Trade uncertainty and the two-step procedure: The choice of numeraire and exact indexation

Summary In a small open economy it is optimal to first maximize national income and second choose the best consumption point.The same two-step procedure under (quantitative) uncertainty is suboptimal if one of the goods is used as numéraire. Optimality is restored however, if nominal prices are deflated by the exact price index. Hence there is equivalence between the appropriate two-step procedure and the introduction of a stock market under uncertainty (Diamond 1967) under ideal circumstances.I would like to thank, without implicating, Peter van Bergeijk, Steven Brakman, Willem Buiter, Richard Gigengack, Jean-Marie, Viaene, Casper de Vries and an anonymous referee for useful comments and Angelique van Haasteren and Martijn Herrmann for graphical assistance.     

Trade uncertainty and specialization. Social versus private planning

Summary A small trading economy which produces and trades an arbitrary, but finite, number of goods and faces given terms of trade in combination with an uncertain volume of trade is studied. An exogenous probability of trade disruption forces both public and private decision-makers to specialize to a lesser extent in accordance with their comparative advantage. A unique optimal point of production exists for each probability of trade disruption. A private competitive economy will not produce at this point: it produces too much of the good with a comparative advantage.Notation C ² class of twice continuously differentiable functions - C _i consumption of goodi - f free-trade utility function - g autarky utility function - p international relative price of goody - p _d domestic relative price of goody - Q solution set of - U utility function - U marginal utility of goodi - U _x marginal utilities of lastn goods - x goodx - x ^* autarky production of goodx - x free-trade production of goodx - x _pr private production of goodx - x ₀ optimal production of goodx - x _m maximal production of goodx - y goody - Y income function - private economy equilibrium function - difference function - production possibility function - _x derivative of - probability that free trade occurs - indirect utility function - solution function to optimality problem - c consumption vector - p relative price vector - x goods vector - t transpose - R ₊ ⁿ n-dimensional positive orthant This article communicates the opinion of the author. The views expressed herein are not necessarily shared by his employer.Comments by Willem Buiter, Casper de Vries and participants at the Buiter Workshop Series at the University of Groningen (May 1989) were very useful.     

Mandatory Pensions and Personal Savings in The Netherlands*

The Netherlands has a relatively generous social security system and a wide coverage of individuals by private (occupational) pension schemes. Total household savings are rather high and fairly stable, although the amount of contractual savings apears to be going up at the expense of non-contractual (free) savings. Using an approach originally pioneered by Feldstein (1974) we employ microdata to investigate the displacement effect of security and pension wealth on free household savings. It turns out that the data available are too noisy to make precise statements about the displacement effects. Our results do suggest, however, that a one-for-one displacement of free savings by social security is consistent with the data. For pensions such a complete offset is less likely. This suggests that increase of coverage by private pensions is an effective way of raising savings.     

Tax Level and Tax Internalization Effects on Union Wage Bargaining

High taxes and generous social benefits are often blamed for causing unemployment. The conventional view is that if taxes on labour are (too) high, jobs will be lost and that generous social benefits will exert an upward pressure on unions' wage claims. In the case where unions co-ordinate their wage bargaining strategy, this need not be the case. A simple model is used to illustrate the effects of the tax rate level and tax internalization on unions' wage bargaining strategy. A high marginal tax rate along with endogeneity of the average tax rate shifts the union's trade-off between wages and employment in favour of the latter. These shifts may have contributed to the success of the so-called polder model or tulip model of the Netherlands.     

Public pensions and political decision-making

Summary A simple decision-making model regarding the financing method and benefit level of a public old age pension is developed. In line with existing literature, the decision-making process is supposed to be in the form of direct democracy, initially, In order to apply the model to a situation of a representative democracy, to wit the Netherlands, five social groups are considered which may be assumed to influence the decisions taken by the government organization. The empirical results show unanimous support for the PAYG system actually chosen at the start of the pension scheme in 1956. The results are highly suggestive, furthermore, as regards the fact that the financing method of the pension scheme has recently become a parliamentary issue. If one endorses the view that long-term considerations should be given a more preeminent place in this context, which would demand a change of the decision-making structure in favour of the young, then the political support for such a change would seem to be present at the moment.The research reported in this paper is part of the project Economic Policy and Conflicts of Interests of the University of Amsterdam (PEPCI paper 85.03). Helpful comments by Professor P. Hennipman and by participants in the workshop on The Origin and Future of Social Security Schemes at the Wissenschaftszentrum Berlin, December 13–14, 1984, in particular by Professor Charles Blankart, are gratefully acknowledged.     

