PRIVATE GOOD,EXTERNALITY, PUBLIC GOOD*

In two recent investigations into the economic problems of externality the authors have noted in passing that the welfare or optimality conditions in the case of a consumption externality seemed identical with the welfare conditions in the case of public goods as originally stated by Samuelson.¹ The purpose of this paper is to demonstrate that the welfare conditions for a public good are a special case of the welfare conditions for a consumption externality where a public good is defined as a good ‘which all enjoy in common in the sense that each individual's consumption of such a good leads to no subtraction from any other individual's consumption of that good’ (Samuelson [4]). Since the welfare conditions for a private good are also a special case of the welfare conditions for a consumption externality, it follows that we have a range of externality with the pure private good and the pure public good as polar cases.     

The macroeconomics of unbalanced growth and the expanding public sector: Some simple tests of a model of government growth

A now classic model of public sector growth is Baumol's (1967) ‘Macroeconomics of Unbalanced Growth’. That model implies that one cause of public sector expenditure growth is a low or zero rate of productivity growth in the public sector relative to the private sector. Previous studies have tested, and partially confirmed, the Baumol hypothesis by computing productivity indices for various public sector activities. In this paper I attempt to test that model in a more direct manner. The unbalanced growth model is used to predict growth rates of per capita government expenditures, government's share of GNP and the pattern of government expenditure growth. These predictions are compared with observed growth rates of aggregate government expenditures. The model predicts the growth rate aggregate government expenditures, the growth rate of government's share of GNP, and the pattern of government expenditure growth reasonably well, and the data tend to support the Baumol model.     

The effect of sequential entry on choice of location

An important aspect of economics arises when entry into a market of differentiated products is sequential and essentially irrevocable. An approach to the investigation of this problem is offered by the theory of spatial competition. We consider a market consisting of a line segment or its equivalent and assume irrevocable location choices for all sellers, each of whom pursues a ‘maximin’ strategy in selecting a location, and negative elasticity of demand for all buyers. Results for small N are generalised to any finite N and the patterns are evaluated on a criterion of ‘Buyers' Welfare’.     

Feles: The functionalized extended linear expenditure system: Theory,estimation procedures and application to individual household consumption expenditures involving socioeconomic and sociodemographic characteristics

This article introduces the Functionalized Extended Linear Expenditure System, FELES, a new extension on Lluch's familiar Extended Linear Expenditure System. Household individual expenditures with respect to ‘subsistence expenditures’ and ‘partial marginal propensities to consume’ are made explicitly dependent on socioeconomic and sociodemographic characteristics in a system-wide approach. A restricted maximum likelihood estimator for relatively small systems with few explanatory variables and an iterative estimation procedure for larger systems with an extensive set of explanatory variables are proposed. The complete FELES then is applied to cross-sectional data with more than 47,000 German households. Stone's LES and Lluch's ELES are first quantified too on a German data base of this extent.     

Schumpeter and the theory of capitalist economic development

This paper gives a centenary appreciation of the contributions to economic thought of Joseph A. Schumpeter, with special focus on his work, The Theory of Economic Development (TED) it proceeds, first, by providing (in section 1) an overview of Schumpeter's life and works; second, by giving an interpretative exposition of the main themes of TED (in section 2) and Schumpeter's broader ‘economic sociology’ (in section 3) in terms of the place of these ideas in the history of economic thought; third, by examining the reception to TED and the impact of it and Schumpeter's dynamic methodology on the discipline (in section 4).     

Explaining aggregate investment in Britain: The importance of Tobin's Q

This note reports on work done in testing Tobin's ‘Q’ theory of investment on British data. Investment by industrial and commercial companies over 1960–1977 was studied. Q was found to be both significant and important, outperforming other plausible variables.     

Dividend taxes,corporate investment,and ‘Q’

Taxes on corporate distributions have traditionally been regarded as a ‘double tax’ on corporate income. This view implies that while the total effective tax rate on corporate source income affects real economic decisions, the distribution of this tax burden between the shareholders and the corporation is irrelevant. Recent research has suggested an alternative to this traditional view. One explanation of why firms in the United States pay dividends in spite of the heavy tax liabilities associated with this form of distribution is that the stock market capitalizes the tax payments associated with corporate distributions. This capitalization leaves investors indifferent at the margin between a corporation's decision to pay out dividends or to retain earnings. This alternative view holds that while changes in the dividend tax rate will affect shareholder wealth, they will have no impact on corporate investment decisions.This paper develops econometric tests which distinguish between these two views of dividend taxation. By extending Tobin's ‘q’ theory of investment to incorporate taxes at both the corporate and personal levels, the implications of each view for corporate investment decisions can be derived. The competing views may be tested by comparing the performance of investment equations estimated under each theory's predictions. British time series data are particularly appropriate for testing hypotheses about dividend taxes because of the substantial postwar variation in effective tax rates on corporate distributions. The econometric results suggest that dividend taxes have important effects on investment decisions.     

Conspicuous consumption and generation replacement in a model of perpetual youth

This paper investigates household decisions in an overlapping generations model in which individual utility depends on a weighted average of consumption of one's peers. In contrast to representative agent economies, the consumption externality generally affects savings and growth rates. The effects critically depend on the rate at which labor productivity changes with age. For a high (low) rate, the externality lowers (raises) the steady state propensity to consume out of total wealth. The optimal allocation can be decentralized by a (reverse) unfunded social security system if the rate of labor productivity decline is high (low). In contrast to discrete time OLG models, the optimal steady state capital income tax is zero, in spite of the externality.     

