Research Database

This paper focuses on avoidable moral hazard and offers one explanation for limited insurance markets, for closely held firms, and for seemingly simple as opposed to contingent forms of debt. Agents have random endowments of a consumption good which are such that there are gains to trading contingent claims. But any realization of an endowment is known only by its owner unless a verification cost is borne. Contracts in such a setting are said to be consistent if agents submit to verification and honor claims in accordance with prior agreements. The Pareto optimal consistent contracts which emerge are shown to have familiar characteristics.

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An alternative solution concept is recommended for noncooperative games with multiple equilibra. Players maximize security level in a contracted game. Examples in economics are given in which this solution concept yields a unique solution: a fiat money model, the capital overaccumulation problem, and multiple rational expectations equilibria generally.

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A dynamic linear demand schedule for labor is estimated and tested. The hypothesis of rational expectations and assumptions about the orders of the Markov processes governing technology impose over-identifying restrictions on a vector autoregression for straight-time employment, overtime employment, and the real wage. The model is estimated by the full information maximum likelihood method. The model is used as a vehicle for re-examining some of the paradoxical cyclical behavior of real wages described in the famous Dunlop-Tarshis-Keynes exchange.

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In “The Inefficiency of Interest-Bearing National Debt,” (JPE, April 1979) we argued that private sector transaction costs are needed in order to explain interest on government debt. It follows that if the government’s transaction costs do not depend on its portfolio, then, barring special circumstances, an open-market purchase is deflationary and welfare improving. In this paper we show that this result can survive a potentially relevant special circumstance: reserve requirements which limit the size of insured intermediaries.

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The method proposed here includes two innovations which should improve the accuracy of econometric forecasting. First, it replaces the subjective, judgmental adjustments commonly used with a more formal, objective econometric procedure. Second, it includes a methodology for testing the usefulness of subperiod data which forecasters often inspect when choosing intercept adjustments. A sample application to the MIT-Penn-SSRC Model demonstrates that the procedure is both feasible and potentially helpful in the context of a large macroeconometric model.

In this paper, we examine various exchange rate regimes, paying particular attention to what difference the monetary-fiscal policy choices of governments make. The exchange rate may be market-determined or fixed, and if fixed, either cooperatively or by one government alone. Further, capital controls may or may not apply. Our most important result, quite general, we believe, is that absent capital controls the equilibrium exchange rate of the floating rate regime is indeterminate. It makes no sense to advocate floating rates and unfettered international borrowing and lending.

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Although many studies have investigated the relationship between market structure and the prices of bank services, most have been concerned with metropolitan areas. These studies generally have used bank balance sheet and income statement ratios as bank conduct proxies. Moreover, prior studies have approximated local banking markets with county or SMSA boundaries.

This study develops a methodology for delineating the geographic boundaries of local banking markets through the use of secondary economic and demographic data. This methodology is utilized to delineate rural banking markets in the states of Iowa, Minnesota, and Wisconsin. The relationship between those markets and rural bank conduct is investigated. Conduct is measured with explicit price and nonprice information generated by telephone survey.

The market determination methodology is based on the assumption that people will bank where they live, work, or obtain goods and services. Using a classification system which categorizes communities according to variety and amount of retail business transactions, a gradient concept is developed which initially approximates market boundaries according to local minima in the gradient.

This procedure, which determines where residents are likely to shop, is supplemented with commuting data based on minor civil divisions to determine where residents work. The resulting “areas of convenience” designate the locale where local customers will ordinarily select banking services.

The natural banking markets determined for the entire state of Minnesota are compared with banking markets approximated by county or SMSA boundaries. The counties or SMSAs are allowed to underestimate or overestimate the natural market by as much as 30 percent of total deposits before being classified as unacceptable approximators. According to these criteria, 61 percent of the counties and SMSAs are found to be unacceptable approximators. When the criteria are tightened to permit only 10 percent underestimation or overestimation, 79 percent of the counties and SMSAs are rated unacceptable. This implies that researchers and policy makers should be cautious about approximating local banking markets with political boundaries. Additional methods for testing the procedure and making it operational are suggested.

The methodology is used to delineate local banking markets in Iowa, Minnesota, and Wisconsin. Twenty-five rural markets are randomly selected from each state. A total of 333 banks from these markets forms the basis for the structure-conduct analysis. These banks are surveyed by telephone to determine explicit price and nonprice information.

Three estimation models (linear, hyperbolic, and cubic) are developed to analyze the relationship between rural bank market structure and the survey variables. The basic linear model generally provides the best fit.