Rational spirits and the post Keynesian macrotheory of microeconomics

Summary The argument that post Keynesian theory rejects rationality and maximization as a basis of agent behaviour and is thus non-rational and lacking micro-foundations is contrasted by reference to Keynes' use of his early work on probability in the General Theory. Instead of presuming rational choice over perfectly known events, post Keynesian theory builds on Keynes' explanation of agents' rational beliefs in uncertain propositions about their knowledge of the world. These rational spirits lead to the recognition of the macro constraints to individual action or a macrofoundations of microeconomics linked to the role of money and to the role of liquidity preference as both a measure of rational belief and a determinant of money prices which equate the rates of return on all existing and newly produced goods. In this equilibrium prices will generally diverge from costs of production, in contrast to perfect competition but in concordance with the post Keynesian microeconomic theories of mark-up pricing.Comments by L. Hoogduin are gratefully acknowledged. He is relieved from any responsibility for my impressionistic presentation of Keynes' views on probability.     

Economic theories of leisure: Some comments and suggestions

Summary Most economic theories of leisure are concerned with valuations of leisure time related to income as an opportunity cost. After a critical discussion of these theories, leisure time as a constraint is introduced in the theory of consumer behaviour by (1) distinguishing between pleasant and unpleasant consumer activities, (2) discussing the effects on individual's welfare of changes, in the duration of both types of activities and (3) developing time-saving concepts. A theoretical framework for consumer choices under time and/or income constraints leads to suggestions for the lines along which leisure research should be developed as a basis for welfare policy in the widest sense.My thanks are due to Professors P. Hennipman, L. H. Klaassen, A. Pais and Mr. D. B. Needham for the valuable suggestions they made during the preparation of this article. Several parts of it will be presented in a more detailed form in a thesis on the subject.     

Financial instability and the real economy

Summary The paper deals with three different areas of the financial sphere: national moneys, exchange rates and financial claims, markets and institutions. For each of them, it tries to identify the main forms of instability which may occur, their causes and consequences for the real economy. Depending on the area concerned, the forms of instability include inflation, fluctuations and misalignments in interest rates, exchange rates and asset prices and finally solvency and liquidity crises of institutions. It is concluded that, over the last fifteen years, significant progress has been made in the policy framework to counteract instabilities in the national and monetary spheres. The conclusion is more mixed with regard to the structure of financial markets.[/p]We are grateful to Julian Alworth, Svein Andresen, Gavin Bingham, Joe Bisignano, Michael Hutchison and Paul van den Bergh for useful comments.     

The effect of increased labor force participation of married women on the distribution of family income in the Netherlands

Summary In this article we analyse the income equalizing effect of wives' income on the combined income of husband and wife in The Netherlands. We will use the Theil coefficient as a measure of inequality. After some preliminary remarks have been made and relevant data have been presented, the Theil coefficient is decomposed into a number of components. Whereas theory concludes that the effect of wives' income on the distribution of family income should be less equalizing after about 1970, it appears that this does not hold true for the whole period under investigation.The research was carried out in the framework of the project entitled Problems relating to the distribution of social security. The author wishes to thank Professor A. Kapteyn and two anonymous referees for their helpful comments on an earlier draft of this paper.     

Interpretation of error covariances with nonrandom data: An empirical illustration of returns to college education

Conclusion This paper reviews two models of selectivity and gives an interpretation of the covariance terms that are particular to self-selectivity models. While the second model examined in this paper has been discussed elsewhere, the estimates presented for the first model have not been discussed in previous papers. More importantly though, the paper proposes an hypothesis about the expected relationship between error covariances. According to this hypothesis, if all individuals who are faced with the choice between two regimes (1 and 2) choose the regime which yields a maximum value, then the expected relationship between covariances is ₁ < ₂ . If all individuals choose that regime which yields a minimum value, then the expected relationship between covariances is ₁ > ₂ . This relationship holds for a very general class of selectivity models, so long as individuals are choosing between regimes by comparing the expected value (to them) of each regime.This paper was written while I was working under the professional development program at CNA.     