Distribution of a generalized t ratio for biased estimators

For certain biased estimators the standard error can be small (even zero) and Student's t ratio over-estimates their statistical significance. This paper studies the distribution of a generalized t ratio where the denominator has the square root of an unbiased estimate of the mean squared error.     

Factor substitution,ex ante and ex post

The amount of labor used per unit of capital stock (or investment) can be varied by any one of four quite different mechanisms. Two of these – changes in crew size and in capital utilization – are variable even ex post. These mechanisms are systemmatically related and all induce factor substitution in the same (neoclassical) direction with a change in relative factor prices. The conditions necessary to support the view that ‘factor prices don't matter’ are shown to be terribly stringent.     

The dynamics of some duopoly games involving the Market Share and Nichol strategies

The paper analyses the dynamics of some duopoly output games involving the Cournot, Market-Share and Nichol strategies. The model assumes linear price and cost functions and supposes that outputs are adjusted instantaneously at discrete time intervals. For all games considered, equilibrium is either reached after a finite number of moves or a stable approach to equilibrium occurs as t → ∞. In fact, apart from a few uninteresting cases, arising from the oversimplified form of the Market-Share strategy, all equilibrium points lie on specified parts of the firms' Cournot loci.     

Knowledge disclosure as intellectual property rights protection

We consider the problem of an inventor who discloses knowledge under the threat of a rival who may patent a competing idea. Disclosure diminishes the probability that the rival has of receiving a patent (legal externality) but it also decreases the rival’s marginal R&D cost (knowledge externality). Our results reveal that: (i) when the knowledge externality is ‘large’ (‘small’) relative to the legal one, an increase (decrease) in the patentability standard leads to higher disclosure and promotes R&D and (ii) if subsequent research creates positive external effects, the patentability standard should be set to promote further disclosure and R&D in equilibrium. The impact on the equilibrium configuration of changes in market profits is also examined.     

Rights and relations in modern economic theory

The paper is the 1980 Böhm-Bawerk-lecture given at the University of Innsbruck. Starting from Böhm-Bawerk's book. ‘Rights and relations from the point of view of the economic theory of goods’ the paper tries to evaluate rights and phenomena like goodwill from the perspective of innovation. A framework of three levels of economic activity is developed. The three levels are: consumption (the lowest level), production and innovation (the highest level). Rights are interpreted as instruments of protection of higher level activity from lower level activity. Focus of attention are industries with very high rates of technical progress and innovation. There the most important positive externality of innovation is the increased potential for even more innovations. It is argued that competition policy, as a rule of thumb, must foster competition by innovation and must discourage competition by imitation.     

Some extensions of a claim of Aumann in an axiomatic model of knowledge

The paper begins by presenting an axiomatic model of simple and iterated knowledge. A formal definition of the intuitive notion of common knowledge is given and shown equivalent to previous characterizations. It is shown that agents have information partitions. The second part generalizes Aumann's (Ann. Statist.4 (1976), 1236–1239) well-known propositions about common knowledge between two rational agents of each other's probability assignments. It is shown that: common knowledge of decisions—if these are rational—implies a common decision for like-minded agents; and that a “dialogue” in decisions leads to a common decision. A “no-trade” theorem is given which includes trade under complete uncertainty.     

Intellectual property rights as development determinants

Abstract While intellectual property rights (IPRs) are the key drivers of economic performance in R&D based growth models, they have not been fully explored in empirical development studies. We introduce IPRs to this literature, using Two‐Stage Least Squares Bayesian Model Averaging to address endogeneity and model uncertainty at the instrument and income stages. We show that IPRs exert effects similar to ‘Rule of Law’ and therefore provide robust evidence that both physical and intellectual property rights are crucial development determinants. We document that unenforced IPRs exert no effect on development. Instead, it is the level of enforced IPRs that causes development.     

On preserving the reservation wage property in a continuous job search model

The purpose of this article is to examine a continuous model of job search. Job offers are received randomly over time according to a renewal process. The wage offers are assumed to be positive, independent, and identically distributed random variables. There is a search cost of c monetary units per unit time. The only decision the searcher must make is when to stop searching and accept an offer. It is shown that the optimal stopping strategy which maximizes the searcher's expected net return over the class of all stopping times possesses the reservation wage property, provided that the interarrival time between two successive job offers in NBUE (new better than used in expectation).     

Candidate reputations and the ‘incumbency effect’

A major shortcoming of the classical median voter model is that its central prediction — convergence of platforms to the median voter's ideal — is seldom observed. One reason is that the classical model neglects the importance of voter expectations as a determinant of votes. Here we associate voters' expectations about candidates with past as well as current candidate pronouncements, and assume that incumbents whose actions are consistent with their ‘reputations’ are perceived as less risky than challengers. In equilibrium candidates choose distinct platforms. Typically neither adopts the median voter's ideal point. Either candidate may win depending on how well the incumbent's reputation reflects current voter tastes and how relatively ‘risky’ the electorate perceives the challenger to be.     

The treatment of ‘quality’ in the cost of living index

This paper develops the implications of cost of living index theory for measuring the impact of changes in the availability and prices of goods on a household's welfare. It considers both the ‘goods approach’, which treats each variety as a separate entity, and two characteristics approaches: ‘L-characteristics’ and ‘H-characteristics’. L-characteristics are Lancaster's ‘linear and additive’ specification; H-characteristics are Houthakker's ‘heterogeneous’ specification in which the household consumes only a single variety of each product. The paper concludes by discussing the implications of the theory for actual index number construction and relating it to the literature on ‘quality’ and ‘hedonic indexes’.