Insights on endogenous money and the liquidity preference theory of interest

It is argued that the debate between “structuralist” and “horizontalist” has long been obscured because of inadequate treatment, in both approaches, of the credit-money supply and of the total money supply. As a result, endogenous money models still have serious limitations today. On the one hand, the bank loan markup and the loan interest rate are exogenous in the horizontalist model, which supposes that they do not depend on the money/liquidity market conditions (as if bank loans did not compete with the existing liquidity). On the other hand, although interest rates are endogenous in the structuralist model, they result from inappropriate treatment of the loan supply and money/liquidity supply. This article aims to remove these shortcomings. It offers a theoretical framework and formal modeling where the creditworthy demand for loans determines the bank loan supply, given the central bank refinancing interest rate, while the total supply and demand for liquidity-money determines the markup and the market rate of interest in accordance with Keynes’s liquidity preference theory. In this framework, the post Keynesian theory of endogenous money and Keynes’s “verticalist” view prove to be analytically complementary.     

Money in the pure consumption loan model

The purpose of this paper is to show how modern techniques of Temporary competitive equilibrium analysis can be applied to models of the “pure consumption loan model” type. One considers Samuelson's simplest model where traders live two periods and where money is the only store of value. It is proved that a temporary equilibrium exists if price expectations are sufficiently independent of current prices. A stationary market equilibrium is shown to exist if there is a set of traders (i) whose total resources are greater when they are young than when they are old, (ii) who are indifferent between present and future consumption. It is proved that this existence theorem still holds if the economy is sufficiently “close” to an economy which has this property. A stationary market equilibrium is shown to be Pareto optimal if all traders hold positive cash balances. It may be inefficient if this condition is not satisfied, for some traders may then be willing to borrow, which they cannot do in this model.     

Economic growth,corruption and tax evasion

In this paper, we explore tax revenues in a regime of widespread corruption in a growth model. We develop a Ramsey model of economic growth with a rival but non-excludable public good which is financed by taxes which can be evaded via corrupt tax inspectors. We prove that the relationship between the tax rate and tax collection, in a dynamic framework, is not unique, but is different depending on the relevance of the “shame effect”. We show that in all three cases — “low, middle and high shame” countries, the growth rate increases as the tax rate increases up to a threshold value, after which the growth rate begins to decrease as the tax rate increases. But, for intermediate tax rates, the rate of growth for “low shame” countries is lower than that of “uniform shame” countries which is, in turn, lower than that of “high shame” countries. This happens because the growth rate is more sensitive to variations of t in an honest country rather than in a corrupt country.     

Taxation,rational expectations,and the neutrality of money

When progressive taxation of nominal income is introduced into a Barro-type monetary model with rational expectations, money may not be neutral even in the long run. In the short run, unanticipated money changes may cause output and prices to move either in the same or in opposite directions. The implications of this model are consistent with both the traditional inflation-output trade-off and the more recent phenomenon of “stagflation.”     

What to stabilize in the open economy*

We consider the question how “best” to maintain price‐level stability in an open economy, and evaluate three possible policy choices: (a) a constant money growth rate rule; (b) a fixed exchange rate; and (c) a policy of explicit commitment to a price‐level target. In each case we assume that policy is conducted by injecting reserves into or withdrawing reserves from the “banking system.” In evaluating the three regimes, we adopt the criterion that the “best” policy should leave the least scope for indeterminacy and “excessive” economic volatility. In a steady‐state equilibrium, the choice of regime is largely irrelevant; any steady‐state equilibrium under one regime can be duplicated by an appropriate choice of the “control” variable under any other regime. However, we show that the sets of equilibria under the three regimes are dramatically different. When all countries follow the policy of fixing a constant rate of money growth, there are no equilibria displaying endogenously arising volatility and there is no indeterminacy of equilibrium. Under a regime of fixed exchange rates, indeterminacies and endogenously arising fluctuations are impossible if and only if the country with the low “reserve‐to‐deposit” ratio is charged with maintaining the fixed rate. Finally, when one country targets the time path of its price level, under very weak conditions, there will be indeterminacy of equilibrium and endogenously arising volatility driven by expectations.     

Fiscal policy,welfare, and employment with perfect foresight

The long-run feasibility of expansionary fiscal policy is analyzed in a “fix price” economy under the assumption that individuals are altruistic and have rational expectations. It is found that exclusive reliance on interest bearing debt is a feasible policy only if money is an inferior good. However, feasibility is ensured if the bonds to money ratio is not higher than a certain critical level.     

