Search theory and applied economic research

In the summer of 2002, the Swiss National Bank (SNB) hosted the “SNB-Fed Cleveland Workshop on Monetary Economics”. Recent years have seen the development of the search-theoretic approach to monetary theory. It has established itself as an important strand of monetary theory in a very short space of time, although it has yet to exert a significant influence on the empirical models that are typically used for monetary policy analysis. This is why the conference organisers, David Altig (Federal Reserve Bank of Cleveland), Aleksander Berentsen (University of Basel) and Thomas Jordan (SNB) decided that the event should focus on linking search theory with applied economic research. This summary article first briefly examines the objectives and challenges of search theory before discussing briefly the conference papers.Search Theory; Monetary Policy; Applied Economic Research

Monetary Policy in a Channel System

Channel systems for conducting monetary policy are becoming increasingly popular. Despite their popularity, the consequences of implementing policy with a channel system are not well understood. We develop a general equilibrium framework of a channel system and investigate the optimal policy. A novel aspect of the channel system is that a central bank can "tighten" or "loosen" its policy without changing its target rate by increasing the interest-rate spread symmetrically around the target rate. This questions the characterization of optimal policy through interest-rate rules, as done in a large body of the literature on the optimal design of interest-rate rules.monetary policy, interest rates, search

Outside versus Inside Bonds: A Modigliani-Miller Type Result for Liquidity Constrained Economies

When agents are liquidity constrained, two options exist — sell assets or borrow. We compare the allocations arising in two economies: in one, agents can sell government (outside) bonds and in the other they can borrow by issuing (inside) bonds. All transactions are voluntary, implying no taxation or forced redemption of private debt. We show that any allocation in the economy with inside bonds can be replicated in the economy with outside bonds but that the converse is not true. However, the optimal policy in each economy makes the allocations equivalent.liquidity, financial markets, monetary policy, search

Monetary policy in a channel system

Channel systems for conducting monetary policy are becoming increasingly popular. Despite its popularity, the consequences of implementing policy with a channel system are not well understood. The authors develop a general equilibrium framework of a channel system and study the optimal policy. A novel aspect of the channel system is that a central bank can "tighten" or "loosen" its policy without changing its policy rate. This policy instrument has so far been overlooked by a large body of the literature on the optimal design of interest-rate rules.Monetary policy

Optimal Stabilization Policy with Flexible Prices

We construct a dynamic stochastic general equilibrium model to study optimal monetary stabilization policy. Prices are fully flexible and money is essential for trade. Our main result is that if the central bank pursues a long-run price path, thereby controlling inflation expectations, it can improve welfare by stabilizing short-run aggregate shocks. The optimal policy involves smoothing nominal interest rates which effectively smooths consumption across states. Failure to follow a long-run price path makes any stabilization attempt ineffective.

Optimal stabilization policy with endogenous firm entry

Monetary policy has significant but overlooked effects on entry and exit of firms. We study optimal monetary stabilization policy in a DSGE model with microfounded money demand and endogenous firm entry. Due to a congestion externality affecting firm entry, the optimal policy deviates from the Friedman rule in all states even though all prices are fully flexible. In contrast to previous Ramsey model with flexible price, our calibration exercises suggest that the model can generate a high volatility of the nominal interest rate which is a direct consequence of policy actions to control entry.Monetary policy ; Econometric models

Outside versus inside bonds: a Modigliani-Miller type result for liquidity constrained economies

When agents are liquidity constrained, two options exist - sell assets or borrow. We compare the allocations arising in two economies: in one, agents can sell government bonds (outside bonds) and in the other they can borrow (issue inside bonds). All transactions are voluntary, implying no taxation or forced redemption of private debt. We show that any allocation in the economy with inside bonds can be replicated in the economy with outside bonds but that the converse is not true. However, the optimal policy in each economy makes the allocations equivalent.Financial markets ; Bond market ; Liquidity (Economics)

Money, Credit and Banking

In monetary models in which agents are subject to trading shocks there is typically an ex-post inefficiency in that some agents are holding idle balances while others are cash constrained. This inefficiency creates a role for financial intermediaries, such as banks, who accept nominal deposits and make nominal loans. We show that in general financial intermediation improves the allocation and that the gains in welfare arise from paying interest on deposits and not from relaxing borrowers’ liquidity constraints. We also demonstrate that increasing the rate of inflation can be welfare improving when credit rationing occurs.money, credit, rationing, banking

On Cheating and Whistle-Blowing

We study the role of whistle-blowing in the following inspection game. Two agents who compete for a valuable prize can either behave legally or illegally. After the competition, a controller investigates the agents' behavior. This control game has a unique equilibrium in mixed strategies. We then add a whistle-blowing stage, where the controller asks the loser to blow the whistle. This extended game has a unique perfect Bayesian equilibrium in which only a cheating loser accuses the winner of cheating and the controller tests the winner if and only if the winner is accused of cheating. Whistle-blowing reduces the frequencies of cheating, is less costly in terms of test frequencies, and leads to a strict Pareto-improvement if punishments for cheating are sufficiently large.Principal-two-Agents; Inspection Games; Asymmetric Information; Signalling

Inflation and Unemployment in the Long Run

We study the long-run relation between money, measured by inflation or interest rates, and unemployment. We first discuss data, documenting a strong positive relation between the variables at low frequencies. We then develop a framework where both money and unemployment are modeled using explicit micro-foundations, integrating and extending recent work in macro and monetary economics, and providing a unified theory to analyze labor and goods markets. We calibrate the model, to ask how monetary factors account quantitatively for low-frequency labor market behavior. The answer depends on two key parameters: the elasticity of money demand, which translates monetary policy to real balances and profits; and the value of leisure, which affects the transmission from profits to entry and employment. For conservative parameterizations, money accounts for some but not that much of trend unemployment — by one measure, about 1/5 of the increase during the stagflation episode of the 70s can be explained by monetary policy alone. For less conservative but still reasonable parameters, money accounts for almost all low-frequency movement in unemployment over the last half century.inflation, unemployment, search