ON THE ROBUSTNESS OF MAJORITY RULE

We show that simple majority rule satisfies five standard and attractive axioms—the Pareto property, anonymity, neutrality, independence of irrelevant alternatives, and (generic) decisiveness—over a larger class of preference domains than (essentially) any other voting rule. Hence, in this sense, it is the most robust voting rule. This characterization of majority rule provides an alternative to that of May (1952). (JEL: D71)     

Tribute to Jean-Yves Jaffray

Tribute to Jean-Yves Jaffray by the French Group of Decision Theory.     

图书当道！失业加剧，阅读成首选

全球性的经济寒冬袭来,一些人忙于寻找原因;一些人放纵自己,躲在自己编织的梦想天堂里;还有一些弄潮人则抓住时机,嗅出了商机。前不久的巴黎书展上,除美国图书销售出现小幅度缩水外,法德两国的图书销售都有所攀升。     

Short- and long-term stability in organizational networks: Temporal structures of project teams

Network research focuses on patterns of stable relationships, where stability represents the unfolding of social processes over long time frames. We argue that social interactions exhibit important regularities in different time frames (short and long term), reflecting distinct social processes. We illustrate the value of this distinction through a comparative case study of technology-mediated communication, within two project teams in a digital marketing agency. We examine how the embedding of interpersonal interactions in processes of reciprocity and closure over different time horizons enables the emergence of cohesion in the face of constant compositional changes. We propose that the time frames in which stable patterns of interactions develop are the key to understanding the nature of the underlying social processes with short-term patterns of closure and reciprocity representing adaptation to change while longer term patterns indicate cohesion. Our results are supportive of this argument and show that the two teams exhibit the same regularities in interactions but across different time horizons. We discuss the implication of our findings and argue that distinguishing between short- and long-term stability of social networks offers a novel and promising avenue for network research.     

Energy Drinks,Weight Loss,and Disordered Eating Behaviors

Abstract

Objective: The present study examined energy drink consumption and relations with weight loss attempts and behaviors, body image, and eating disorders. Participants/Methods: This is a secondary analysis using data from 856 undergraduate students who completed the American College Health Association–National College Health Assessment II confidentially online during February 2012. Results: This study revealed that the majority reported lifetime consumption of energy drinks (68.4%) and a substantial minority (30.2%) reported past-30-day consumption. Chi-square and t test results suggest that consumption is associated with concerns about personal appearance, weight loss attempts, and disordered eating behaviors (eg, vomiting). Hierarchical logistic regressions revealed that after controlling for demographics, the relations between energy drink consumption and the act of trying to lose weight, the use of diet pills, and the use of vomiting/laxatives remained significant. Conclusions: The current findings suggest that energy drink consumption is associated with weight loss attempts, poor body image, and unhealthy weight loss behaviors. Future research should examine the prevalence of energy drink consumption for the purpose of weight loss.     

Local Motions: Surfing and the Politics of Wave Sliding

Tapping into the politics and rhythms of surfing, this paper embodies a “set” of waves that seeks to erode the sedimentation of Hawaii's modern political orders. By foregrounding a more fluvial and dynamic sense of the political, this paper treats surfing not only as a heterotopic site of agency, but also as an opening for an “other” kind of politics.     

“No strings attached”: A qualitative exploration of gay and bisexual men’s motivations for and attitudes toward engaging in casual sex while on vacation

Prior quantitative research with gay and bisexual men (GBM) has documented high rates of sexual risk behavior during recreational travel. Although some associations are known (e.g., substance use at the tourist destination is associated with sexual risk), less is known about GBM’s motivations for travel and the cognitive and attitudinal factors that influence their sexual behavior while vacationing. In the present study, we conducted qualitative interviews with 46 GBM recruited from three popular gay tourist destinations. Using the Health Belief Model (HBM) as a guiding theoretical framework, the findings of the study revealed that the gay-friendly, tropical, relaxing environments resulted in men letting their guard down and engaging in more risk than when they are at home. Various barriers such as peer pressure and substance use affect GBM’s ability to engage in healthier behaviors while traveling, with condom negotiation and HIV status disclosure as additional issues that impact the sex practices of this population. Results highlight the applicability of HBM constructs to provide insight for intervention development for this population.     

Social Embodiment of Technical Devices: Eyeglasses Over the Centuries and According to their Uses

This article is an attempt to prepare the ground for the analysis and theorization of the connection between the body and technical devices emerging from miniaturized wearable technologies. The research object is a secular and common “body object,” namely, eyeglasses. The article reviews the social history of this artifact and analyzes its patterns of use, showing how the distributed sociotechnical networks of action containing these simple optical systems are constantly deconfigured and reconfigured. In other words, the device is not simply subject to physical incorporation. The unstable balance between the artifact's projection onto the surrounding space and its attachment to the physical body is analyzed through the heterogeneousness of bodies coming into play as the device is socially embodied. As the corporal frame and physical, distributed, and social bodies overlap, the notion of “bodies object” emerges. This covers the artifact-related and social environment, the plural nature of which could be of great value to research and development teams, helping them to diversify their representations of the user, as an agent acting in a variety of networks with a variety of bodies.     

Stigma,AIDS, and HIV Prevention in Africa: Reports from Community Organizations Providing Prevention Services

ABSTRACT

The AIDS epidemic in Africa remains a serious health crisis. Nongovernmental organizations (NGOs) in Africa play a critical role in the delivery of HIV prevention services. An important barrier to their HIV prevention efforts is stigma directed at persons living with HIV/AIDS. In order to understand how stigma affects HIV prevention programming, we conducted in-depth qualitative interviews with NGO directors in 29 African countries. Qualitative analytic approaches were used to identify key themes. Substantial discrimination and stigmatization of HIV-positive persons was reported. HIV-positive women were particularly likely to suffer negative social and economic consequences. The stigma associated with HIV interfered with disclosure of HIV status, risk-reduction behaviors, and HIV testing, creating significant barriers to HIV prevention efforts.

Interventions to reduce AIDS-related stigma in Africa are urgently needed. Reducing the burden of stigma is critical to fighting the epidemic in Africa and could play an important role in global HIV reduction.