Inequality/difference in education: is a real explanation of primary and secondary effects possible?

The persistence of social disparities in educational achievement in contemporary societies is a matter of concern to social theory. Sociology of education has distinguished between the primary and secondary effects of socialization in order to construct explanatory theories of inequality of educational opportunity. Empirical evidence from the recent OECD PISA research is analysed to suggest that causes of the primary effect are the most important. The case is made with close reference to Goldthorpe's attempt to provide a rational action model of social disparities in education. An approach informed by scientific realism is held to offer a more adequate explanation.     

The use of economic appraisal in transportation analysis

This paper surveys the use of economic appraisal techniques in the field of transportation. After surveying the history of such approaches, a critical assessment is offered of the most recent contributions to the debate, centering on the 1977 Leitch Report. The limited room for manoeuvre in making local assessments is highlighted: national policy considerations are seen as frequently dominating the local choice. While most of the debate on the ‘inadequacies’ of cost-benefit have focussed on ‘intangible’ items, the author argues for a much closer look at the ‘hard’ data on the value of time-savings and accident costs. Some of the Leitch committee's proposals are found wanting in this respect. In the wider context, a plea is made for the use of common criteria for assessing projects throughout the entire transport sector. Only in this way can misallocation of resources be minimised.     

Differences in university students’ motivation between a required and an elective physical activity education policy

Objective: The aim of this study was to examine differences in students’ physical activity motivation, competence, and weekly exercise metabolic equivalent units (METs) between universities with different physical activity education (PAE) policy arrangements (ie, a required PAE vs. an elective PAE). Participants: Participants (N?=?953) were purposefully recruited from two universities with different PAE policies 1 week before the start of fall term 2015. Methods: Participants completed questionnaires assessing their physical activity motivation, competence, and weekly exercise METs. Results: The results of this study suggest that having a required PAE policy allows for more students with lower self-determined forms of motivation (ie, amotivation) to be reached in comparison to the elective PAE policy. Conclusions: This finding highlights that a primary value of having a required PAE policy is its ability to reach less motivated students.     

The travail of Delaware slave families in the early republic

Largely ignored in histories of the American slave trade, Delaware provides a unique case study of a state that attempted to carve out its identity as the notions of a free North and a slaveholding South emerged in early America. Delaware’s small slaveholdings and relatively small geographic area created unique challenges for its enslaved population. Aided by Quaker and Methodist abolitionists, slaves fought against kidnappers, slave sales, and distance to build and maintain families. Using heretofore unexamined tax records, the travail of enslaved families in Delaware at the close of the eighteenth century is analyzed in great detail.     

Technology‐Based Communication and the Development of Interpersonal Competencies Within Adolescent Romantic Relationships: A Preliminary Investigation

This study investigated longitudinal associations between adolescents’ technology‐based communication and the development of interpersonal competencies within romantic relationships. A school‐based sample of 487 adolescents (58% girls; M_age = 14.1) participated at two time points, one year apart. Participants reported (1) proportions of daily communication with romantic partners via traditional modes (in person, on the phone) versus technological modes (text messaging, social networking sites) and (2) competence in the romantic relationship skill domains of negative assertion and conflict management. Results of cross‐lagged panel models indicated that adolescents who engaged in greater proportions of technology‐based communication with romantic partners reported lower levels of interpersonal competencies one year later, but not vice versa; associations were particularly strong for boys.     

Developmental Differences in Infants' Attention to Social and Nonsocial Threats

Research has demonstrated that humans detect threatening stimuli more rapidly than nonthreatening stimuli. Although the literature presumes that biases for threat should be normative, present early in development, evident across multiple forms of threat, and stable across individuals, developmental work in this area is limited. Here, we examine the developmental differences in infants' (4‐ to 24‐month‐olds) attention to social (angry faces) and nonsocial (snakes) threats using a new age‐appropriate dot‐probe task. In Experiment 1, infants' first fixations were more often to snakes than to frogs, and they were faster to fixate probes that appeared in place of snakes vs. frogs. There were no significant age differences, suggesting that a perceptual bias for snakes is present early in life and stable across infancy. In Experiment 2, infants fixated probes more quickly after viewing any trials that contained an angry face compared to trials that contained a happy face. Further, there were age‐related changes in infants' responses to face stimuli, with a general increase in looking time to faces before the probe and an increase in latency to fixate the probe after seeing angry faces. Together, this work suggests that different developmental mechanisms may be responsible for attentional biases for social vs. nonsocial threats.     

Brain death during pregnancy and prolonged corporeal support of the body: A critical discussion

Aim

To discuss corporeal support of the brain-dead pregnant woman and to critically examine important aspects of this complex situation that remain as yet unexplored.

Outcomes of a revised apprentice carpenter fall prevention training curriculum

Falls from heights are a leading cause of morbidity and mortality among construction workers, especially inexperienced workers and those performing residential construction. This research reports changes in fall prevention behaviors following revision of fall prevention training in a union-based carpenters' apprenticeship program. We used a comprehensive needs assessment to identify gaps in apprentice carpenters' preparation to work at heights, used these results to guide a school-based fall prevention curriculum to fill these gaps, and measured the effects of the revised curriculum on knowledge, beliefs, and fall prevention behaviors.     

The Impact of Family Structure on Utilization of Preventive Care Services among Children under National Health Insurance in Taiwan

This study investigates the role of family structure in children’s access to preventive services in the context of a National Health Insurance (NHI) system. We analyzed the 2005 National Health Interview Survey in Taiwan to evaluate the impact of family structure on the utilization of preventive services, including well-child visits and non-free vaccinations. The extended family and single-father family were found to have a significant impact on care use in the unadjusted model even under NHI. However, after controlling for various health, demographic and socio-economic factors, our findings suggest that family structure does not influence the non-free use of vaccines, and financial constraints, instead, play an important role in making parents decide to have non-free vaccines. To further enhance the health and welfare of the children, our findings suggest that the NHI coverage of children’s vaccines might not be adequate and that non-free vaccines should be provided free to those families who cannot afford them.     

Model-robust supersaturated and partially supersaturated designs

Supersaturated designs are an increasingly popular tool for screening factors in the presence of effect sparsity. The advantage of this class of designs over resolution III factorial designs or Plackett–Burman designs is that n, the number of runs, can be substantially smaller than the number of factors, m. A limitation associated with most supersaturated designs produced thus far is that the capability of these designs for estimating g active effects has not been discussed. In addition to exploring this capability, we develop a new class of model-robust supersaturated designs that, for a given n and m, maximizes the number g   of active effects that can be estimated simultaneously. The capabilities of model-robust supersaturated designs for model discrimination are assessed using a model-discrimination criterion, the subspace angle. Finally, we introduce the class of partially supersaturated designs, intended for use when we require a specific subset of _m1$m_1$ core factors to be estimable, and the sparsity of effects principle applies to the remaining (m-_m1$m-m_1$) factors.