Smoke of leets

Summary This is a review of some of Mrs. Joan Robinson's ideas, and the author's conclusion is that these ideas do not contribute to the present state of economic theory. Her view on international trade is lopsided, her criticism of traditional capital theory goes too far, her refutation of income distribution theory is mainly unfounded. Basically, Mrs. Robinson rejects the notion of relative scarcity of capital; the author believes that this is a useful notion in economics. Moreover, her recent work shows a strong anti-empiricist tendency. If Mrs. Robinson's negative train of thought were to be applied to all concepts of macro-economic theory (total labour force, real national income etc.) these concepts would vanish in thin air. The whole of macro-economics might go up in smoke.     

De Theorie van de Inkomensverdeling en het welzijn van de huisvrouw

Summary The author presents some comments on the discussion between Mrs. Bruyn-Hundt and Prof. Tinbergen inDe Economist, 1973, nr. 6. In analysing the welfare of housewives, the nature of the family and of the raising of children, which is one of the ultimate aimes of human life, should be taken into account. Before deciding if, and to what extent, the unpaid services of housewives and other members of the family should be included in the national income, a production boundary within households should be defined. It is doubtful whether the inclusion of unpaid domestic services in the definition of national income is very useful for purposes of economic analysis.     

Wages and Teachers’ Hours of Work

This paper seeks to estimate the effect of teachers net marginal wages on their working hours, on the basis of a survey of Dutch teachers. The resulting uncompensated wage elasticity is significantly positive and has an average value of 0.2 for males and 0.4 for females. However, a general wage increase is a rather costly solution to teacher shortages. Alternatively, working full-time can be made attractive for part-time teachers by providing a premium for full-time teachers. This kind of premium provides part-time teachers with a stronger incentive to work full-time, as the negative income effect does not occur. Simulation results show that such a premium produces an effect that is almost seven times as large as a general wage increase.     

Engeland en de Europese Technische Samenwerking

Summary This article attempts to evaluate the possible British contribution to research and development in an enlarged European Economic Community, and formulates the conditions for progress of the British economy when joining the Common Market.In the past the stop-go policy of the consecutive British governments created an atmosphere not conducive to economic growth. In the sixties the so called brain drain and the capital export were extensive. Annual gross investment in relation to gross national product was about 5% lower than in the Common Market countries, and pure capital productivity - represented by the ICOR and corrected for the contribution of labour - was unsatisfactory when measured according to EEC standards. These circumstances led to a considerable underinvestment in the United Kingdom (the author's very crude estimate regarding the period 1958–1968 reaches the figure of about £ 11.300 million), a process that probably will go on in the seventies, as the British income policy meets with huge difficulties. Without skilful and efficient use of the more than sufficiently available British research and development resources -so that the capital productivity can be raised - and without a drastic increase of the investment-income ratio as well as an adequate income policy, the success of the British entry into the Common Market will remain doubtful. Otherwise the export of valuable production factors will continue and unemployment will keep on increasing, so that even participation in the scheduled economic and monetary union by 1978 will be questionable. Even if the above mentioned conditions are fulfilled, considerable capital import may still be necessary to modernise capital stock in Britain, especially in the field of infrastructure, factory building and housing.     

Cash Management, Payment Patterns and the Demand for Money

We analyse cash management and payments behaviour using 1990–1994 panel data for Dutch households. The results largely confirm the transactions demand for money theory, including an income elasticity of substantially less than one, and they are consistent with the hypothesis of technology resulting in households' economizing on currency balances. The results indicate up to 40 per cent lower transactions balances in the future, which is affirmed by direct questioning on future expectations. The effect on total money outstanding is considerably lower, due to significant amounts of missing money in hoards, which are insensitive to new developments in the payments system.     

