The role of privacy concerns in the sharing economy

Internet-mediated sharing is growing quickly. Millions of users around the world share personal services and possessions with others ? often complete strangers. Shared goods can amount to substantial financial and immaterial value. Despite this, little research has investigated privacy in the sharing economy. To fill this gap, we examine the sharing–privacy nexus by exploring the privacy threats associated with Internet-mediated sharing. Given the popularity of sharing services, users seem quite willing to share goods and services despite the compounded informational and physical privacy threats associated with such sharing. We develop and test a framework for analyzing the effect of privacy concerns on sharing that considers institutional and social privacy threats, trust and social-hedonic as well as monetary motives.     

Probabilistic cost-effectiveness analysis of HIV prevention. Comparing a Bayesian approach with traditional deterministic sensitivity analysis

In cost-effectiveness analysis, the incremental cost-effectiveness ratio is used to measure economic efficiency of a new intervention, relative to an existing one. However, costs and effects are seldom known with certainty. Uncertainty arises from two main sources: uncertainty regarding correct values of intervention-related parameters and uncertainty associated with sampling variation. Recently, attention has focused on Bayesian techniques for quantifying uncertainty. We computed the Bayesian-based 95% credible interval estimates of the incremental cost-effectiveness ratio of several related HIV prevention interventions and compared these results with univariate sensitivity analyses. The conclusions were comparable, even though the probabilistic technique provided additional information.     

A century of population aging in Germany

The population of Germany is becoming progressively more elderly, and this article focuses on the causes and implications of that trend. We discuss the demographic processes that occurred in Germany in the second half of the 20th century and describe the developments that the population of Germany will undergo in the next 50 years, which promise to exert a profound influence on the economic and social future of the country.     

An economic anatomy of culture: Attitudes and behaviour in inter- and intra-national ultimatum game experiments

We examine bargaining behaviour in experimental ultimatum games with Malaysian and UK subjects. Significant differences in offer levels between the two national groups are explained with reference to differences in their responses to particular dimensions of the World Values Survey questionnaire. These attitudinal differences are interpreted as cultural difference between the subject groups that are responsible for their differential behaviour.     

ViSC Social Competence Program

The ViSC Social Competence Program has been implemented in Austrian schools within the scope of a national strategy plan, Together Against Violence. The program is a primary preventive program designed for grades 5 to 8. The prevention of aggression and bullying is defined as a school development task, and the initial implementation of the program lasts one school year. The program consists of universal and specific actions that are implemented through in-school teacher training and a class project for students. The program was evaluated with a randomized intervention control group design. Data were collected from teachers and students. Results suggest that the program reduces aggression in schools.     

Where fairness fails: data,algorithms, and the limits of antidiscrimination discourse

ABSTRACT

Problems of bias and fairness are central to data justice, as they speak directly to the threat that ‘big data’ and algorithmic decision-making may worsen already existing injustices. In the United States, grappling with these problems has found clearest expression through liberal discourses of rights, due process, and antidiscrimination. Work in this area, however, has tended to overlook certain established limits of antidiscrimination discourses for bringing about the change demanded by social justice. In this paper, I engage three of these limits: 1) an overemphasis on discrete ‘bad actors’, 2) single-axis thinking that centers disadvantage, and 3) an inordinate focus on a limited set of goods. I show that, in mirroring some of antidiscrimination discourse’s most problematic tendencies, efforts to achieve fairness and combat algorithmic discrimination fail to address the very hierarchical logic that produces advantaged and disadvantaged subjects in the first place. Finally, I conclude by sketching three paths for future work to better account for the structural conditions against which we come to understand problems of data and unjust discrimination in the first place.     

“Revenge” and “Rescue”: Workplace Deviance in the Taxicab Industry*

This study explores taxicab drivers’ acts of “revenge” and “rescue,” some of which are expressive acts, while others are more instrumental. This article builds on earlier theories of workplace deviance, demonstrating how deviance can serve different purposes and expanding the concept of “deviance admiration” ( Heckert and Heckert 2004 ). It examines deviance in a circumstance—the taxicab industry—which introduces a tension between mandated conformity and necessary deviance: employees must conform to the employers’ rules and yet, to accomplish their jobs well, they need to abandon those rules occasionally. In addition to its theoretical contributions, this work has important practical applications for managers.     

Inferential properties of an individual-based survival model using release-recapture data: Sample size,validity and power

A model for analyzing release-recapture data is presented that generalizes a previously existing individual covariate model to include multiple groups of animals. As in the previous model, the generalized version includes selection parameters that relate individual covariates to survival potential. Significance of the selection parameters was equivalent to significance of the individual covariates. Simulation studies were conducted to investigate three inferential properties with respect to the selection parameters: (1) sample size requirements, (2) validity of the likelihood ratio test (LRT) and (3) power of the LRT. When the survival and capture probabilities ranged from 0.5 to 1.0, a total sample size of 300 was necessary to achieve a power of 0.80 at a significance level of 0.1 when testing the significance of the selection parameters. However, only half that (a total of 150) was necessary for the distribution of the maximum likelihood estimators of the selection parameters to approximate their asymptotic distributions. In general, as the survival and capture probabilities decreased, the sample size requirements increased. The validity of the LRT for testing the significance of the selection parameters was confirmed because the LRT statistic was distributed as theoretically expected under the null hypothesis, i.e. like a chi 2 random variable. When the baseline survival model was fully parameterized with population and interval effects, the LRT was also valid in the presence of unaccounted for random variation. The power of the LRT for testing the selection parameters was unaffected by over-parameterization of the baseline survival and capture models. The simulation studies showed that for testing the significance of individual covariates to survival the LRT was remarkably robust to assumption violations.     

Extracurricular activities, athletic participation, and adolescent alcohol use: gender-differentiated and school-contextual effects

This research investigates the effects of extracurricular activities on alcohol use among male (n = 4,495) and female (n = 5,398) adolescents who participated in the 1990-92 National Education Longitudinal Study. Previous studies have assessed the association between extracurricular activities and alcohol use, but none have explored whether the association depends on the school context. Using a multilevel model, I examine whether school-level factors affect the relationship between involvement in athletic or nonathletic activities and changes in adolescent alcohol use from 1990 to 1992. The results indicate that the negative association between nonathletic activities and alcohol use is stronger among males in low-minority-population schools. Moreover the positive association between athletic involvement and alcohol use is stronger among females in lower-socioeconomic-status schools and males in higher-socioeconomic-status schools. I propose that these results reflect variation in high school cultures and in the resources available to schools.     

Hearing voices in the archive

This essay is an attempt to fathom the performative and textual potential of historical sound recordings from the Lautarchiv in Berlin, along the available written files and a particular set of acoustic files spoken by an isiXhosa speaker. Read and listened to together, these files document the event and rationale of the recordings of the Phonographische Kommission with a man from the Eastern Cape, who was recorded while being interned as a foreign subject, in a German camp for British civilians in World War I. Following the acousmatic voice that speaks on several recordings, the essay explores the position of the speaker and the enunciation that speaks of the experience of war and displacement, and the complexities of audible traces of imperial knowledge production.