All central banks manage the supply of money and credit in their countries, increasing and decreasing them as needed to provide what economies need to keep growing. The way central banks typically handle that job involves short-term interest rates. But when inflation is low, central banks can't use their usual methods to get money and credit into an economy that needs it. Several essays in this volume describe the work of economists who have investigated problems that central banks might have when inflation gets low. Other essays investigate related questions such as whether an economy suffers when it moves from high inflation to low inflation, what the costs of inflation are to economic welfare, and whether a little bit of inflation can actually be good for economic growth.

All central banks manage the supply of money and credit in their countries, increasing and decreasing them as needed to provide what economies need to keep growing. The way central banks typically handle that job involves short-term interest rates. But when inflation is low, central banks can t use their usual methods to get money and credit into an economy that needs it. Several essays in this volume describe the work of economists who have investigated problems that central banks might have when inflation gets low. Other essays investigate related questions such as whether an economy suffers when it moves from high inflation to low inflation, what the costs of inflation are to economic welfare, and whether a little bit of inflation can actually be good for economic growth.

A new edition of a book presenting a unified framework for studying the role of money and liquid assets in the economy, revised and updated. In Money, Payments, and Liquidity, Guillaume Rocheteau and Ed Nosal provide a comprehensive investigation into the economics of money, liquidity, and payments by explicitly modeling the mechanics of trade and its various frictions (including search, private information, and limited commitment). Adopting the last generation of the New Monetarist framework developed by Ricardo Lagos and Randall Wright, among others, Nosal and Rocheteau provide a dynamic general equilibrium framework to examine the frictions in the economy that make money and liquid assets play a useful role in trade. They discuss such topics as cashless economies; the properties of an asset that make it suitable to be used as a medium of exchange; the optimal monetary policy and the cost of inflation; the coexistence of money and credit; and the relationships among liquidity, asset prices, monetary policy; and the different measures of liquidity in over-the-counter markets. The second edition has been revised to reflect recent progress in the New Monetarist approach to payments and liquidity. Rocheteau and Nosal have added three new chapters: on unemployment and payments, on asset price dynamics and bubbles, and on crashes and recoveries in over-the-counter markets. The chapter on the role of money has been entirely rewritten, adopting a mechanism design approach. Other chapters have been revised and updated, with new material on credit economies under limited commitment, open-market operations and liquidity traps, and the limited pledgeability of assets under informational frictions.