Social externalities,overlap and the poverty trap

Previous studies find that some social groups are stuck in poverty traps because of network effects. However, these studies do not carefully analyze how these groups overcome low human capital investment activities. Unlike previous studies, the model in this paper includes network externalities in both the human capital investment stage and the subsequent career stages. This implies that not only the current network quality, but also the expectations about future network quality affect the current investment decision. Consequently, the coordinated expectation among the group members can play a crucial role in the determination of the final state. We define “overlap” for some initial skill ranges, whereby the economic performance of a group can be improved simply by increasing expectations of a brighter future. We also define “poverty trap” for some ranges, wherein a disadvantaged group is constrained by its history, and we explore the egalitarian policies to mobilize the group out of the trap.     

The Relationship Between Nonsuicidal Self‐Injury and Family Functioning: Adolescent and Parent Perspectives

We explored parent and adolescent reports of family functioning, how this differed if the parent was aware that their child self‐injured, and how parental awareness of self‐injury was related to self‐injury frequency, self‐injury severity, and help seeking. Participants were 117 parent–adolescent dyads, in 23 of which the adolescent self‐injured. Adolescents who self‐injured reported poorer family functioning than their parents, but parents who did not know about their child's self‐injury reported similar functioning to parents whose children did not self‐injure. Parents were more likely to know that their child self‐injured when the behavior was severe and frequent. Help‐seeking was more likely when parents knew about self‐injury. Family‐based interventions which emphasize perspective‐taking could be used to effectively treat self‐injury.     

Integrative Family Therapy With Childhood Chronic Illness: An Ethics of Practice

A challenge for contemporary family therapists is negotiating differences between modern and postmodern frameworks in the practice context. Modernists espouse a systemic metaphor; use evidence‐based and interventive approaches, including strategic, structural‐ or solution‐focused techniques, and believe in the therapist's knowledge, expertise and power to influence individuals or families to change. On the other hand, postmodernists follow a social constructionist, dialogical or narrative paradigm, which identifies the main ingredient of therapy as language, conversation, understanding and the therapist's ‘not knowing’ stance in eliciting a person's expertise and story Yet many practitioners adopt a middle way between these paradigm polarities, one that is less theory‐driven and more pragmatic, flexible, integrative and practice‐based. This is consistent with evidence‐based practice and research demonstrating common factors across all therapies. The value of preserving systemic thinking in family therapy is recognised while reaching forward to a postmodern social constructionist and dialogical approach. The article describes this integrative stance in family therapy as paramodern based on an ethics of practice. This is illustrated by a detailed case study of integrative family therapy, which addresses anxiety, anger and sleeping issues associated with a chronic childhood illness called Perthe's disease.     

The residential segregation of occupational groups in central cities and suburbs

The impression of journalists and social critics in the 1950’s that post-war suburbia was uniformly middle-class has been generally rejected by social scientists, but there is a persisting belief in a high degree of residential segregation by social level in suburbia and in a high degree of socio-economic homogeneity within suburban neighborhoods. A comparison of eight central cities with their suburban zones in 1950 and in 1960 revealed, for both dates, (a) small differences in occupational distributions between the central cities and the suburban zones and (b) generally higher Index of Residential Dissimilarity values for pairs of occupational groups in the central cities. These findings indicate that suburban neighborhoods, at least in the eight suburban zones studied, were little, if any, more occupationally homogeneous than the central city neighborhoods. This suggests that the belief in homogeneous suburban neighborhoods should be added to the growing list of discredited “myths of suburbia. ”     

An Empirical Approach to Sufficient Similarity: Combining Exposure Data and Mixtures Toxicology Data

When assessing risks posed by environmental chemical mixtures, whole mixture approaches are preferred to component approaches. When toxicological data on whole mixtures as they occur in the environment are not available, Environmental Protection Agency guidance states that toxicity data from a mixture considered “sufficiently similar” to the environmental mixture can serve as a surrogate. We propose a novel method to examine whether mixtures are sufficiently similar, when exposure data and mixture toxicity study data from at least one representative mixture are available. We define sufficient similarity using equivalence testing methodology comparing the distance between benchmark dose estimates for mixtures in both data‐rich and data‐poor cases. We construct a “similar mixtures risk indicator”(SMRI) (analogous to the hazard index) on sufficiently similar mixtures linking exposure data with mixtures toxicology data. The methods are illustrated using pyrethroid mixtures occurrence data collected in child care centers (CCC) and dose‐response data examining acute neurobehavioral effects of pyrethroid mixtures in rats. Our method shows that the mixtures from 90% of the CCCs were sufficiently similar to the dose‐response study mixture. Using exposure estimates for a hypothetical child, the 95th percentile of the (weighted) SMRI for these sufficiently similar mixtures was 0.20 (i.e., where SMRI <1, less concern; >1, more concern).     

The Challenges in Developing an Online Applied Statistics Program: Lessons Learned at Penn State University

Numerous professional fields have an increasing need for individuals trained in statistics and other quantitative analysis techniques. Today there exists great potential to fulfill this need by providing opportunities through online learning. However, to provide a high-quality education for returning adult professionals seeking advanced degrees in applied statistics online, many challenges need to be overcome. Based on our experience developing Penn State University’s online program in applied statistics, we discuss the evolution of the program’s curriculum, recruitment and development of online faculty, and meeting the requirements of students as important areas that require consideration in the development of an online program. We also highlight program evaluation strategies employed to ensure innovation and improvement in online education as cornerstones to a program’s success.     

‘Your whole life depends on it’: academic stress and high-stakes testing in Ireland

International research consistently shows that high-stakes exams are a significant source of stress and worry for students within secondary education. Existing research focuses on individual variation in exam-related stress levels among students with very little attention given to the influence of school context on student stress. Using data from the Irish Post-Primary Longitudinal Study, a mixed methods study of secondary students, this paper examines both individual and school level factors influencing the levels of stress among students preparing for the nationally standardised Leaving Certificate examination. The paper presents new findings which highlight the potential role of schools in ameliorating student stress. Findings show that student stress is not only influenced by individual-level factors but that certain aspects of the schooling process impact on stress levels. In particular, the quality of student–teacher interaction and peer relations within the school are found to have a significant impact on student stress levels. Students with more positive interactions with their teachers have lower stress levels with higher stress levels among those who have experienced bullying from peers. Stress is also influenced by programme choice at upper secondary level and the extent to which students are facilitated in their choice of subjects.     

The challenges of poverty and social welfare in the Caribbean

Poverty and related social problems have presented a long-standing challenge to policy makers and development planners throughout the Caribbean. This article is a social primer on anti-poverty strategies and welfare programmes established in Caribbean countries. It presents a comprehensive overview of poverty and attendant problems, discusses the social welfare approach and poverty reduction strategies, and outlines practical proposals for pursuing social development.     

Nondestructive creation: Entrepreneurship and management research in the study of growth

Economists’ focus on institutions in explaining economic growth, while important, can obscure the significant role played by individual entrepreneurs and the process of entrepreneurship. The prevailing view of entrepreneurship in economics (which continues to shape prevailing public policies) centers on Schumpeter's famous concept of “creative destruction.” In the context of sustained high levels of economic growth, as in the recent American experience, I focus on a different feature of entrepreneurship—“nondestructive creation,” in which the uncoordinated contest of ideas and search for new applications of existing ideas generate growth. And this nondestructive creation should be analyzed and can be fostered.