Social Contexts and Building Social Capital for Collective Action: Three Case Studies of Volunteers in the Context of HIV and AIDS in South Africa

Social capital is increasingly conceptualised in academic and policy literature as a panacea for a range of health and development issues, particularly in the context of HIV. In this paper, we conceptualise social capital as an umbrella concept capturing processes including networks, norms, trust and relationships that open up opportunities for participation and collective action that allow communities to address issues of common concern. We specifically outline social capital as comprising three distinct forms: bonding, bridging and linking social capital. Rather than presenting original data, we draw on three well‐documented and previously published case studies of health volunteers in South Africa. We explore how social contexts shape the possibility for the emergence and sustainability of social capital. We identify three cross‐cutting contextual factors that are critical barriers to the emergence of social capital: poverty, stigma and the weakness of external organisations' abilities to support small groups. Our three case studies suggest that the assumption that social capital can be generated from the ground upwards is not reasonable. Rather, there needs to be a greater focus on how those charged with supporting small groups—non‐governmental organisations, bureaucracies and development agencies—can work to enable social capital to emerge. Copyright © 2014 John Wiley & Sons, Ltd.     

How perceived interpersonal justice relates to job burnout and intention to leave: The role of leader–member exchange and cognition‐based trust in leaders

Intense competition among companies makes it particularly important for organizations to retain talented and skilled employees to maintain their competitive advantage. This study examines the linkage between employees' perceptions of the interpersonal justice demonstrated by their leaders and consequent job burnout resulting in turnover intention by focusing on the mediating role of leader–member exchange (LMX) as well as the moderating role of employees' cognition‐based trust in their leaders. Data were obtained from 158 MBA students attending a large university in South Korea. Using structural equation modelling, we examined an integrative model that combines interpersonal justice, LMX, job burnout, and turnover intention. The results reveal that (a) LMX partially mediates the relationships between interpersonal justice and job burnout and (b) employees' cognition‐based trust in their leaders moderates the relationship between LMX and job burnout. By examining the mediating role of LMX as well as the moderating role of cognition‐based trust in the relationship between perceived interpersonal justice and employee job burnout, this study (1) provides a comprehensive explanation of employee job burnout and (2) outlines the implications for job burnout research and practice.     

The Adaptive Use of Recognition in Group Decision Making

Applying the framework of ecological rationality, the authors studied the adaptivity of group decision making. In detail, they investigated whether groups apply decision strategies conditional on their composition in terms of task‐relevant features. The authors focused on the recognition heuristic, so the task‐relevant features were the validity of the group members' recognition and knowledge, which influenced the potential performance of group strategies. Forty‐three three‐member groups performed an inference task in which they had to infer which of two German companies had the higher market capitalization. Results based on the choice data support the hypothesis that groups adaptively apply the strategy that leads to the highest theoretically achievable performance. Time constraints had no effect on strategy use but did have an effect on the proportions of different types of arguments. Possible mechanisms underlying the adaptive use of recognition in group decision making are discussed.     

Concurrent cognitive processes in rat serial pattern learning: II. Discrimination learning,rule learning,chunk length,and multiple‐item memories

The current experiment examined the factors that determine acquisition for elements of highly structured serial patterns. Three groups of rats were trained on three patterns with parallel rule‐based hierarchical structure, but with 3‐, 4‐, or 5‐element chunks, each with a final violation element. Once rats mastered their patterns, probe patterns were introduced to answer several questions. To assess the extent to which the learned response pattern depended on intrachamber location cues for anticipating different element types, Spatial Shift Probes shifted the starting lever of patterns to locations that positioned chunk boundaries where they had never been experienced during training. To assess the extent to which a phrasing cue is necessary for rats to perform a chunk‐boundary response, a Cue Removal Probe tested whether rats would produce a chunk‐boundary response in the correct serial position if the phrasing cue was omitted. To assess the extent to which cues from multiple trials leading up to the violation element are required to anticipate the violation element, Multiple‐Item Memory Probes required rats to make an unexpected response on one of the elements in the last two chunks of the pattern prior to the violation element. The results indicated that rats used multiple concurrent learning and memory processes to master serial patterns, including discrimination learning, rule learning, encoding of chunk length, and multiple‐item memories.     

考虑题目选项信息的非参数认知诊断计算机自适应测验

选择题中的作答选项能提供额外诊断信息, 为充分利用选项信息, 研究提出认知诊断计算机自适应测验(CD-CAT)中两种处理选择题选项信息的非参数选题策略和变长终止规则。模拟研究的结果发现：(1)定长条件下两种非参数选题策略的分类准确性整体要高于参数选题策略; (2)两种非参数选题策略较参数选题策略具有更加均衡的题库使用情况; (3)非参数选题策略在两种新的变长终止规则下具有更高的分类准确率; (4)两种非参数选题策略均适用于选择题CD-CAT情境, 使用者可任选其一进行测验分析。     

Theory and tests of the conjoint commutativity axiom for additive conjoint measurement

The empirical study of the axioms underlying additive conjoint measurement initially focused mostly on the double cancellation axiom. That axiom was shown to exhibit redundant features that made its statistical evaluation a major challenge. The special case of double cancellation where inequalities are replaced by indifferences–the Thomsen condition–turned out in the full axiomatic context to be equivalent to the double cancellation property but without exhibiting the redundancies of double cancellation. However, it too has some undesirable features when it comes to its empirical evaluation, the chief among them being a certain statistical asymmetry in estimates used to evaluate it, namely two interlocked hypotheses and a single conclusion. Nevertheless, thinking we had no choice, we evaluated the Thomsen condition for both loudness and brightness and, in agreement with other lines of research, we found more support for conjoint additivity than not. However, we commented on the difficulties we had encountered in evaluating it. Thus we sought a more symmetric replacement, which as Gigerenzer and Strube (1983) first noted, is found in the conjoint commutativity axiom proposed by Falmagne (1976, who called it the “commutative rule”). It turns out that, in the presence of the usual structural and other necessary assumptions of additive conjoint measurement, we can show that conjoint commutativity is equivalent to the Thomsen condition, a result that seems to have been overlooked in the literature. We subjected this property to empirical evaluation for both loudness and brightness. In contrast to Gigerenzer and Strube (1983), our data show support for the conjoint commutativity in both domains and thus for conjoint additivity.     

Faith‐Based Social Services: Saving the Body or the Soul? A Research Note

Faith‐based organizations might be ideal social service providers, claiming to transform clients’ lives with holistic support while meeting immediate needs. While organizations have such goals, their success is impacted by constituencies with differing goals for the organization. Clients with goals not commensurate with an organization's may compromise its ability to attain its goals. Three questions are examined here: What are the goals of faith‐based service providers? When asked what they think about the services, do clients share the organizational goals? Are organizations likely to meet either set of goals? Homeless persons patronizing faith‐based soup kitchens were interviewed; service activities of organizations were observed. Clients’ goals focused on survival in their current situation. Organizations’ goals ranged from meeting clients’ immediate needs to transforming clients through spiritual restoration. Congregations studied met clients’ immediate needs. However, clients’ accommodational goals were potentially problematic for organizations with spiritual goals.