Increases in concentration are significantly associated with increases in the rates rural banks charge on each type of loan included in the study. Moreover, increases in market share are significantly associated with increases in nonprice effort. Consequently, policy makers are confronted with selecting between: (1) higher prices and increased provision of ancillary banking services, or (2) lower prices and less service.

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As the CD market has become an important source of bank funds, it has also become an important market for policymakers to understand. But so far model builders have not recognized the significance of assuming that new and old CDs are perfect substitutes. Therefore, they have misused the assumption, discarded relevant data, and ignored evidence inconsistent with perfect substitution. This study shows that models of the CD market should not treat new and old issues as perfect substitutes and that they should not drop observations when market rates are above the Regulation Q ceiling.

This paper puts forward a method of policy simulation with an existing macroeconometric model under the maintained assumption that individuals form their expectations rationally. This new simulation technique grows out of Lucas’ criticism that standard econometric policy evaluation permits policy rules to change but doesn’t allow expectations mechanisms to respond as economic theory predicts they will. The technique is applied to versions of the St. Louis Federal Reserve model and the Federal Reserve-MIT-Penn (FMP) model to simulate the effects of different constant money growth policies. The results of these simulations indicate that the problem identified by Lucas may be of great quantitative importance in the econometric analysis of policy alternatives.

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This paper argues that versions of Samuelson/Cass-Yaari overlapping-generations consumption-loans models ought to be taken seriously as models of fiat money. The case is made by summarizing and interpreting what these models have to say about fiat money and by arguing that these properties are robust in the sense that they can be expected to hold in any model of fiat money.

Two of the properties establish the connection between, on the one hand, the existence of equilibria of which value is attached to a fixed stock of fiat money and, on the other hand, the optimality of such equilibria and the nonoptimality of nonfiat-money equilibria. Other properties describe aspects of the tenuousness of monetary equilibria in such models: The nonuniqueness of such equilibria in the sense that there always exists a nonfiat-money equilibrium and the dependence of the existence of the monetary equilibrium on the physical characteristics of other potential assets and on other institutional features like the tax-transfer scheme in effect. Rather than being defects of these models, it is argued that this tenuousness is helpful in interpreting various monetary systems and, in any case, is unavoidable; it will turn up in any good model of fiat money. Still other properties summarize what these models imply about the connection—or, better, lack of such—between fiat money and private borrowing and lending (financial intermediation) and what they imply about country-specific monies.

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The formation and maintenance of the institutions of money and a futures market are analyzed in an overlapping generations model with a first period. With money and a futures market the economy converges to the allocation where costly transactions are foregone and marginal products and marginal utilities equated. However, neither institution may be formed, or money may be formed without a futures market. Moreover, stochastic output technologies raise the possibility of persistent recession and depression and of valuable government insurance of the futures market.

The analyses of fiscal and monetary policies that the Congressional Budget Office (CBO) provides Congress tend to be biased, encouraging the use of activist stabilization policies. The CBO’s virtual neglect of economic uncertainties and its emphasis on very short time horizons make active policies appear much more attractive than its own model implies. Moreover, the CBO’s adoption of the macroeconometric approach fundamentally biases its analyses. Macroeconometric models do not remain invariant to changes in policy rules and are mute on the implications of alternative policies for efficiency and income distribution. The rational expectations equilibrium approach overcomes these difficulties and implies that less activist and less inflationary policies are desirable.

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This paper presents a simple coherent general equilibrium example in which optimal provision of a public good implies counter-cyclical government expenditure.

This paper presents a welfare analysis of monetary policy rules that differ as regards the extent to which monetary policy accommodates an exogenous, stochastic deficit. Examples show that a nonaccommodating rule, one involving a higher ratio of bonds to currency the higher the deficit, is not necessarily better than rules that accommodate: either a rule involving a constant ratio of bonds to currency or one involving a lower ratio of bonds to currency the higher the deficit. Moreover, the nonaccommodating rule can imply more variation in the price level than the accommodating rules.

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This study attempts to determine whether entry regulation is more restrictive in unit or branch banking states.

A model is developed in which entry, defined as the formation of a new bank or branch, is explained as being a response to the general economic climate plus regulation. Using time series data and dating the onset of effective entry regulation with the passage of the banking Act of 1935, it is ascertained that effective entry regulation has caused the aggregate rate of entry into commercial banking to fall by about sixty percent. This analysis included adjustments for changes in economic conditions. The effect of entry regulation, however, has not been uniform. Entry rates in unit banking states is estimated to be seventy percent lower than it would have been in the absence of regulation, while limited branching and statewide branching states have experienced fifty and forty percent declines, respectively.

