Getting into the ‘Giving Habit’: The Dynamics of Volunteering in the UK

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - Scholarship on volunteering has paid insufficient attention to how experiences of volunteering in the past affect current...     

The Population Education Transition Curve: Education Gradients Across Population Exposure to New Health Risks

The salutary effect of formal education on health-risk behaviors and mortality is extensively documented: ceteris paribus, greater educational attainment leads to healthier lives and longevity. Even though the epidemiological evidence has strongly indicated formal education as a leading “social vaccine,” there is intermittent reporting of counter-education gradients for health-risk behavior and associated outcomes for certain populations during specific periods. How can education have both beneficial and harmful effects on health, and under which contexts do particular effects emerge? It is useful to conceptualize the influence of education as a process sensitive to the nature, timing of entry, and uniqueness of a new pleasurable and desirable lifestyle and/or product (such as smoking) with initially unclear health risks for populations. Developed herein is a hypothesis that the education gradient comprises multiple potent pathways (material, psychological, cognitive) by which health-risk behaviors are influenced, and that there can be circumstances under which pathways act in opposite directions or are differentially suppressed and enhanced. We propose the population education transition (PET) curve as a unifying functional form to predict shifting education gradients across the onset and course of a population’s exposure to new health risks and their associated consequences. Then, we estimate PET curves for cases with prior epidemiological evidence of heterogeneous education gradients with health-risk behaviors related to mass-produced cigarettes in China and the United States; saturated fats, sugar, and processed food diets in Latin America; and HIV infection in sub-Saharan Africa. Each offers speculation on interactions between environmental factors during population exposure and education pathways to health-risk behaviors that could be responsible for the temporal dynamics of PET curves. Past epidemiological studies reporting either negative or positive education gradients may not represent contradictory findings as much as come from analyses unintentionally limited to just one part of the PET process. Last, the PET curve formulation offers richer nuances about educational pathways, macro-historical population dynamics, and the fundamental cause of disease paradigm.     

The selfie and the transformation of the public–private distinction

The selfie is a contemporary form of self-portraiture, representing a photographic image of the human face. The selfie is created for the purpose of reproduction and to communicate images visually with others from a distance. The proliferation of web 2.0 technologies and mobile smart phones enables users to generate and disseminate images at an unprecedented scale. Coupled with the increasing popularity of social media platforms, these technologies allow the selfie to be distributed to a wide audience in close to real time. Drawing upon Erving Goffman’s approach to the study of face-to-face social interaction, this article presents a discussion of the production and consumption of the selfie. We draw upon Goffman’s dramaturgical approach, to explore how the ‘presentation of self’ occurs in the context of a selfie. Next, we consider how the selfie as a form of visual communication holds critical implications for mediated life online as individuals go about doing privacy. We conclude by reflecting on the role of the selfie and its impact on the boundaries between public and private domains in contemporary social life.     

The impact of student loans on college access,completion, and returns

Nearly half of all first‐time undergraduates take a loan to pay for college, and many students will borrow tens of thousands of dollars by the time they leave. Low‐income students and students of color borrow student loans more often and in larger amounts, yet attend less selective institutions, are more likely to drop out with debt. Among students who complete college, those with larger amounts of debt may struggle to pay back their loans or to invest in a house, family, or future education. Researchers are just beginning to untangle how the availability and use of student loans affects college access, educational attainment, and life after college, yet this topic has important implications for economic inequality and social stratification. In this article, we summarize what is known and what remains to be investigated, about the impact of student loan availability and use on college enrollment, degree completion, and postcollege outcomes.     

Modelling the probability distribution of prize winnings in the UK National Lottery: consequences of conscious selection

Summary.  In the statistical and economics literature on lotteries, the problem of designing attractive games has been studied by using models in which sales are a function of the structure of prizes. Recently the prize structure has been proxied by using the moments of the prize distribution. Such modelling is a vital input into the process of designing appealing new lottery games that can generate large revenues for good causes. We show how conscious selection, the process by which lottery players choose numbers non-randomly, complicates the multivariate distribution of prize winners by introducing massive overdispersion of numbers of winners, and large correlations between the numbers of different types of prize winner. Although it is possible intuitively to reach a qualitative understanding of the data, an a priori model does not fit well. We therefore construct an empirical model of the joint distribution of prize winners and use it to calculate the moments of ticket value as a function of sales. The new model gives much higher estimates of ticket value moments, particularly skewness, than previously obtained. Our results will have consequences for policy decisions regarding game design. A spin-off result is that, on the basis of the results of model fitting, lottery players may increase the expected value of their ticket by strategically choosing numbers which are less popular with other lottery players.     

