default.htm