Causes of the Great Depression
Second, there are the monetarists, who believe that the Great Depression started as an ordinary recession, but that significant policy mistakes by monetary authorities (especially the Federal Reserve) caused a shrinking of the money supply which greatly exacerbated the economic situation, causing a recession to descend into the Great Depression. Related to this explanation are those who point to debt deflation causing those who borrow to owe ever more in real terms.
Causes of the Great Depression
More recent research, by economists such as Temin, Ben Bernanke, and Barry Eichengreen, has focused on the constraints policy makers were under at the time of the Depression. In this view, the constraints of the inter-war gold standard magnified the initial economic shock and were a significant obstacle to any actions that would ameliorate the growing Depression. According to them, the initial destabilizing shock may have originated with the Wall Street Crash of 1929 in the U.S., but it was the gold standard system that transmitted the problem to the rest of the world.