Soziale Einflüsse auf die Klassenwahl im Generationen- und Periodenvergleich:

Social influences on the class vote result in a higher SPD-vote of workers who live in class homogeneous environments. These environments can be operationalized as ego-centric networks. In West Germany, these social influences are restricted to older cohorts and earlier Bundestag elections. This result gets corroborated by applying a more sophisticated dynamic version of an influence model, which analyses the relationship between party identification and the vote intention. It is shown that workers who do not identify with a party get mobilized as SPD-voters during election campaigns if they have contacts with other workers. This effect cannot be observed with ALLBUS-data from 1980, 1990 and 2000 for which interviewing did not take place during election campaigns. What has not changed in the last decades is the recruitment of friends and acquaintances from the same social class and subjective class identification under the impact of class homogeneous networks. What has changed is the politisation of these class homogeneous networks.     

The maximization of determinants of block Toeplitz matrices with applications in optimal design theory

We consider the maximization of the determinant of the trigonometric moment matrix of a matrix measure on the unit circle. The results are analog to those obtained by Dette and Studden (2005) for moment matrices of matrix measures on a compact interval. A statistical application in optimal design theory is considered and we present several optimal designs for Fourier regression models.     

Determining Usage When Vendors Do Not Provide Data

ABSTRACT

When library resource vendors do not provide usage data in consistent, manipulable formats, librarians must find other means to enable themselves to make data-driven collection development decisions. At Eastern Kentucky University (EKU) Libraries, two different approaches have been implemented: OpenURL link resolver analysis and EZproxy log analysis using grep, a GNU open source command-line utility. This column provides an overview of each solution.     

Dark Flow,Depression and Multiline Slot Machine Play

Multiline slot machines allow for a unique outcome type referred to as a loss disguised as a win (LDW). An LDW occurs when a player gains credits on a spin, but fewer credits than their original wager (e.g. 15-cent gain on a 20-cent wager). These outcomes alter the gambler’s play experience by providing frequent, albeit smaller, credit gains throughout a playing session that are in fact net losses. Despite this negative overall value, research has shown that players physiologically respond to LDWs as if they are wins, not losses. These outcomes also create a “smoother” experience for the player that seems to promote a highly absorbing, flow-like state that we have called “dark flow”. Past research has indicated that there may be a relationship between problem gambling status and dark flow, as well as between dark flow, depression, and gambling expectancies. In this study, we sought to further understand these relationships, while examining the influence of LDWs on game preference in the context of single versus multiline slots play. We used a realistic slot machine simulator equipped with a force transducer to measure how hard players pressed the spin button following different outcomes. This measure of arousal showed that LDWs were treated similarly to small wins. Participants overwhelmingly preferred the multiline game and experienced more positive affect while playing it, compared to the single-line game. Problem gambling severity index scores were related to dark flow in both games, but this relationship was stronger for the multiline game. Additionally, depression symptomatology and dark flow were strongly correlated in the multiline game, with significant relationships between depression and gambling expectancy, and gambling expectancy and dark flow ratings also emerging.     

Peripheral Inclusion Through Informal Silencing and Voice — A Study of LGB Officers in the Swedish Police

Seen through the growth of progressive diversity policies it may appear that contemporary organizations are sites of equality. But although inclusion is the formally stated aim of many organizations, exclusionary pressures toward LGBT workers still challenge sexual minorities' access to full inclusion. A central concern in this paper is exploring how to understand inclusion in organizational contexts where inclusion is formally advocated, and yet where both inclusionary and exclusionary pressures exist. Drawing on an interview study of Swedish gay and lesbian police officers we present the concept ‘peripheral inclusion' as a way to understand inclusion in contemporary organizational life. In addition, we theorize that the dynamics between silencing and voice is a key mode that impacts the informal ways in which exclusion and inclusion occur. We thereby contribute to previous research on inclusion that has focused on the degree to which minorities are included by conceptualizing the mode in which inclusion occurs in everyday work. Studying modes and degrees of inclusion and exclusion in relation to each other highlights how inclusion is a collective and fragile process in which inclusionary and exclusionary pressures coexist, and that questions of who and what is included in contemporary organizations are shifting and open questions.     

