Measuring ego-centered social networks on the web: Questionnaire design issues

Collecting survey data on ego-centered social networks is a difficult task, owing to the complex questionnaire format. Usually, the interviewer handles the dynamics of the question–answer exchange, motivates the respondent and ensures the proper recording of the data. Self-administered modes of data collection, especially web data collection, are more problematic, as the respondents are left alone with a complex and burdensome questionnaire. Therefore, questionnaire layout is crucial for ensuring cooperation and data quality. In this paper we examined three key components of the corresponding web questionnaire: the number of name boxes using a single name generator, question format for assessing alter characteristics (i.e. alter-wise vs. question-wise) and number of name interpreters (i.e. alter characteristics). The number of name boxes was found to be essential for the reported size of social networks and also for some aspects of data quality. Specific data quality effects were also found with respect to variations in question format, where question-wise format performed better than alter-wise. The number of name interpreters had a relatively minor effect. Suggestions for possible standardization of the web interface layout are also given, so that equivalence with other data collection modes can be established.     

Party Politics and Childcare: Comparing the Expansion of Service Provision in England and Germany

The expansion of childcare provision in the traditionally ‘service‐lean’ welfare states of England and Germany, in times when most other welfare programmes faced retrenchment, came with some surprise to the comparative social policy and political economy literature. With the expansion of employment‐oriented family policies, both countries have departed from their previous strong male breadwinner trajectories. Electoral competition and corresponding party and family policy modernisation in attempts to improve female voter mobilisation is key to understanding this paradigmatic shift informed by the adult worker model.     

A Transactional Model of Temperamental Development: Evidence of a Relationship between Child Temperament and Maternal Stress over Five Years

Although there is growing consensus that parental stress is a risk factor in child development, longitudinal studies of its effects are few. This study tested a sample of 231 mother–child dyads in terms of whether the relations between the global experience of stress in mothers (perceived stress scale) and child temperamental characteristics (infant behavior questionnaire and child behavior questionnaire) could be conceptualized through transactional models of development. The assumption was that higher negative emotionality and lower positive affectivity in the infants would contribute to an increase in maternal stress over a five‐year period, beginning in infancy, and that higher maternal stress would contribute to an increase in child negative affectivity and a decrease in positive affectivity and self‐regulation over the same period. Evidence was found for both hypotheses, but not within the same models: the effect of maternal stress on child temperamental development was greater. The results are discussed with reference to bidirectional models of temperamental development.     

Die Forschungsleistung der Soziologie an zehn deutschen Universitäten

Der Artikel stellt eine Methodik zur Bildung von bibliometrischen Ma?zahlen vor, mit denen sich die Forschungsleistung von Autoren, Institutionen, F?chern und F?chergruppen darstellen l?sst. Basierend auf den im SSCI erfassten wissenschaftlichen Artikeln, den Impaktfaktoren der Zeitschriften, in denen sie erschienen sind, sowie der H?ufigkeit, mit der die Artikel innerhalb der Zeitschriften des SSCI zitiert werden, beschreiben absolute und relative Publikations- und Zitationsma?e anschlie?end die Publikationsleistung der soziologischen Institute im Vergleich zu den anderen gro?en wirtschafts- und sozial-wissenschaftlichen F?chern Politologie, Betriebswirtschaftslehre und Volkswirtschaftslehre. An insgesamt zehn deutschen Hochschulen liegt die Soziologie bei der absoluten Zahl der Ver?ffentlichungen und Zitationen zwischen 1993 und 2002 weit hinter der Volkswirtschaftslehre, holt unter Berücksichtigung des eingesetzten Personals jedoch auf. Eine zweite Analyse vergleicht die Forschungsleistung der Institute für Soziologie an den zehn Standorten. Bei allen absoluten Ma?zahlen liegt die Universit?t Mannheim vorn. Unter Berücksichtigung der eingesetzten Mittel zeigt sich, dass die Soziologen der LMU München und der Universit?t zu K?ln qualitativ und quantitativ am produktivsten forschen und auch kleine Institute unter Effizienzgesichtspunkten wettbewerbsf?hig sind.     

Bayesian model learning based on a parallel MCMC strategy

We introduce a novel Markov chain Monte Carlo algorithm for estimation of posterior probabilities over discrete model spaces. Our learning approach is applicable to families of models for which the marginal likelihood can be analytically calculated, either exactly or approximately, given any fixed structure. It is argued that for certain model neighborhood structures, the ordinary reversible Metropolis-Hastings algorithm does not yield an appropriate solution to the estimation problem. Therefore, we develop an alternative, non-reversible algorithm which can avoid the scaling effect of the neighborhood. To efficiently explore a model space, a finite number of interacting parallel stochastic processes is utilized. Our interaction scheme enables exploration of several local neighborhoods of a model space simultaneously, while it prevents the absorption of any particular process to a relatively inferior state. We illustrate the advantages of our method by an application to a classification model. In particular, we use an extensive bacterial database and compare our results with results obtained by different methods for the same data.     

Psychosocial stressors at work, psychological stress and musculoskeletal symptoms in the care for the elderly

This study was conducted in order to determine how occupational stressors (psychosocial stressors and physical load) are related to psychological stress (symptoms) and musculoskeletal symptoms among staff of Finnish residential homes, nursing homes and home help services (n = 204). Data obtained from questionnaires was used to test two hypotheses: that psychosocial stressors (time pressure, troublesome patients with dementia) are associated with psychological stress, and that musculoskeletal disorders are associated with physical load. The authors also tested whether psychological stress has a mediating effect between psychosocial stressors and musculoskeletal symptoms. The findings supported the hypothesis regarding the mediating effect of psychological stress.