Curved Exponential Family Models for Social Networks

Curved exponential family models are a useful generalization of exponential random graph models (ERGMs). In particular, models involving the alternating k-star, alternating k-triangle, and alternating k-twopath statistics of Snijders et al (2006) may be viewed as curved exponential family models. This article unifies recent material in the literature regarding curved exponential family models for networks in general and models involving these alternating statistics in particular. It also discusses the intuition behind rewriting the three alternating statistics in terms of the degree distribution and the recently introduced shared partner distributions. This intuition suggests a redefinition of the alternating k-star statistic. Finally, this article demonstrates the use of the statnet package in R for fitting models of this sort, comparing new results on an oft-studied network dataset with results found in the literature.     

Opportunities and Impediments for Risk-Based Standards: Some Views from a Workshop

Techniques for performing scientific risk assessments for a wide variety of chemical and radiological hazards present in the environment and workplace are available. Speakers at a workshop sponsored by the Environmental and Public/Occupational Health Standard's Steering Group addressed both the state-of-the-art in risk assessment and areas of difficulty that require further research. The Steering Group concluded that within the limits of the available data, risk-assessment techniques are a useful tool in decision-making. In the past, many government agencies have not been effective either in listening to public concerns or in communicating technical or scientific information about risks. This has been true at all levels of government. Workshop speakers discussed some ways that government agencies can more effectively communicate with the public. The Steering Group concluded that major efforts must be made to ensure that two-way communication takes place. Thus the results of the workshop show that effective management of risk requires both a scientific assessment of risk and a responsive consideration of the public's perception of risk. Intensive efforts must be made to ensure that effective two-way communication takes place between members of the public and the appropriate government agencies.     

Enhancing engagement between the population,environment, and climate research communities: the shared socio-economic pathway process

Demographers have much to contribute to climate change science. This paper describes a new framework being developed by the climate research community that holds potential as an organizing tool for population–climate scholarship, as well as being useful for identifying demographic research gaps within the climate change field. The shared socio-economic pathways (SSPs) represent plausible alternative trends in the evolution of social and natural systems over the twenty-first century at the scale of the world and large regions. The SSPs can help identify population–environment research gaps by illuminating areas of intersection that will shape climate futures but require deeper scientific understanding—the association between urbanization and energy consumption is an example. Also, to vastly enhance the policy relevance of local case studies, the parameters outlined within the SSPs can offer a basic level of harmonization to facilitate generalization. In this way, the SSP framework can increase the relevance and accessibility of population research and, therefore, offer a mechanism through which demographic science can truly offer policy impact.     

Cross‐National Gender Variation in Environmental Behaviors*

Objective. This article presents a cross‐national examination of gender variations in environmental behaviors. Research on environmental concern reveals modest distinctions between men and women, with women typically displaying higher levels of environmental concern and behavioral adjustments relative to men. Additionally, some prior research suggests that women appear more engaged in household‐oriented (private) pro‐environment behaviors (e.g., recycling), and men in community/society‐oriented (public) pro‐environment behaviors (e.g., protests). The analysis provided here offers an important extension to existing research through its cross‐cultural, comparative perspective. Method. We make use of the 1993 International Social Survey to explore gender differences in “private” and “public” environmentally‐oriented behaviors across 22 nations. Results. It is shown that women tend to engage in more environmental behaviors than men in many nations, particularly private behaviors. In addition, both women and men tend to engage in relatively more private environmental behaviors as opposed to public ones. Conclusion. The cross‐national analysis provides support for gender distinctions with regard to some environmental behaviors within most of the incorporated 22 national contexts. Gender differences in level of private environmental behaviors tend to be more consistent within nations at the upper end of the wealth distribution.     

Typologies of Childhood Exposure to Violence: Associations With College Student Mental Health

Abstract

Objective: This study examined typologies of childhood violence exposure (CVE) and the associations of profiles with current demographic characteristics and mental health in emerging adulthood. Participants: The study evaluated a sample of college students from 2 US geographic regions (Midwest, n = 195; Southeast, n = 200). Methods: An online questionnaire (collected 2013–2014) assessed CVE and current mental health. Latent class analysis was used to identify typologies of CVE. Follow-up analyses were conducted to distinguish differences between typologies in demographic characteristics and mental health. Results: Four distinct profiles emerged: High-Exposed, Domestic-Exposed, Community-Exposed, and Low-Exposed. High- and Domestic-Exposed groups were more likely to be first-generation college students and to experience symptoms of psychopathology. Conclusions: This study offers a unique presentation of CVE profiles and a nuanced interpretation of their differential relationship to current demographic characteristics and mental health. It may befit university mental health initiatives to engage first-generation students and utilize comprehensive assessments of previous victimization.     

Klebsiella pneumonia liver abscess syndrome: Case presentation to a college student health clinic

ABSTRACT

The authors describe a case of Klebsiella pneumoniae liver abscess (KPLA) in a student presenting to a university student health center. The authors also provide a review of KPLA and invasive Klebsiella pneumoniae liver abscess syndrome (IKPLAS), including epidemiology, common clinical manifestations, standard diagnostic work-up, management options, and potential complications.     

The Personhood in Dementia Questionnaire (PDQ): Establishing an association between beliefs about personhood and health providers' approaches to person-centred care

Purpose of the studyInterest in person-centred dementia care has flourished in the last two decades. Despite growing interest in the development and implementation of person-centred approaches to dementia care, important empirical questions remain. For instance, although Kitwood (1997) emphasized that personhood, a status extended by others, is at the heart of person-centred care, to our knowledge, no one has demonstrated empirically that beliefs about patient status influence how care is provided. The purpose of this series of three studies was to operationalize Kitwood's definition of personhood in order to test this hypothesis.Design and methodsTo operationalize Kitwood's definition of personhood, we generated items to create the Personhood in Dementia Questionnaire (PDQ; Study 1). We then completed preliminary tests of the PDQ's convergent and discriminant validity (Study 2). Finally, we examined the PDQ's relationships with other constructs such as burnout and job satisfaction, and we used linear regression to test the hypothesis that health providers' beliefs about personhood influence intended approaches to dementia care (Study 3).ResultsIn Study 1, we generated a pool of 64 potential questionnaire items. In Study 2, a 20-item version of the PDQ demonstrated good internal consistency, resistance to socially desirable responding, and evidence of convergent and discriminant validity. In Study 3, PDQ scores accounted for a significant proportion of variance in health providers' intended approaches to dementia care, including pain management. PDQ scores were not related to job satisfaction or to most aspects of burnout.ImplicationsThese results provide the first direct empirical evidence of Kitwood's (1997) theory that beliefs about patient personhood have the potential to influence health providers' care decisions, including decisions about pain management.     

Exploring Group Dynamics in Activity-Based Group Work with Young People Experiencing Homelessness

This article explores the development of group dynamics in an activity-based group comprising four young people experiencing homelessness and one group facilitator. Over the course of 12 sessions, the group produced a coconstructed audio documentary. Nine group sessions were recorded, transcribed, coded, and analyzed for patterns of group dynamics, including communication and interaction patterns, cohesion, social integration and influence, and culture. Findings suggest that the task-oriented nature of coproducing the audio documentary facilitated the development of interpersonal dynamics, provided young people with opportunities for personal growth, and provided them with opportunities to engage their strengths as well.