This analysis suggests that entry in unit banking states has been more restricted than in branch banking states. Two reasons are cited that may account for this differential impact of regulation. First, regulators may tend to be more pessimistic than potential entrants regarding the profitability of a new banking office. This pessimism may not have a significant effect upon entry when other factors indicate a high probability of success, but may be important in marginal cases. Thus, because branch banking states tend to be more prevalent in the west, and because this has been the area of greatest economic growth in the past forty years, the pessimism of regulators would tend to be less apparent in branch banking areas. Second, regulators apparently prefer to issue charters for new branches rather than for new banks because they have more information on which to base their decisions. In addition, if the market demand is misjudged, a branch bank has retained earnings and other branches from which to carry short-term losses.

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Portfolio autarky obtains when residents of every country are prohibited from owning real assets located in other countries. Such a regime and a laissez-faire regime, both characterized by free trade in goods, are studied in a model whose resource and technology assumptions are those of the standard two-country, two- (nonreproducible) factor, two- (nonstorable) good model. But to ensure a market for assets (land), the model is peopled by overlapping generations; each two-period lived individual supplies one unit of labor only in the first period of his life. Unique equilibria are described and shown to exist, and, in terms of a “growth model” version of the Pareto criterion, laissez-faire is shown to be optimal and portfolio autarky to be nonoptimal.

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This study attempts to determine whether entry regulation is more restrictive in unit or branch banking states.

A model is developed in which entry, defined as the formation of a new bank or branch, is explained as being a response to the general economic climate plus regulation. Using time series data and dating the onset of effective entry regulation with the passage of the banking Act of 1935, it is ascertained that effective entry regulation has caused the aggregate rate of entry into commercial banking to fall by about sixty percent. This analysis included adjustments for changes in economic conditions. The effect of entry regulation, however, has not been uniform. Entry rates in unit banking states is estimated to be seventy percent lower than it would have been in the absence of regulation, while limited branching and statewide branching states have experienced fifty and forty percent declines, respectively.

This analysis suggests that entry in unit banking states has been more restricted than in branch banking states. Two reasons are cited that may account for this differential impact of regulation. First, regulators may tend to be more pessimistic than potential entrants regarding the profitability of a new banking office. This pessimism may not have a significant effect upon entry when other factors indicate a high probability of success, but may be important in marginal cases. Thus, because branch banking states tend to be more prevalent in the west, and because this has been the area of greatest economic growth in the past forty years, the pessimism of regulators would tend to be less apparent in branch banking areas. Second, regulators apparently prefer to issue charters for new branches rather than for new banks because they have more information on which to base their decisions. In addition, if the market demand is misjudged, a branch bank has retained earnings and other branches from which to carry short-term losses.

No abstract available.

In "Liquidity Preference as Behavior Towards Risk," Tobin suggests that risk aversion and expected utility maximization can provide a rigorous foundation for an equilibrium demand for money. In Tobin's model, money plays a risk reducing role in individual portfolios. This note considers whether a general equilibrium stochastic model can produce equilibrium yield distributions that allow money to play that role if money does not appear directly as an argument in the utility or production functions of the economy. The model examined, a stochastic production variant of Samuelson's model of overlapping generations, cannot produce such yield distributions.

In "Open Market Operations in a Model of Regulated, Insured Intermediaries" [JPE, February 1980] we show that once-for-all open market purchases need not be inflationary. Here we show this result can carry over to various stationary accommodation rules given stochastic deficits. In particular, the inflationary and deflationary effects of stochastic deficits are not offset by, nor welfare improved by, a monetary policy that leans toward monetarism. Moreover, a constant money growth rule is not in the class of stationary policies given the kind of stochastic deficit we analyze, which by itself is a serious indictment of the monetarist proposal.

A statistical definition of the natural unemployment rate hypothesis is advanced and tested. A particular illustrative structural macroeconomic model satisfying the definition is set forth and estimated. The model has "classical" policy implications, implying a number of neutrality propositions asserting the invariance of the conditional means of real variables with respect to the feedback rule for the money supply. The aim is to test how emphatically the data reject a model incorporating rather severe "classical" hypotheses.

This paper describes methods for conveniently formulating and estimating dynamic linear econometric models under the hypothesis of rational expectations. An econometrically convenient formula for the cross-equation rational expectations restrictions is derived. Models of error terms and the role of the concept of Granger causality in formulating rational expectations models are both discussed. Tests of hypothesis of strict econometric exogeneity along the lines of Sim’s are compared with a test that is related to Wu’s.