Die Auswirkungen von Neid auf individuelle Leistungen: Ergebnisse einer Panelanalyse

Relative income differences are likely to lead to envy within a reference group. Envy in turn influences social behavior and individual performance. While positional concerns are apparent in daily life, empirical evidence is rare in the economic literature. This paper investigates the impact of the relative income position on individuals’ performance or productivity. As ?performance“ is difficult to measure we turn to soccer players whose performance has been well documented. The broad sample covers eight seasons of the German premier soccer league (Bundesliga) between 1995 and 2004, and includes 1040 players, a salary proxy and several performance variables. The results show that player performance is strongly affected by relative income position. A disadvantage in the relative income position reduces productivity. The larger the income differences within a team, the stronger are the effects of positional concern. Team composition also significantly affects behaviour.     

F?rdern aktienkursbasierte Vergütungsinstrumente langfristig orientierte Unternehmensentscheidungen? Lehren aus der Kreditkrise

The question whether stock-based management incentives encourage long-term oriented management decisions is the topic of a controversial public debate. Also, the existing academic literature provides no clear picture, mainly due to endogeneity problems. In this paper, we reexamine the issue in the context of the recent credit crises, which allows us to solve the endogeneity problem. In the empirical analysis we find that firms, which have awarded stock-based incentives to their executives prior or during the financial crises, face substantially lower cuts in investment spending. These firms also show higher levels of R&D investments during the financial crises. Overall, our results suggest that stock based long-term incentives promote long-term oriented management decisions.     

Older Drivers Retiring From the Road: An Application of the Selection,Optimization, and Compensation Model

Purpose: This study uses the selection, optimization, and compensation (SOC) model to compare older adults who have given up driving, those who still drive, and those who drive less to identify differences in the three groups. Design and Methods: This cross-sectional study of 281 older adults is part of the Naturally Occurring Retirement Community Demonstration Project. Study participants completed interviews that included questions on demographics, health and functioning, mental health, social support, and current levels of engagement in activities including current driving status. Results: Data suggest that driving retirement is a process and that a substantial number of people are in the transitional stage, where they are less functional than those who still drive and more similar to those who have retired from the road. Implications: Given the similarity of those who drive less to those who have given up driving, front-line professionals and policy makers must work together to ease the transition to driving retirement for those without adequate ability to effectively compensate for their inability to continue to drive safely.     

Die deutschen Gewerkschaften: Ein Review der aktuellen Forschungsliteratur

Unions, particularly in Germany, are the subject matter of intense public debates as well as discussions in academic research, which corroborate the former. The last systematically conducted analysis of the status quo in academic research was done in spring 2001. In view of the rather dramatic symptoms of the crisis German unions are facing, it is time to incorporate the latest results of scientific research. This paper addresses this task against the background of a systematic literature review. Three application areas are distilled out of a total of 79 pieces of research that are considered relevant and intensively discussed: (1) the membership in German unions, (2) the unions in the German system of industrial relations and (3) the reformation of the German unions. The detected symptoms of the unions' crisis are impressively documented and explained by the studies. However, shortcomings regarding the respective research questions and the development of recommendations for future courses of action for the unions can also be identified.     

Die Akzeptanz der elektronischen Gesundheitskarte in Deutschland

Against the background of the increasing importance of eHealth, this contribution concentrates on the issue of acceptance regarding the introduction of the electronic health card (English for elektronische Gesundheitskarte, hereinafter referred to as eHC) on the part of the service providing health institutions. After presenting the general issue, the relevance of the subject is described and the eHC is defined. Then the eHC is classified in terms of terminology and afterwards the current state of research of investigations regarding acceptance in the field of eHC is presented and evaluated. Based on both the technology acceptance model and the relevant literature, the important factors influencing the attitude towards and the eventual use of the eHC are conceptualized and integrated in an investigation model. The empirical investigation took place throughout Germany within the scope of an online survey of the health care providers. All in all, 502 questionnaires were reflected in the evaluation of the willingness of acceptance. The empirical results show that regarding the perceived usefulness the performance of the system and a well balanced cost-/benefit-ratio lead to an increasing acceptance of the eHC. Being integrated in the decision process, however, is not relevant for the German physicians. Within the context of the perceived ease of use the compatibility of the system is much less relevant than the controllability or the general usability.     

Wissensvermittlung in Beratungsprozessen

In the science of counseling there nearly has been no theoretical reflection on the phenomena of how knowledge effects the orderliness, structure and sequential patterns of interaction in counseling. In the scientific field of educational analysis, increasing attention has been given to the debates of knowledge societies and knowledge management. In the present discussions many concepts of ??knowledge?? are based on a cognitive model using terms like ??content?? and ??data??. In contrast to this theoretical view, a knowledge based framework to research micro-processes of guidance and counseling is developed. The method of qualitative Conversation Analysis, based on ethnomethodological principles, is used to establish an interpretive account of the interactional process in a counseling context. Based on this analysis, a model with four dimensions is developed identifying different action formations which illustrate not only ideal but also problematic aspects of career guidance and counseling.     

骨质疏松的预防和饮食

为什么每天喝牛奶还会得骨质疏松？造成骨质疏松的原因不仅是钙的摄入量不足导致的缺钙,维生素C、蛋白质和胶原蛋白的合成发生障碍导致的骨有机基质生成不良才是首发因素。