Divergence in Age Patterns of Mortality Change Drives International Divergence in Lifespan Inequality

In the past six decades, lifespan inequality has varied greatly within and among countries even while life expectancy has continued to increase. How and why does mortality change generate this diversity? We derive a precise link between changes in age-specific mortality and lifespan inequality, measured as the variance of age at death. Key to this relationship is a young–old threshold age, below and above which mortality decline respectively decreases and increases lifespan inequality. First, we show for Sweden that shifts in the threshold’s location have modified the correlation between changes in life expectancy and lifespan inequality over the last two centuries. Second, we analyze the post–World War II (WWII) trajectories of lifespan inequality in a set of developed countries—Japan, Canada, and the United States—where thresholds centered on retirement age. Our method reveals how divergence in the age pattern of mortality change drives international divergence in lifespan inequality. Most strikingly, early in the 1980s, mortality increases in young U.S. males led to a continuation of high lifespan inequality in the United States; in Canada, however, the decline of inequality continued. In general, our wider international comparisons show that mortality change varied most at young working ages after WWII, particularly for males. We conclude that if mortality continues to stagnate at young ages yet declines steadily at old ages, increases in lifespan inequality will become a common feature of future demographic change.     

Doing it differently: emancipatory autism studies within a neurodiverse academic space

Abstract

In the current research climate, in which many autistic and autism communities are increasingly calling for a move towards collaborative forms of research, we consider how a loosely formed epistemological community may serve to challenge ‘business as usual’ in the academy. Mindful of the need to move beyond theory, we use this experience to concretely consider how knowledge about autism and neurotypicality can be meaningfully (co)-produced, and made available both to the research community and also to autistic and autism communities. Here, we use our own co-production of this article to explore how autistic experience may trouble normative meanings of academic knowledge production. We also consider the limits and possibilities of a neurodiverse research collaboration to reflect on ways in which a loose epistemological space may serve to contribute to knowledge about both autism and neurotypicality, adding to debate around collaborative research.     

Selecting Indicators for Assessing Community Sustainable Resilience

Communities are complex systems subject to a variety of hazards that can result in significant disruption to critical functions. Community resilience assessment is rapidly gaining popularity as a means to help communities better prepare for, respond to, and recover from disruption. Sustainable resilience, a recently developed concept, requires communities to assess system‐wide capability to maintain desired performance levels while simultaneously evaluating impacts to resilience due to changes in hazards and vulnerability over extended periods of time. To enable assessment of community sustainable resilience, we review current literature, consolidate available indicators and metrics, and develop a classification scheme and organizational structure to aid in identification, selection, and application of indicators within a dynamic assessment framework. A nonduplicative set of community sustainable resilience indicators and metrics is provided that can be tailored to a community's needs, thereby enhancing the ability to operationalize the assessment process.     

Impairments and perceived competence in persons living with HIV/AIDS

Medical advances have transformed HIV/AIDS from a short-term terminal illness to a long-term chronic condition. Consequently, the disability experience of persons with HIV illness has shifted from issues related to physical well-being to those concerning performance of daily life activities and wider community participation. These changes have necessitated rehabilitation interventions for persons with HIV/AIDS to focus on issues related to enabling participation in all spheres of everyday activities. However, limited information is available on the impairments prevalent in the emergent population of people living with HIV/AIDS and on the impact of these impairments on the person's functional performance and participation in various occupations of daily living. The present study attempted to explore these issues as they are experienced by the emergent population of people living with HIV/AIDS. The purpose of the study was: (1) to explore occupational functioning across various activities, (2) to describe the various impairments prevalent in this population, and (3) to examine the impact of these impairments on the person's perceived occupational competence. Two instruments, the Sign and symptom checklist for persons with HIV disease and the Occupational Self-Assessment were administered to a sample of 35 individuals (Mean age=42.8 yrs.) living in supportive living facilities. Impairments most commonly identified by the participants included: fatigue; fear/worries; difficulty concentrating; muscle aches; and depression. The two primary areas of occupational functioning where participants reported experiencing moderate to severe difficulty included: managing finances and physically engaging in activities which were reported by 67.7% and 35.5% of the participants respectively. No statistically significant correlation was observed between various measures of impairments and the overall measure of perceived occupational competence for the sample of individuals living with HIV/AIDS included in this study.     

