Identifying Perceived Neighborhood Stressors Across Diverse Communities in New York City

There is growing interest in the role of psychosocial stress in health disparities. Identifying which social stressors are most important to community residents is critical for accurately incorporating stressor exposures into health research. Using a community‐academic partnered approach, we designed a multi‐community study across the five boroughs of New York City to characterize resident perceptions of key neighborhood stressors. We conducted 14 community focus groups; two to three in each borough, with one adolescent group and one Spanish‐speaking group per borough. We then used systematic content analysis and participant ranking data to describe prominent neighborhood stressors and identify dominant themes. Three inter‐related themes regarding the social and structural sources of stressful experiences were most commonly identified across neighborhoods: (1) physical disorder and perceived neglect, (2) harassment by police and perceived safety and (3) gentrification and racial discrimination. Our findings suggest that multiple sources of distress, including social, political, physical and economic factors, should be considered when investigating health effects of community stressor exposures and psychological distress. Community expertise is essential for comprehensively characterizing the range of neighborhood stressors that may be implicated in psychosocial exposure pathways.     

Boundaries of American Identity: Relations Between Ethnic Group Prototypicality and Policy Attitudes

We sought to document that the extent to which different ethnic groups are perceived as embodying the American identity is more strongly linked to antiminority policy attitudes and acculturation ideologies among majority‐group members (European Americans) than among minority‐group members (Asian Americans or Latino/as). Participants rated 13 attributes of the American identity as they pertain to different ethnic groups and reported their endorsement of policy attitudes and acculturation ideologies. We found a relative consensus across ethnic groups regarding defining components of the American identity. However, European Americans were perceived as more prototypical of this American identity than ethnic minorities, especially by European American raters. Moreover, for European Americans but not for ethnic minorities, relative ingroup prototypicality was related to antiminority policy attitudes and acculturation ideologies. These findings suggest that for European Americans, perceptions of ethnic group prototypicality fulfill an instrumental function linked to preserving their group interests and limiting the rights afforded to ethnic minorities.     

Perspectives of children and adolescents on the perceived determinants of physical activity during recess

Promotion of healthy lifestyles in youth focuses on school-based interventions with the aim to increase physical activity (PA) during school days. Drawing on seventeen focus group discussions from three purposively selected Estonian schools, we explored factors that perceivably affect students’ recess physical activity (RPA). Both inductive and deductive principles of data analysis were used to extract major and subthemes related to factors that inhibit or enhance RPA. Participants identified barriers and facilitators to recess PA as originating mainly from physical and organizational school environment. Also, unsuitable weather was described as a barrier to being active. Additionally, feelings, behavioral and normative beliefs were described as constraining or facilitating RPA. Results highlighted two culture-specific unique perceived determinants of RPA that need to be addressed during the development of school-based interventions to increase PA.     

Being transformed: Delivering a psychotherapeutic group intervention targeting repeat suicide attempts

Clients who make repeat suicide attempts have complex needs, are at high risk of completed suicide and pose a range of challenges for clinicians. Targeted interventions are required. Acceptability, the perceived appropriateness of an intervention, is associated with successful implementation, engagement and effectiveness of interventions. Despite the advantages of group interventions, there is limited research into the acceptability of groups with this population. Using Interpretative Phenomenological Analysis, this paper reports on facilitators’ experiences (n = 9) of the acceptability of a therapeutic group intervention (PISA – a Psychoeducational/psychosocial Intervention for persons who make recurrent Suicide Attempts). Analysis of focus group data revealed how involvement with the intervention profoundly influenced facilitators’ perceptions of and approach to their work with this client group. They embraced the model, developed a deeper appreciation of clients’ resources and became unburdened from sole responsibility for the clients, the therapeutic process and outcomes. PISA provided a model that helped facilitators to work in a focused, compassionate and creative manner as they addressed the central concern of these clients, their suicidal desire, with newly found confidence and eagerness. PISA was experienced as acceptable to facilitators as it was useful to them and deemed appropriate and beneficial to the target population.     

最简群体范式的操作、心理机制及新应用

最简群体范式作为研究群际关系的有效工具,受到社会心理学家广泛重视。除经典任务程序、随机分配程序外,新近发展出想象程序、记忆程序、自我卷入、计算机模拟群体互动模式等分类操作。最简群体范式具有随机性、完全匿名性和无关自我功利性等特点,可以从群体推断自我、自我推断群体及社会认同整合三个视角解释其心理机制。目前,最简群体范式在社会认知加工、社会心理偏好、社会互动行为及神经生理反应等领域开始广泛应用。     

Phase transformation of Cu precipitate in Fe–Cu alloy studied using self-guided molecular dynamics

The self-guided molecular dynamics (SGMD) method, which can enhance the conformational sampling efficiency in MD simulations, was applied in investigating the phase transformation of Cu precipitate in α-iron that took place during thermal aging. It was shown that the SGMD method can accelerate calculating the bcc to 9R structure transformation of a small precipitate (even 4.0 nm in size), enabling the transformation without introducing any excess vacancies. The size dependence of the transformation also agreed with that seen in previous experimental studies.     

(Re)assembling Natures,Cultures, and (Nano)technologies in Public Engagement

Abstract

Practices of ordering are powerful means of giving structure to people's lives and providing a sense of control. The analysis of three episodes from discussion groups on nanotechnology in Austria shows that citizens evaluate new technologies with regard to how they intersect with, support, or disturb existing orders. The concept of discursive assemblages serves as a lens for recognising the non-fixed character of the discursive process, while still allowing the analyst to identify how specific elements, such as conceptions of nature, culture, and technology, are (re)assembled at particular moments. Each of the three episodes represents a specific way of creating and negotiating assemblages: the first case demonstrates how discussants collectively discuss a nature–technology hybrid (nano-bamboo socks) against the backdrop of a highly valued ideal of keeping ‘the natural’ and ‘the technological’ separate; the second episode exemplifies a clash of two assemblages as participants argued for or against the application of nanotechnology in food products; and the third example illustrates the process of collective experimentation with different assemblages to make sense of a highly futuristic nanochip for brain enhancement. Together the episodes demonstrate that participants in public engagement settings do not address nanotechnology as a simple question of choice between acceptance and rejection but rather engage in processes of care regarding how a society might develop when technological innovations such as nanotechnology threaten to blur existing boundaries and orders, such as the distinction between nature and culture.     

Molecular dynamics study of high-pressure polymorphs of BaCO3

We report a computational study of BaCO₃ at high pressure using molecular dynamics simulation based on a recent potential model. The first phase transition from the witherite to the post-aragonite phase is observed at 9.67 GPa with a resistance to shear along the [0 0 1] direction and a high compressibility in a direction perpendicular to the layers. This stable phase is also found through the variation of the bulk modulus, the shear moduli, and the compressional and shear wave velocities with pressure. A softening mode is noticed at a pressure around 10 GPa. The computed X-ray diffraction pattern of the post-aragonite phase at 16 GPa shows favorable agreement with the available experimental data.