The “Depression of 1921” has been receiving a lot of
attention recently (Krugman,
Selgin,
Murphy,
and Sumner)
mostly in response to James Grant’s The
Forgotten Depression:1921: The Crash That Cured Itself. The argument of the
book is that the economy recovered more quickly because neither the federal
government nor the Federal Reserve attempted to pursue activist policies. I am
skeptical that 1921 is a useful case to generalize from.
It was a post war recession, much like the one after World
War II. Most business cycle movements have been associated with busts after
periods of credit expansion (see the recent work of Alan Taylor et al). In those
cases it was households and businesses that borrowed and spent during the boom.
Consequently, when the bust comes, businesses and consumers struggle to repay
their debts. Businesses fail and consumers default. Even consumers who do
not go bankrupt reduce their current spending to avoid default (see Martha
Olney). As businesses and households default the value of bank assets fall and
banks fail. The bank failures result in decreases in the money supply (Friedman
and Schwartz) and disintermediation (Bernanke). In other words, it creates a real mess when people take on excessive amounts of debt, especially when they use that debt to bid up the prices of assets like stocks or real estate.
In terms of increases in output and prices, war time booms
look similar to credit fueled booms, but the government is the one borrowing
and spending. The end of the boom does not necessarily lead to a financial
crisis or reductions in consumption and investment. Granted government borrowing can also create a mess, particulalry if people begin to doubt its willingness or ability to pay, but that hasn't really been an issue for the U.S.
I also have a problem with calling this a depression. I know
that there is no universally accepted definition of the term depression. And I
know that Grant is not the first to refer to this episode as a depression. But
we completely lose any distinction between a recession and a depression if this
was a depression. Neither the length nor the severity of the decline in real
GDP warrant the term depression.