International Trade and the Value of Time

I discuss a generalized Heckscher–Ohlin–Vanek (HOV) model in which consumption requires time as well as money (as in Becker's theory of the allocation of time) and the amount of work that a worker can do per unit of time—her “ability”—varies from country to country. High ability implies high income per hour, which implies a high value of time and, therefore, high consumption of the good that is more “time‐saving.” Therefore, if domestic production of this good is not commensurately high, it would have to be imported. In this way, I demonstrate that international differences in worker ability constitute an independent source of gains from trade. The model is able to explain several observed features of North–South trade that are not explained by the HOV model. The theoretical possibility of a Leontief paradox‐type trade pattern is also demonstrated.     

Mobile money,risk sharing,and educational investment: Panel evidence from rural Uganda

We examine the impact of the rapidly expanding mobile banking service “mobile money” on rural households' ability to smooth investment in schooling after a negative shock. We find that a negative shock induces a 9.3‐percentage point decrease in per school‐age child educational expenditure for households who do not use mobile money compared to an 8.3‐percentage point decrease for households that have adopted mobile money. The underlying mechanism is an increase in remittance receipt and the diversity of senders owing to the reduction in transactions cost provided by mobile money. We show that our results are robust to alternative mechanisms. We use the expansion in mobile money agent network as an exogenous variation in access to mobile money.     

Multilateral currency substitution and capital flows as sources of instability in the soe demand for money function — A case study

Using monthly data for Ireland we test the hypothesis that the combined effects of currency substitution and capital mobility renders the demand for money function subject to instability over time. The empirical evidence supports the view that both “the” expected exchange rate change, giving rise to currency substitution, and the latter as a component, along with “the” foreign interest rate, of the gross yield on foreign currency-denominated assets, giving rise to capital mobility, are important determinants of the domestic demand for money. Their inclusion as arguments yields a money demand function which is more stable than if they are (incorrectly) excluded.     

Price instability in a rational expectations model: The mexican case

The purpose of this paper was twofold: (1) to develop an open-economy-rational-expectations model to test the theoretical relationship between the price level and expectations about money and the exchange rate; and (2) based on the empirical results of the model, prescribe policy rules aimed at stabilizing inflationary expectations in Mexico. The major empirical findings were that the price formation in Mexico is positively related to both subjective money and exchange-rate expectations formed at period t. The correction path suggested by the empirical results is the implementation of an “activist” policy aimed at reducing both the ratio of real fiscal deficit and external debt to real gross domestic product from their current levels to the “ideal” levels of 1.6 and 11.3 percent of GDP, respectively.     

The tight money paradox—an alternative view

The Tight Money Paradox refers to a result obtained by Sargent and Wallace stating that a reduction in the constant rate of monetary expansion may lead to higher inflation both in the short and long runs. This result was obtained for a system which is dynamically unstable. In the present paper I show that the foregoing result can be obtained within the framework of a stable system if we redefine “tight money” to mean a reduction in the share of money financing of the budget deficit.     

Can growth-enhanced monetary policy improve welfare when people seek social status?

This paper examines the growth and welfare effects from an increase in the rate of money supply in an Ak type growth model with a relative wealth-enhanced social status motive, production externalities, and liquidity constraints. When only consumption is constrained by liquidity, fast money supply can hasten output growth unless seigniorage revenue is wasted and production externalities do not exist. We find that even though money growth normally promotes economic growth, it does not improve welfare when capital stock is over-accumulated. In general, an optimal monetary policy minimizes seigniorage. Our results also conclude that the optimal monetary policy rarely follows the Friedman rule.     

Causality between money and prices in Indonesia

The purpose of this study is to examine the relationship between money supply and prices in Indonesia, where money supply is taken to be the stock of narrow money (currency + demand deposits) and prices are proxied by the Jakarta cost of living index. The period studied is 1969–1980. Two concepts of causality namely “proper” causality in which the causal effect takes at least one quarter to manifest itself and “instantaneous” causality in which there are no lags, are employed. The hypothesis of “proper” causality is rejected by bothGranger andSims tests. However, the hypothesis that money and prices are contemporaneously correlated cannot be easily dismissed. Using the framework of [Geweke], contemporaneous causality is treated as a part of linear feedback and the lagged version of Sims test was used. We found that the hypothesis that prices cause money supply cannot be dismissed on the basis of Wald test. However, the contribution of instantaneous causality is very large to the total variance of linear feedback.     

