Social welfare functions that satisfy Pareto,anonymity, and neutrality,but not independence of irrelevant alternatives

In the presence of Pareto, non-dictatorship, full domain, and transitivity, an extremely weak independence condition disallows both anonymity and neutrality.     

Wer spielt die Musik?

Media play a crucial role in the development of children and young people, together with the influence of parents, family and peer groups. Looking at an important topic in adolescents’ lives, i.e. contemporary music, this pilot study analyzes the relationship between media and interpersonal communication. Its theoretical grounds refer to the notion of a multi-step flow of communication. Based on a snowball sample of 72 pupils, aged between 14 and 16 and coming from different schools in Germany, 687 relations between respondents and their communication partners could be identified. Interviews were conducted face-to-face and by telephone in 2001. The questionnaire included a network generator based on seven items, an assessment of relationship characteristics and communication roles taken with each partner and several controls such as media use patterns or relevance and expertise in the field of music. According to our results, the concept of opinion leadership can be applied to the roles of pupils in the classroom, and the social network approach allows for a distinct view on their communication patterns. The size of pupils’ networks was between seven and 12 persons in average, most of the networks being dense and consisting of strong relationships. Due to the still important role of the parents, the homogeneity in age and education was rather low. The results also indicate the presence of opinion leaders among groups of adolescents, characterized by central positions within the communication network in class. The case study could identify several roles, e.g. stars, bridges, liaisons, structural holes and isolated persons. On the other hand, there is no evidence for a substantially different type of media use by opinion leaders, which challenges the original assumption of a multi-step-flow of communication.     

Transforming Social Work Curricula: Institutional Supports for Promoting Sustainability

Due to the centrality of human rights and social justice in the profession, social work must collectively take a stand on ecological degradation and the climate crisis. Overall, social work education's engagement with issues of sustainability and an expanded ecological justice perspective has been peripheral and piecemeal. It is crucial that social work education expand opportunities to prepare social workers to respond to the global environmental crisis. This conceptual paper considers strategies for integrating environmental content in social work curricula and addresses the essential role of institutional supports for curricular change and professional development focused on sustainability. The role of institutional supports to advance curricular change to respond to environmental crises and promote sustainability is highlighted, along with specific examples from the authors' home institution, including (1) institutional commitment and culture, (2) curricular supports and guidelines, and (3) interdisciplinary faculty development.     

Increasing inter‐generational social mobility: is educational expansion the answer?

Reforms which increase the stock of education in a society have long been held by policy‐makers as key to improving rates of intergenerational social mobility. Yet, despite the intuitive plausibility of this idea, the empirical evidence in support of an effect of educational expansion on social fluidity is both indirect and weak. In this paper we use the raising of the minimum school leaving age from 15 to 16 years in England and Wales in 1972 to estimate the effect of educational participation and qualification attainment on rates of intergenerational social class mobility. Because, in expectation, children born immediately before and after the policy was implemented are statistically exchangeable, the difference in the amount of education they received may be treated as exogenously determined. The exogenous nature of the additional education gain means that differences in rates of social mobility between cohorts affected by the reform can be treated as having been caused by the additional education. The data for the analysis come from the ONS Longitudinal Study, which links individual records from successive decennial censuses between 1971 and 2001. Our findings show that, although the reform resulted in an increase in educational attainment in the population as a whole and a weakening of the association between attainment and class origin, there was no reliably discernible increase in the rate of intergenerational social mobility.     

The Environmental Consequences of Rural and Urban Population Change: An Exploratory Spatial Panel Study of Forest Cover in the Southern United States, 2001–2006

This exploratory study examines the effects of rural and urban population change on forest cover at the local level across the southern United States. Using county‐level data from the National Land Cover Database and other U.S. government sources, we regressed the total area of forest cover on rural and urban population size in spatial panel models with two‐way fixed effects. When we controlled for several other factors, including the number of forestry operations at the county level, regression results indicate that urban change had no effect, but rural population size was positively related to total forest area, and this effect was most pronounced in and around Georgia. Thus, in areas of the southern United States, rural growth was associated with afforestation, not deforestation. We speculate on how this unusual finding contributes to the debate between ecological modernization and urban political economy implicated in previous cross‐national research.     

Manager Characteristics and Employee Job Insecurity around a Merger Announcement: The Role of Status and Crossover

Most existing research theorizes individual factors as predictors of perceived job insecurity. Incorporating contextual and organizational factors at an information technology organization where a merger was announced during data collection, we draw on status expectations and crossover theories to investigate whether managers' characteristics and insecurity shape their employees' job insecurity. We find having an Asian as opposed to a White manager is associated with lower job insecurity, whereas managers' own insecurity positively predicts employees' insecurity. Also contingent on the organizational climate, managers' own tenure buffers, and managers' perceived job insecurity magnifies insecurity of employees interviewed after a merger announcement, further specifying status expectations theory by considering context.     

Generalized Estimation of the BLUP in Mixed-Effects Models: A Comparison with ML and REML

The Best Linear Unbiased Predictor (BLUP) in mixed models is a function of the variance components and they are estimated using maximum likelihood (ML) or restricted ML methods. Nonconvergence of BLUP would occur due to a drawback of the standard likelihood-based approaches. In such situations, ML and REML either do not provide any BLUPs or all become equal. To overcome this drawback, we provide a generalized estimate (GE) of BLUP that does not suffer from the problem of negative or zero variance components, and compare its performance against the ML and REML estimates of BLUP. Simulated and published data are used to compare BLUP.