The problem of being a paradigm: the emergence of neural stem cells as example for “Kuhnian” revolution in biology or misconception of the scientific community?

In a thought experiment we want to test how the emergence of adult neural stem cells could constitute an example for a scientific revolution in the sense of Thomas Kuhn. In his major work, “The structure of scientific revolutions, 3rd edn, University of Chicago Press, Chicago” (Kuhn 1996), the philosopher of science, Thomas Kuhn, states that scientific progress is not a cumulative process, but new theories appear by a rather revolutionary sequence of events. Kuhn built his theory on landmark events taken from chemistry and physics, lacking examples from biology. Beginning with Ramon y Cajal’s famous quote, “no new neurons after birth”, from the early years of the twentieth century, and Reynolds and Weiss’s conflicting finding in 1992 of adult neural stem cells giving rise to new neurons, we will test how the finding of neural stem cells in the adult brain matches with Kuhn’s theory. The pivotal problem of defining a paradigm will be our main focus, since the emergence of adult neural stem cells has been acclaimed by the scientific community as the rebuttal of Ramon y Cajal’s paradigm.     

Closeness,loneliness, support: Core ties and significant ties in personal communities

Past research has introduced further distinctions within the strong ties that form our personal communities. This work aimed at a comparison between core and significant ties in terms of their emotional closeness to ego, the social provisions that are exchanged, the relationship maintenance behaviours reported, and ego's loneliness. Measures for all these variables were assessed in a survey study. Evidence for a trade-off between the number of ties and their level of intimacy was obtained such that having more core ties was associated with lower levels of intimacy. Distinct signatures for friends from both sets of ties emerged for friendship maintenance behaviours and social provisions exchanged. Further, social and emotional loneliness were differentially related to the number and the intimacy of core and significant ties.     

Educational assortative mating: a micro‐educational approach

This article presents a new way of analysing educational assortative mating patterns, using a detailed ‘micro‐educational’ classification capturing both hierarchical and horizontal forms of educational differentiation. Taking advantage of rich Danish population data, we apply log‐linear models that include four ways of measuring educational homogamy patterns: (a) by returns to education, (b) by macro‐education (five aggregated levels), (c) by field of study (16 categories), and (d) by a disaggregated micro‐educational classification, combining levels and fields of study (54 groups). Our results show declines in educational homogamy from 1984 to 2013, but the odds ratios of being educationally homogamous at the university college and university levels remain of substantial magnitude, by both the macro‐ and micro‐educational measures. The micro‐educational classification outperforms all other measures in explaining the associations in the homogamy tables. The income measure (‘returns to education’) does a particularly poor job of explaining homogamy patterns from 1984 to 2013.     

Self-help for stress and burnout without therapist contact: An online randomised controlled trial

Interventions designed to reduce stress and burnout may be costly and access is limited. This study examined the effectiveness of a self-help book, using Acceptance and commitment therapy (ACT) to target stress and burnout in a randomised controlled online trial without any therapist contact. Participants were recruited through a newsletter of a health insurance company. Participants (N?=?119) who reported at least moderate levels of stress were randomly assigned to an immediate intervention (n?=?61) or a waitlist group (n?=?58). Measures before and after the intervention assessed stress, burnout (primary outcomes), depression, well-being, emotion regulation (secondary outcomes) and ACT-specific constructs. Compared to the waitlist group, participants in the immediate intervention group reported lower stress and burnout and higher psychological flexibility at post-assessment. Effects between groups were large for stress (d?=?0.9), moderate to large for burnout (d?=?0.5–0.8) and large for psychological flexibility (d?=?0.8). All primary and most secondary outcomes and ACT processes continued to improve in the 3-month-follow-up period. Results suggest that an ACT self-help book without any therapist contact is effective in reducing stress and burnout for various occupations. Thus, it may provide a cost-effective public health intervention for reducing stress and burnout.