Productivity, innovation and ICT in Old and New Europe

This paper investigates the productivity performance of CEE countries vis-à-vis the EU-15 during the 1990s to detect sources of convergence between the two regions. The paper shows that changes in labour intensity have been an important source of productivity convergence during the 1990s, and are likely to remain so in the near future. It is also found that despite lower income levels, ICT capital in the CEE-10 has contributed as much to labour productivity growth as in the EU-15. Industry analysis shows that manufacturing industries that have invested heavily in ICT have been key to the restructuring process. As such ICT may therefore have been an important source of growth but probably temporary source of convergence. In the longer run the impact of ICT on growth will have to come primarily from its productive use in services. The paper therefore includes a New Economy Indicator that reflects the existence of conducive environment for continued ICT investment and diffusion. It shows that further reforms are much needed for CEE countries to enter a second convergence phase in the coming decades.This paper is written as part of a project on Information & Communication Technologies as Drivers of Economic Development in Post-Communist Countries sponsored by USAid (Grant No. 220/001.6). The industry data for the EU-15 (section 4) are updated estimates derived from a study sponsored by DG Enterprise of the European Union (OMahony and van Ark 2003). We are grateful to Robert Inklaar and Edwin Stuivenwold for statistical assistance, and to various commentators on this paper at seminars and workshops. We benefited in particular from comments by Bart Los and Marcel Timmer. The authors are solely responsible for the results presented and any remaining omissions.     

Game equilibrium modelling

Summary Non-cooperative game theory has in recent years become one of the main tools in the social sciences and economics. It deals with decision problems of more than one (rational) player. The actions of those players result in outcomes that are the best that may have happened to a player, given the actions of the other players. This is precisely the content of the 'Nash equilibrium' concept. It would be nice when each game had a unique Nash equilibrium. Unfortunately, both non-existence and multiple equilibria occur. An important role in game theory is played by the information available to the players. Among the economic applications are: the Theory of Industrial Organisation, Bargaining and the Economic Theory of Information.Comments by Eric van Damme and Casper de Vries on an earlier draft of this paper have greatly improved the presentation. I have benefited from the comments of the editor and an anonymous referee ofDe Economist. For all omissions, all possible errors and the revealed views in this paper, I alone am responsible.     

Utility and economics

Summary Although utility has been the central concept in economics, economists have paid relatively little attention to its measurement. Generally, utility is measured indirectly via the revealed preference approach. We discuss problems with this approach and next introduce alternative direct measurement methods. The direct measurement methods are seen to spawn a so-called theory of preference formation, which explains differences in utility functions of different individuals. The similarities of this theory with related theories in sociology and psychology, and various sorts of empirical evidence, are reviewed. The paper concludes with a discussion of the implications of these findings for economic theories.This is a slightly adapted version of my inaugural address at Tilburg University. I thank Tom Wansbeek for his helpful comments.     

The effects of external trade,foreign resources,and domestic Policies on Domestic Savings in some developing Countries: a regression analysis

Summary This paper examines the impacts of some external and domestic factors on two measures of domestic savings (DS) in a sample of developing countries over the period 1980-82. No strong statistical evidence is found to support the hypothesis that external resources (i.e., official aid and borrowed capital) inhibit DS by substituting for them. On the other hand, favorable trade conditions (as represented by the rate of growth of the external terms of trade) are consistently found to be positively and significantly correlated with DS. These results are suggested to support the old slogan trade not aid, if it is interpreted to mean that aid should not be considered as an alternative to profitable trade opportunities.     

Differentiation of Skills, Firms’ Recruitment Strategy and Unemployment Benefits in an Efficiency Wage Model

It is well known that the recruitment strategy of firms depends on the state of the labour market. In order to account for this fact, we build a matching model where the differentiation of skills is explicit. Along the line of Salop (1979b) workers and firms are distributed on the same circle and the distance between two points on this circle measures the mismatch between a firm and a worker. Another feature of this model concerns wage setting. In a natural way, wages are subject to the constraint that good workers (i.e. workers who are not too far on the circle) prefer to keep their job. In addition, on a suggestion by Phelps (1992), we assume that workers who quit their job are not eligible to unemployment insurance. Two main results are established. First, the lower the tightness of the labour market the more stringent the requirements of firms are. Second, as a consequence of the incentive constraint, unemployment benefits appear to raise employment.