SCREENING DISABILITY INSURANCE APPLICATIONS

This paper investigates the effects of stricter screening of disability insurance applications. A large‐scale experiment was set up wherein two of the 26 Dutch regions caseworkers of the disability insurance administration were instructed to screen applications more stringently. The empirical results show that stricter screening reduces long‐term sickness absenteeism and disability insurance applications. We find evidence for direct effects of stricter screening on work resumption during the period of sickness absence and for self‐screening by potential disability insurance applicants. Furthermore, stricter screening improves targeting efficiency without inducing negative spillover effects on the inflow into unemployment insurance.     

Empirical testing of the expected utility model

Suppose an individual is faced with a set of alternatives with uncertain money outcomes, then according to the expected utilily moded the alternative with the highest cxpected utility will be chosen. In the present paper this model is tested against the more general model given by Kahneman and Iversky (1979) and others. As contrasted with usual practice, the test is based on an exogenously measured utility function. The result of the test is that the expected utility model has to be rejected, both for a concavee and for an S-shaped specification of the utility function. The subjective evaluation of an objectve probability of 0.5 is in this study estimated at a value of 0.45 or 0.47. depending on the functional specification used.Our main conclusion is that although the hypotlicsis of expected utility has to be rejected, for practical purposes the difference between 0.5 and 0.45 (0.47) is so slight, that the hypothesis is a good working approximation. We do not know whether this remains true for valus of the objective probability considerably different from 0.5.     

Factual versus representational utilities and their interdimensional comparisons

In spite of the formal analogy of multidimensional individual choice (MIC) to social choice (SC), interdimensional utility comparisons do result from MIC but interpersonal utility comparisons do not result from SC. This anomaly is clarified via the basic differences between MIC and SC, and related to the distinction between representational a posteriori and factual a priori measurement based on, respectively, a biconditional and a uniconditional correspondence rule. Sen's notion of partial interpersonal comparability of utility is shown to be solely in the realm of factual measurement.     

Network constraints on social action: preliminaries for a network theory

The network approach to social reality lacks a theoretical body that backs up the assumption of the working of structural rules. This contribution is an attempt toward investigation of the possibility of a theory of the effects of network properties on social action. The structure and effects of social networks vary along with the aims put forward in the relations of which they are composed. Considering those aims, three different sorts of networks can be distinguished — sentiment-, interest- and power-networks — involving distinct action logics. When the nature of the ties is known, predictions about the structure of the resulting social networks, type of social control and type of exchange taking place within them, can be made.     

Raising Societal Support for Development Cooperation: The Role of Students’ Exchange Programs

This article analyzes the development education and exchange activities of the Dutch development organization Edukans with its longstanding experience in the “Going Global” program among secondary schools in The Netherlands. Based on a survey with 186 direct participants in the foreign exchange program and 608 schoolmates at 126 secondary schools, a detailed analysis is made of differences in knowledge, attitudes, and behavior with respect to international cooperation, and tolerance regarding ethnic minorities. To guarantee unbiased impact assessment, the same data is collected among 276 students of a comparison group. Propensity score-matching techniques are used for data analysis, controlling for intrinsic differences among the three groups. Results show that international exchange programs have a significant positive impact on all four dimensions of societal support of the direct participants compared to their schoolmates. Only knowledge and attitudes changes are registered in the scores of the schoolmates compared to the comparison group. These outcomes remain robust when corrected for individual and school characteristics, parental background, and political preferences, and when unobserved heterogeneity is included.     

Digraph Competitions and Cooperative Games

Digraph games are cooperative TU-games associated to domination structures which can be modeled by directed graphs. Examples come from sports competitions or from simple majority win digraphs corresponding to preference profiles in social choice theory. The Shapley value, core, marginal vectors and selectope vectors of digraph games are characterized in terms of so-called simple score vectors. A general characterization of the class of (almost positive) TU-games where each selectope vector is a marginal vector is provided in terms of game semi-circuits. Finally, applications to the ranking of teams in sports competitions and of alternatives in social choice theory are discussed.