Median split, k-group split, and optimality in continuous populations

Continuous populations are grouped in many social, economic, medical, or technical fields of research. However, by grouping them, a lot of information provided by the continuous population is lost. Especially the median split, which is still adopted by many researchers, and its generalization to an equiprobable k-group split lead to a high efficiency loss. Here, this loss of information is investigated by analytical and numerical analyses for some typical symmetric and skew population distributions often found in applications. Various distribution parameters, numbers of groups, and split methods are taken from theoretical considerations and real data sets. Losses sometimes in excess of 50% can be reduced by optimal grouping.     

Relative Deprivation and Intergroup Prejudice

Using three diverse European surveys, we test the relationship between relative deprivation (RD) and anti-immigrant prejudice. We find that both group relative deprivation (GRD) and individual relative deprivation (IRD) are found primarily among working-class respondents who are politically alienated. We also find that GRD, but not IRD, serves as a proximal correlate of prejudice. IRD's effects on prejudice are largely mediated through GRD. In addition, GRD partially mediates the effects of such distal predictors of prejudice as education and family income. Finally, blaming the victim mediates in part the GRD link with prejudice. These results lead to a socially situated path model of RD's effects on prejudice with public policy implications.     

Nonparametric Matching and Efficient Estimators of Homothetically Separable Functions

For vectors z and w and scalar v, let r(v, z, w) be a function that can be nonparametrically estimated consistently and asymptotically normally, such as a distribution, density, or conditional mean regression function. We provide consistent, asymptotically normal nonparametric estimators for the functions G and H, where r(v, z, w) = H[vG(z), w], and some related models. This framework encompasses homothetic and homothetically separable functions, and transformed partly additive models r(v, z, w) = h[v + g(z), w] for unknown functions gand h Such models reduce the curse of dimensionality, provide a natural generalization of linear index models, and are widely used in utility, production, and cost function applications. We also provide an estimator of Gthat is oracle efficient, achieving the same performance as an estimator based on local least squares when H is known.     

Die Zwänge der Gruppe und die Grenzen professionellen Handelns

Like other methods in social, psychological and therapeutical work the professional identity of group dynamics trainers is directed towards freedom of will and autonomy of the clients. Nevertheless, matters of social control are already of importance in the work of Kurt Lewin, one of the founders of group dynamics, specially in his concept of reeducation. These ideas are complemented by the concepts of sociologist and groupanalysist Norbert Elias about the ambivalent effects of internalised social control. This leads to a short analysis of the changing mechanisms of social control in groups and organisations and its consequences for applied group dynamics and its professional standards.     

Explaining the demand for structured financial products: survey and field experiment evidence

In many countries structured investment products are popular among retail investors. We explain the demand for these products using unique field data where we let subjects freely design their “favorite” structured product. Results suggest that the supply with capital protected products (guarantee certificates) might indeed be demand-driven. This does not seem to be the case for other product categories where marketing and sales practices might play a more important role. In a survey among financial practitioners we find furthermore that a demand for capital protected products can be explained by loss aversion and saving motifs, e.g. for buying a house.     

A LOOK AT THE SEMANTIC DIFFERENTIAL AS A TOOL TO ASSIST FACULTY TEACHING EVALUATIONS

The evaluation of the effectiveness of faculty teaching is a difficult process. This paper presents the results of an experimental empirical investigation into the possibility of using a psycho-linguistic measurement technique, the Semantic Differential, to measure faculty communication of terminology to students. This measurement could be used to supplement other teaching evaluation devices. The paper determines a set of “key concepts,” derives a set of S.D. meanings from a Faculty to act as a standard, and measures student meanings at the beginning and end of an introductory course. These sets of meanings are then compared.     

The transformation of Industrial Citizenship in the course of European integration

The question of the social dimension of European integration has so far remained unsettled. While on the European level, the civil and political dimension of citizenship has been strengthened, the evolution of economic and social rights are unclear, contradictory—and still under-investigated. Our contribution applies citizenship as a central category of modernization theory to inquire into European integration. In particular, our focus is set on the analysis of Economic Citizenship as a specific category of civil rights in the case of Germany. We discuss these dynamics by drawing on the example of three policy fields which illustrate various levels of Economic Citizenship. In this article we are pursuing two goals: Firstly, we revise Marshall's modernization theory against the background of European integration. Secondly, we draw attention to the concept of Industrial Citizenship, which has so far been neglected as a source of further development. We argue that in the process of European integration, industrial rights develop through a double movement, meaning an individual extension of market-based rights complemented through national de-collectivization and—connected to this—a re-stratification of market correcting rights.