Lucy Qian Liu

On the 'Hot Potato Effect' of Inflation: Intensive Versus Extensive Margins

Conventional wisdom is that inflation makes people spend money faster, trying to get rid of it like a “hot potato,” and this is a channel through which inflation affects velocity and welfare. Monetary theory with endogenous search intensity seems ideal for studying this. However, in standard models, inflation is a tax that lowers the surplus from monetary exchange and hence reduces search effort. We replace search intensity with a free entry (participation) decision for buyers—i.e., we focus on the extensive rather than intensive margin—and prove buyers always spend their money faster when inflation increases. We also discuss welfare.

Equilibrium Price Dispersion and Rigidity: A New Monetarist Approach

Why do some sellers set prices in nominal terms that do not respond to changes in the aggregate price level? In many models, prices are sticky by assumption. Here it is a result. We use search theory, with two consequences: prices are set in dollars since money is the medium of exchange; and equilibrium implies a nondegenerate price distribution. When money increases, some sellers keep prices constant, earning less per unit but making it up on volume, so profit is unaffected. The model is consistent with the micro data. But, in contrast with other sticky-price models, money is neutral.

Risk Taking and Interest Rates : Evidence from Decades in the Global Syndicated Loan Market

We study how low interest rates in the United States affect risk taking in the market for cross-border corporate loans. Because banks tend to originate these loans with intent to sell to nonbank investors, we examine risk taking by the broad financial system. To the extent that actions of the Federal Reserve affect U.S. interest rates, our analysis provides evidence of cross-border spillover effects of U.S. monetary policy and highlights the global lending and risk-taking channels. We find that movements in the U.S. interest rates have an important effect on ex-ante credit risk of cross-border corporate loans, though the channels are different in the pre- and post-crisis periods. Before the crisis, banks made ex-ante riskier loans to non-U.S. borrowers in response to a decline in U.S. short-term interest rates, and, after it, banks and nonbanks originated such loans in response to a decline in U.S. longer- term interest rates. Economic uncertainty, risk appetite, and the U.S. dollar exchange rate appear to play a limited role in explaining ex-ante credit risk. Our results highlight the potential policy challenges faced by central banks in affecting credit risk cycles in their own jurisdictions.

Money and Credit; Theory and Applications

We develop a theory of money and credit as competing payment instruments, then put it to work in applications. Buyers can use cash or credit, with the former (latter) subject to the inflation tax (transaction costs). Frictions that make the choice of payment method interesting also imply equilibrium price dispersion. We deliver closed-form solutions for money demand. We then show the model can simultaneously account for the price-change facts, cash-credit shares in micro payment data, and money-interest correlations in macro data. We analyze the effects of inflation on welfare, price dispersion and markups. We also describe nonstationary equilibria as self-fulfilling prophecies, which is standard, except here it entails dynamics in the price distribution.