Einstellungen gegenüber ?lteren Besch?ftigten

The ??Beliefs About Older Workers Questionnaire?? (Hassell und Perrewe, Journal of Organizational Behavior 16(5):457?C468, 1995) was developed to analyze beliefs about older workers and comprises 27 questions. In this article we present a German version of the ??Beliefs About Older Workers Questionnaire??. We design two versions of the questionnaire, one for beliefs about older female and one for beliefs about older male workers. We report results of a study in which the German questionnaires for male and female workers were administered and tested for the first time. We observed neutral to slightly negative beliefs about older workers. The study identified impacts of the gender of subjects and objects on beliefs about older workers. However, these were rather small. Organizations could profit from instruments like the presented questionnaire to identify age stereotypes and the need for accordant measures. Repeated application of the questionnaire or simultaneous application in other organizational units or organizations would enable organizations to evaluate applied measures or to learn from good practice in other organizational units or organizations.     

Warum und wodurch Coaching wirkt

The contribution reviews the state oft the art of the research on general success factors in the coaching process. Research in the field of psychotherapy on basic variables of client centered counseling and general therapeutic change mechanisms set an example. Results of first studies on these and modified factors show that the coaching outcome depends on observed esteem and emotional support by the coach, resource activation and support of transfer into practice. Process analysis of nonverbal interactions between coach and client demonstrate that goal attainment influence goal attainment. Finally, the paper focuses on limitations, of the studies, scientific and practical conclusions as well as future perspectives.     

Temporal Responsiveness in Mother–Child Dialogue: A Longitudinal Analysis of Children with Normal Hearing and Hearing Loss

Dialogue between conversational partners, including mothers and their children, is precisely timed. The predictability of this timing is important for establishing and maintaining interaction, communication, and learning. This longitudinal study examines changes in the response latency of utterances in dialogue between mothers and their normal hearing and hearing‐impaired children between 4 and 60 months of age. Mothers and their children showed parallel developmental trends, responding to each other more quickly at older ages. Beyond these age‐related group effects, significant dyadic effects were found in which individual children's latencies were related to those of their mothers, and vice versa. Developmental patterns did not significantly differ across hearing status groups, which may reflect the role of early identification and intervention in promoting positive developmental outcomes.     

Technische Softwaredokumentation unter ?konomischen Gesichtspunkten – Ein formal-deduktiver Ansatz

Only a very low priority seems to be given to software documentation. For example, about 80% of the software systems in production worldwide are badly documented. In contrast empirical studies confirm that an adequate technical documentation reduces the error rate of subsequent changes during software maintenance. This leads to the question about the optimal scale of investment in technical documentation in any software project. In research, this decision problem has been largely neglected. Since underlying cause-effect relationships may be empirically hard to detect, this paper proposes a new deductive approach, which compares the present value of payments for the documentation and bug fixing. The basis of this model is the phenomenon of error propagation from one component to adjacent components through its dependencies. As a result the following hypothesis can be inferred: It is always beneficial to document too much rather than comparatively too little even for an arbitrarily low quality of documentation and for any required rate of interest. This hypothesis shows robustness even against some changes in assumptions.     

The effects of state-dependent human behavior on the design of a serial line

Most research on line design assumes that human operators perform independently from the status of the line. Recent empirical evidence is contradictory. Humans are likely to change their working speed if they might otherwise cause idle time (Schultz et al., Manage Sci 44(12):1595–1607, 1998). This peculiarity of worker behavior is observed in a variety of settings but little is still known about optimal line design that accounts for this more realistic modeling of worker behavior. Therefore, we analyze work allocation in a serial line with limited buffer capacity and adaptive human behavior. An extensive simulation study reveals that optimal work allocation in state-dependent models is different from classical state-independent models. A bowl-shaped work allocation might be suboptimal and design guidelines are more complicated. Depending on the extent of human reactions, a bowl-shaped, balanced, or reversed-bowl work allocation can be preferable.