Book reviews

Ohne Zusammenfassung     

Klientenorientiert beraten

Mitarbeiter im Pflegerstützpunkt - Das Pflegeweiterentwicklungsgesetz (PfWG) hat die Beratung und Unterstützung von Menschen mit Pflegebedarf zur Regelversorgung erhoben. Die Deutsche Gesellschaft für Care und Case Management hat für die Weiterbildung von Mitarbeitern in Pflegestützpunkten Standards erarbeitet.     

Taxpayers' attitudes, behavior, and perception of fairness

This paper investigates taxpayers' attitudes, behavior, and perception of fairness with respect to taxation using data drawn from a survey among German employees. It is shown that there is a large gulf between subjects' attitudes towards taxation and their behavior. Although most subjects profess that their own taxation is either too high or far too high, up to 60 percent of them judge tax burdens to be fair which exceed actual taxation by far. Moreover, the great majority of those subjects opting for a proportional tax scale implicitly state tax burdens which are consistent with a progressive tax scale only. Finally, we find overwhelming rejection of one of the core elements of the German income tax system, namely spouse tax splitting.     

DISTRIBUTION-INVARIANT RISK MEASURES, INFORMATION, AND DYNAMIC CONSISTENCY

In the first part of the paper, we characterize distribution-invariant risk measures with convex acceptance and rejection sets on the level of distributions. It is shown that these risk measures are closely related to utility-based shortfall risk.
In the second part of the paper, we provide an axiomatic characterization for distribution-invariant dynamic risk measures of terminal payments. We prove a representation theorem and investigate the relation to static risk measures. A key insight of the paper is that dynamic consistency and the notion of "measure convex sets of probability measures" are intimately related. This result implies that under weak conditions dynamically consistent dynamic risk measures can be represented by static utility-based shortfall risk.     

The Violent and the Weak

A bstract .   This article explores conditions under which dictators comply with a social contract. We assume society to consist of two groups: one with a comparative advantage in using violence, the other with a comparative advantage in producing private goods. Violence can be used to produce security or to exploit the weaker group. The opportunity for exploitation is limited: it reduces the incentives of the exploited to produce private goods and increases the chances of revolution. Social contracts consist of the exchange of security against a share of the private good, produced at a high effort level. The model allows the derivation of conditions for either compliance or exploitation to occur and provides a comparative static explanation for the transition from one form of government to the other. Thus, it contributes to positive constitutional economics, the research program that is interested in explaining the emergence and change of constitutions.     

Joint Production,Externalities, and the Regulation of Production Networks

Real production systems are often vertically integrated in thesense that one production process uses the unwanted joint product of another production process as input.This interrelationship links in a non-obvious way the different negative externalities stemming from theproduction processes. An empirical example is the sulphuric acid industry. Our model of a vertically integratedproduction system shows how internalising one currently existing externality may create another externalitywhich has thus far not been existent. We also discuss how environmental policy could deal with this problemwhen regulating integrated production systems.     

Semiparametric three‐step estimation methods for simultaneous equation systems

This paper proposes a new method for estimating a structural model of labour supply in which hours of work depend on (log) wages and the wage rate is considered endogenous. The main innovation with respect to other related estimation procedures is that a nonparametric additive structure in the hours of work equation is permitted. Though the focus of the paper is on this particular application, a three‐step methodology for estimating models in the presence of the above econometric problems is described. In the first step the reduced form parameters of the participation equation are estimated by a maximum likelihood procedure adapted for estimation of an additive nonparametric function. In the second step the structural parameters of the wage equation are estimated after obtaining the selection‐corrected conditional mean function. Finally, in the third step the structural parameters of the labour supply equation are estimated using local maximum likelihood estimation techniques. The paper concludes with an application to illustrate the feasibility, performance and possible gain of using this method. Copyright © 2005 John Wiley & Sons, Ltd.     

The conditional CAPM does not explain asset-pricing anomalies

Recent studies suggest that the conditional CAPM holds, period by period, and that time-variation in risk and expected returns can explain why the unconditional CAPM fails. In contrast, we argue that variation in betas and the equity premium would have to be implausibly large to explain important asset-pricing anomalies like momentum and the value premium. We also provide a simple new test of the conditional CAPM using direct estimates of conditional alphas and betas from short-window regressions, avoiding the need to specify conditioning information. The tests show that the conditional CAPM performs nearly as poorly as the unconditional CAPM, consistent with our analytical results.