Money,national debt,and economic growth

This paper develops a dynamic model which allows for government spending, taxation, and the endogeneity of the money supply. As an example of an application of our framework, we consider the well known stability problem of the two asset (money and physical assets) neoclassical “money-and-growth” literature. We conclude, among other things, that the usual saddle-point instability result under myopic perfect foresight with proportional savings behavior can be reversed by introducing a third asset (securities). It is further argued that this result is “robust” as it holds under various policy rules (including the traditional case of national debt growing at a constant rate).     

The engine of growth or its handmaiden?

This paper presents an analysis of time-series data for the countries in the Summers-Heston (1991) data set, in an attempt to ascertain the evidence for or against the export-led growth hypothesis. We find that standard methods of detecting export-led growth using Granger-causality tests may give misleading results if imports are not included in the system being analyzed. For this reason, our main statistical tool is the measure of conditional linear feedback developed by Geweke (1984), which allows us to examine the relationship between export growth and income growth while controlling for the growth of imports. These measures have two additional features which make them attractive for our work. First, they go beyond meredetection of evidence for export-led growth, to provide a measurement of itsstrength. Second, they enable us to determine the temporal pattern of the response of income to exports. In some cases export-led growth is a long-run phenomenon, in the sense that export promotion strategies adopted today have their strongest effect after eight to 16 years. In other cases the opposite is true; exports have their greatest influence in the short run (less than four years). We find modest support for the export-led growth hypothesis, if “support” is taken to mean a unidirectional causal ordering. Conditional on import growth, we find a causal ordering from export growth to income growth in 30 of the 126 countries analyzed; 25 have the reverse ordering. Using a weaker notion of “support”—stronger conditional feedback from exports to income than vice versa, 65 of the 126 countries support the export-led growth hypothesis, although the difference in strength is small. Finally, we find that for the “Asian Tiger” countries of the Pacific Rim, the relationship between export growth and output growth becomes clearer when conditioned on human capital and investment growth as well as import growth.     

Regional economic growth disparities: A political economy perspective

Regional differences in economic growth have been observed within many countries. Our story emphasises three region-specific factors driving growth—capital, labour and political factors. Conditional on differences in production factor (i.e., labour and capital) variations across democratic states, what role do differences in underlying “political factors” across regions play in accounting for regional growth disparities? We build a political economy model of endogenous growth where regions have the same political institutions, but experience different (and estimable) distributions over voter political biases (i.e., our “political factors”). In our model, political factors affect regional productivity as a consequence of politico-economic equilibrium. We discipline our regional growth accounting exercises by calibrating/estimating each model to American state-level economic and political-survey data. We show that the capital factor is the predominant driving force behind growth in American states. Nevertheless, regional variations in distributions of voter's political biases also account a great deal for regional growth disparities. We also evaluate how much politics would have distorted agents' welfare and regional growth, were regional economies given the opportunity to live under an efficient social planner's allocation system; and, if agents were to live under the same democratic system but where all voters have equal voting influence.     

货币流通速度的再认识--对中国1993-2003年虚拟经济与实体经济关系的分析

经济虚拟化的发展和货币需求函数的不稳定性 ,使传统货币流通速度公式的前提条件不复存在。本文根据变化发展的客观经济环境重建货币流通速度公式 ,结合货币循环流模型提出货币流通速度的“两分法” :虚拟经济和实体经济货币流通速度。在对我国 1 993— 2 0 0 3年虚拟经济与实体经济关系进行量化分析后发现 ,2 0 0 0年以来两者协调性较差 ,原因在于进出虚拟经济的资金出现大幅波动。对此本文结合我国实际 ,根据新货币流通速度公式设计了一些长短期资金流量监控指标。     

Money growth rules and price level determinacy

Do exogenous money growth rules produce price level determinacy? This is a classic topic in monetary theory. This paper contributes to this literature by examining the effect of money demand timing. The paper demonstrates how conditions for determinacy vary depending upon whether the theoretical model uses “cash-in-advance” timing or “cash-when-I'm-done” timing. This issue is addressed in an endowment economy and a standard production economy.     

经济发展、结构变化与“货币消失”——兼对“中国之谜”的再解释

2 0世纪 90年代中后期以来 ,中国的“超额”货币供给与宏观经济运行表现出了新的特点。本文试图利用发展经济学方法 ,从“货币消失”问题入手 ,对这一时期经济增长、货币供给与通货膨胀之间的关系进行解释。我们发现 ,中国经济的两部门特点导致了阻碍经济发展的“结构约束”与“需求约束”。而“中国之谜”出现的新特点 ,很大程度上正是经济运行内在机制的变化在货币方面的反映。