AN EXPERIMENTAL STUDY OF THE EFFECTIVENESS OF ROLLING SCHEDULES IN PRODUCTION PLANNING

An experimental study was designed to investigate the efficiency of decisions obtained from optimizing a finite, multiperiod model and implementing (structure is parallel with “optimizing” above) those decisions on a rolling basis. The results of the study suggest that rolling schedules are quite efficient and also that they point to some important design issues in model-building for production planning.     

Beyond the urban stream syndrome: organic matter budget for diagnostics and restoration of an impaired urban river

In response to water quality standard violations linked to excessive organic matter (OM) and a lack of sampling data informing the Total Maximum Daily Load (TMDL), an organic matter budget was created to quantify and identify sources of OM in the lower Jordan River (Salt Lake City, UT). By sampling dissolved, fine, and coarse particulate OM, as well as measuring ecosystem metabolism at seven different sites, the researchers aimed to identify the origin of excess OM, and understand pathways by which different size classes of the OM pool are generated. The dissolved fraction (DOM; 94 %) was found to be the dominant form of OM transported within the river with fine particulate organic matter (FPOM; 6 %) the second most abundant, and coarse particulate organic matter (CPOM; 1 %) transport relatively insignificant in the overall OM budget. Primary production exceeded respiratory losses in the upper river, and this, along with OM inputs from two tributaries (where water reclamation facilities discharge into the river) delivered excess OM to the impaired lower reaches. Increasing stream metabolism index (SMI) with distance downstream (>1 in the lower river) further demonstrated that transport of excessive organic matter into the lower river was from upstream sources and not due to lateral inputs. This simple approach to characterizing the organic matter budget as it relates to water quality in the Jordan River was effective and could serve as a model for future studies attempting to quantify and identify sources of OM in urban ecosystems.     

Teaching Mands to Older Adults with Dementia

The Analysis of Verbal Behavior - Millions of Americans are diagnosed with dementia, and that number is only expected to rise. The diagnosis of dementia comes with impairments, especially in...     

The Social Experiences of Children with Disability and the Influence of Environment: a framework for intervention

This paper explores the influence of environment on the quality of social experiences of children with disability in Sydney, Australia. The social experiences of four children with fragile X syndrome were described using ethnographic methods that included participant observation at 'special' and regular schools and in-depth interviews with parents, teachers and occupational therapists. An environmental perspective is presented here to complement existing individualist perspectives that address the social problems faced by children with disability. The environmental perspective involves (i) perceptions of disability, (ii) the child's family (relations, advocacy, encouragement, education, identity creation, dependence and separation), and (iii) the child's school (physical environment, other children, principal, teachers, therapists, policy and ethos). The paper serves as a basic framework to be adapted in further research and practice into the environmental influence of children's social experiences.     

Sleep disturbances and suicide—New battles for veterans of U.S. wars in Afghanistan and Iraq: A retrospective review

In this article, we systematically reviewed 116 veterans’ medical records to explore the mitigating factors in sleep disturbance, polytrauma clinical triad (PCT), and suicide. We discovered that a particular nonaction (i.e., no standardized completion of sleep-disturbance screenings) had strong implications for resulting suicides among veterans with reported sleep disturbances, PCT, and suicidal ideations. This study provides strong propositions for the further study of this veteran cohort—Operations Enduring Freedom (OEF), Iraqi Freedom (OIF), and New Dawn (OND)—with regard to the impact of sleep disturbance on PCT and its relationship with suicide symptoms, ideation, and completion. The purpose of this study was to examine the outcomes of sleep disturbances on complex relationships among the three primary diagnoses—posttraumatic stress disorder (PTSD), traumatic brain injury (TBI), and chronic pain—that establish the PCT cluster. We identified that those diagnosed with sleep disturbances had increased suicidal ideations and rates of completed suicides. We analyzed these factors in veterans returning from the current wars in Afghanistan and Iraq. We hypothesized that (a) clinicians were not completing sleep-disturbance screenings as a standard practice for the OEF/OIF/OND veterans diagnosed with PCT who reported sleep disturbance concerns within the U.S. Department of Veterans Affairs; (b) if no sleep-disturbance screening instruments were used by clinicians, veterans would be at a greater risk of suicide completion.