This is an entry for The New Palgrave Dictionary of Economics, 2nd Ed.

Economists working with numerical solutions to the optimal consumption/saving problem under uncertainty have long known that there are quantitatively important interactions between liquidity constraints and precautionary saving behavior This paper provides the analytical basis for those...

We analyze monetary policy in a New Keynesian model with durable and non-durable goods each with a separate degree of price rigidity. The model behavior is governed by two New Keynesian Phillips Curves. If durable goods are sufficiently long-lived we obtain an intriguing variant of the...

This paper is a contribution to the analysis of optimal monetary policy. It begins with a critical assessment of the existing literature, arguing that most work is based on implausible models of inflation-output dynamics. It then suggests that this problem may be solved with some recent...

This paper examines the optimal allocation of risk in an overlapping-generations economy It compares the allocation of risk the economy reaches naturally to the allocation that would be reached if generations behind a Rawlsian 'veil of ignorance' could share risk with one another through...

NAIRU stands for the nonaccelerating inflation rate of unemployment. It is beyond dispute that this acronym is an ugly addition to the English language. There are, however, two issues that fail to command consensus among economists, which we address in this essay. The first issue is whether the...