Social Learning and Innovation at Retail Farmers' Markets*

Abstract Retail farmers' markets are seen as key institutions in a more “civic agriculture,” but little is known about how they promote small business entrepreneurship. Drawing on research in economic sociology and economic geography, this paper examines the role of social learning in vendor innovation. Data from a 1999 mail survey of farmers' market vendors in California, New York and Iowa show that business innovation, as represented by intensity of vendors' innovative marketing practices and vendors' successful enterprise expansion, was modest. Social learning through engagement with customers contributed to more innovative marketing by vendors, while social learning through engagement with customers and fellow vendors increased the likelihood of vendors diversifying to additional markets beyond the farmers' market. Certain individual and enterprise characteristics also influenced vendor innovation. This suggests that, although important, the beneficial effects of social learning for vendors at farmers' markets remain moderated by human capital and structural factors.     

The physical impact of computers and electronic game use on children and adolescents,a review of current literature

Children using computers and electronic games may adopt the kinds of sustained and awkward postures that are associated with musculoskeletal disorders in working adults. If they do, the physical demands of extensive use could lead to a wide range of adverse effects on developing children, including visual, neurological and physical changes. This article reviews the literature related to media use, ergonomics, epidemiology and pediatrics that address the physical impact of computer use by children. The literature establishes that computer use is common, but does not demonstrate a causal or statistical association with any physical disorders. Laboratory studies on vision, case reports of game-related tendonitis and ergonomic analyses of classroom computers suggest that concern is warranted.     

Shelves and Bins: Varieties of Qualitative Sociology in Rural Studies*

It did not take us long to discover that the “field” of qualitative research is far from a unified set of principles promulgated by networked groups of scholars. In fact, we have discovered that the field of qualitative research is defined primarily by a series of essential tensions, contradictions, and hesitations. These tensions work back and forth among competing definitions and conceptions of the field. Further, these tensions exist in a less‐than‐unified arena. We discovered that the issues and concerns of qualitative researchers in nursing are decidedly different from those of researchers in cultural anthropology. Symbolic interactionist sociologists deal with questions that are different from those of interest to critical theorists in educational research. Nor do the disciplinary networks of qualitative researchers necessarily cross each other, speak to each other, or read each other. (Denzin and Lincoln 1994:ix It is an interesting time to be leaning over the fences of American farms. There are discussions, even arguments, in the land about whether farmers ought to change the way they farm …There have been arguments like this heard before …[T]he basic question about farming splits into many smaller ones. The answers multiply and become contradictory. Hence this effort to sort the questions onto different shelves, the answers into different bins …There is only one new idea developed here: there are really no new ideas in arguments about agriculture. (Wojcik 1989:ix, x, xii)     

A time series of urban forestry in Los Angeles

There has been an increasing interest in the evolution of urban forests. This research uses historic and digital aerial photography to quantify changes in tree density in Los Angeles, California since the 1920’s. High-resolution geographic information system analysis (4 to 6 time periods) of three regions (San Fernando Valley, Hollywood, Los Angeles Basin) of Los Angeles reveals that there has not always been an increase in tree density with time. Tree densities on public and private land were highest in the 1940’s in Hollywood, while the San Fernando Valley and Los Angeles Basin experienced a near linear increase in tree density on both private and public land since the 1920’s. When historic tree density reconstructions were examined for the 15 Los Angeles city council districts from the 1920’s, 1950’s and 2006, most districts in Los Angeles have experienced a significant increase in tree density, however, there has been wide variation in tree densities among city council districts. Trees densities have generally been higher on private land since the 1920’s and currently tree densities on private land are significantly higher than on public land. Results suggest the evolution of urban forests in Los Angeles mirrors the dynamics of urban forests in desert and grassland cities. It is possible to reconstruct the development of urban forests in sections of cities using historic and contemporary aerial photography. We estimated that Los Angeles averages approximately 104 trees per hectare (82 private land, 22 public land) based on 2006 imagery at 0.3 m resolution, however, field validation suggests that we identified only 73% of trees. Although there is still space to plant trees on public land, private land owners will need to be heavily involved in order to achieve the goals of Los Angeles’ Million Tree Initiative.     

Multiple Measures of Fixation on Social Content in Infancy: Evidence for a Single Social Cognitive Construct?

The preference of infants to fixate on social information in a stimulus is well known. We examine how this preference manifests across a series of free‐viewing tasks using different stimulus types. Participants were thirty typically developing infants. We measured eye movements when viewing isolated faces, faces alongside objects in a grid, and faces naturally presented in photographed scenes. In each task, infants fixated social content for longer than nonsocial content. Social preference scores representing distribution of fixation to social versus general image content were highly correlated and thus combined into a single composite measure, which was independent of demographic and behavioral measures. We infer that multiple eye‐tracking tasks can be used to generate a composite measure of social preference in infancy. This approach may prove useful in the early characterization of developmental disabilities.