Consistency of the Subsample Bootstrap empirical process

In the classical Bootstrap approach the number of distinct observation in the resample is random. To overcome this hitch Rao et al. [Bootstrap by sequential resampling, J. Statist. Plan. Inference 64 (1997), pp. 257–281] have proposed a modified resampling procedure – the so-called Sequential Bootstrap or 0.632-Bootstrap – in which each resample has exactly the same number m ～eq ?0.632 n? of distinct observations. Motivated by this idea we introduce an akin procedure, the Subsample Bootstrap, where additionally even the size of each resample is equal. It will turn out that the Subsample Bootstrap empirical process is consistent for a wide class of Donsker classes.     

Wählen als Gruppenerfahrung?

Lazarsfeld et al. have formulated a voting model, which is based on the influences of group embedding. This essentially means that people adapt their voting behaviour according to their social embeddings. However, the individualisation thesis has recently claimed that group embeddings have become looser and more often contradictory. Can the empiric findings of Lazarsfeld therefore still be valid? This analysis, which is based on a panel study on the Styrian Local Elections 2000, sets out to test the applicability of this voting model. It can be shown clearly, that people are still more likely to vote for the parties, which are popular within their social surroundings. However, when put under cross pressures, people tend to change their party preferences, whereas relevant cross pressures are not only resulting from social embeddings, but also from the evaluation of politicians, issues and so on.     

European Mobilities or Poverty Migration? Discourses on Roma in Germany

This article discusses the discursive framing of displacement and legitimacy for Roma migrants living in Germany to explore distinctions between “economic” and “forced” migration. Despite efforts towards their inclusion at the EU level, there has been an escalation in anti‐Roma sentiment across Europe simultaneous with increased transnational mobility. Based on media analysis and ethnographic research spanning 2011 to 2013, the inconsistencies and ironies associated with distinctions between voluntary and forced migration – and the consequences of this distinction for experiences in a host country – are illustrated using three cases. These highlight the range of reactions to Roma as “poverty migrants” (with its a priori assumption about welfare needs) to “bogus” or illegitimate refugees, even when fleeing desperate circumstances. These framings, and the inconsistencies they inherently entail, highlight investment in European identity and citizenship as migrants are defined, categorized, and managed by states seeking to curtail population movements deemed problematic.     

Combining the t test and Wilcoxon's rank-sum test

In the two-sample location-shift problem, Student's t test or Wilcoxon's rank-sum test are commonly applied. The latter test can be more powerful for non-normal data. Here, we propose to combine the two tests within a maximum test. We show that the constructed maximum test controls the type I error rate and has good power characteristics for a variety of distributions; its power is close to that of the more powerful of the two tests. Thus, irrespective of the distribution, the maximum test stabilizes the power. To carry out the maximum test is a more powerful strategy than selecting one of the single tests. The proposed test is applied to data of a clinical trial.     

Social origin,field of study and graduates’ career progression: does social inequality vary across fields?

Research on stratification and mobility has consistently shown that in the UK there is a direct impact of social origin on occupational destination net of educational attainment even for degree‐holders. However, only a few studies applied a longitudinal and dynamic perspective on how intergenerational mobility shapes graduates’ working careers. Using multilevel growth curve modelling and data from the 1970 British cohort study (BCS70), we contribute to this research by looking at the emergence of social inequalities during the first ten years since labour market entry. We further distinguish between graduates of different fields of study as we expect social disparities to develop differently due to differences in initial occupational placement and upward mobility processes. We find that parental class does not affect occupational prestige over and above prior achievement. Separate analyses by the field of study show that initial differences in occupational prestige and career progression do not differ between graduates from different classes of origin in STEM fields, and arts and humanities. It is only in the social sciences that working‐class graduates start with lower occupational prestige but soon catch up with their peers from higher classes. Overall, our results indicate no direct effect of social origin on occupational attainment for degree‐holders once we broaden our focus to a dynamic life course perspective.     

Making financial uncertainty count: Unit-linked insurance,investment and the individualisation of financial risk in British life insurance

While most scholarship in the sociology of insurance has focused on the making of insurance risk by investigating mechanisms of pooling and spreading, this article examines insurers’ management of financial uncertainty. Based on a large corpus of written sources and 44 semi-structured oral history interviews, this article seeks to describe and explain a shift in how financial uncertainty is dealt with in British life insurance, away from traditional multipolar arrangements revolving around actuarial prudence and discretion, towards bipolar arrangements that rely on explicit risk quantification and the logic of risk-based capital to “individualise” financial risk. The article identifies two factors that were key in bringing about this shift: first, the competitive dynamics that unfolded with the emergence of challenger “unit-linked” insurers in the 1960s, and, second, changes in the professional ecology, as manifested by the changing relations between the actuarial profession and insurance supervisors.