It Takes a Regime Shift: Recent Developments in Japanese Monetary Policy through the Lens of the Great Depression

Abstract

Last week, we witnessed one of the most exciting developments in monetary policymaking since the 1930s. The Japanese central bank staged an honest-to-goodness regime shift. The Bank of Japan went beyond vague promises and cheap talk. As I will describe in more detail later, it took dramatic actions and pledged convincingly to do whatever it takes to end deflation in Japan. The theoretical reasons why this regime shift may be important are well understood by economists. Persistent deflation and anemic growth suggest that Japan continues to suffer from a shortfall of demand. But their policy interest rate is already at the zero lower bound. Furthermore, riskier, long-term rates are also very low— suggesting that unconventional policies such as large-scale asset purchases are unlikely to do much to further reduce nominal rates. As discussed by Paul Krugman, Gauti Eggertsson and Michael Woodford, and others, if unconventional monetary policy can raise expected inflation, this can push down real interest rates even though nominal rates cannot fall. 1 This, in turn, can raise aggregate demand by stimulating interest