Low inflation over long periods is the sign of an effective central bank. The authors suggest that a large fraction of the worldwide decline in inflation since the early 1980s results from an international movement toward more independent central banks.

If a central bank adopted a zero inflation target, it would, in practice, occasionally deviate up and down from that rate, and the economy would experience episodes of mild inflation and deflation. Is deflation-a decrease in the level of prices-a cause for concern? Deflation can cause output to...

Observations that the Phillips curve may be deviating from historical norms are important to policymakers because deviations would imply that more or less output has to be sacrificed to achieve a permanent reduction in long-term inflation. But we argue that recent economic shocks and a shift in...

Is inflation (in the often-quoted words of Milton Friedman) "always and everywhere a monetary phenomenon"? Some say no, arguing that inflation is controlled not only by the central bank but also by the fiscal authority. This Commentary authors explore their argument, known as the fiscal theory...

This article traces the consequences of an energy shock on the economy under two different monetary policy rules: (i) a standard Taylor rule, where the Fed responds to inflation and the output gap, and (ii) a Taylor rule with inertia, where the Fed moves slowly to the rate predicted by the...

An analysis of the quantitative effects of agency costs in a real business cycle model, showing that these costs can explain why output growth displays positive autocorrelation at short horizons.

It is well known that sunspot equilibria may arise under an interest-rate operating procedure in which the central bank varies the nominal rate with movements in future inflation (a forward-looking Taylor rule). This paper demonstrates that these sunspot equilibria may be learnable in the sense...

There is growing evidence that the empirical Phillips curve within the US has changed significantly since the early 1980’s. In particular, inflation persistence has declined sharply. The paper demonstrates that this decline is consistent with a standard Dynamic New Keynesian (DNK) model in...

Should monetary policy respond to asset prices? This paper analyzes a general equilibrium model with imperfect capital markets and rigid nominal wages. Within the context of this model, there is a natural role for the benevolent central bank to dampen the real effects of asset price movements.

This paper integrates money into a real model of agency costs. Money is introduced by imposing a cash-in-advance constraint on a subset of transactions. The underlying real model is a standard real-business-cycle model modified to include endogenous agency costs. The paper’s chief contribution...