On a Dualization of Graphical Gaussian Models: A Correction Note

Abstract.  We correct two proofs concerning Markov properties for graphs representing marginal independence relations.     

On the Extension of the Utilitarian and Suppes–Sen Social Welfare Relations to Infinite Utility Streams

Extensions of a utilitarian and a Suppes–Sen grading principle defined on infinite utility streams are characterized with a stronger notion of Anonymity and without any consistency postulate. The relative merits of the Extended Utilitarian relation are discussed and its rankings are compared with those of the overtaking criterion and the Basu–Mitra Utilitarian relation.I am indebted to Tapan Mitra for several insightful discussions on the subject matter of this paper and on intertemporal social choice theory in general. I thank a Managing Editor for meticulously reading through two versions of the paper and two anonymous referees of this journal for providing detailed comments, pointing out errors and suggesting expositional changes. I also thank Kaushik Basu for his comments. I am responsible for any remaining errors.     

A decision support system for the selection of a casting process using analytic hierarchy process

This paper presents an Analytic Hierarchy Process (AHP) based decision support system to select the most suitable casting process for a given product. The hierarchical structure of the proposed method allows the decision maker to compare the different casting processes using the material suitability and flexibility, geometrical complexity, dimensional tolerance and surface finish of the casting, and the cost as the criteria for selection. Judgemental inconsistency of the decision maker in selecting the casting process is taken care by ensuring that the value of consistency ratio is below (0.1). A numerical example is presented to illustrate the effectiveness of the proposed methodology for selecting the suitable casting process.     

Disease-related stigma: comparing predictors of AIDS and cancer stigma

This study explores the prevalence of AIDS and cancer stigma as influenced by attitude toward homosexuality, religiosity, authoritarianism, and androgyny. This study used a quasi-experimental survey design (N = 485) to examine attitude toward people with AIDS and cancer, and interaction with people with AIDS and cancer. Negative attitudes toward homosexuality, high religious intensity and ideology, high authoritarianism, and low expressive emerged as factors related to more negative attitudes toward people with AIDS and unwillingness to interact with people with AIDS. Attitudes toward people with cancer were generally not related to the variables. Findings explore how to campaign efforts to reduce existing negative attitudes toward AIDS and homosexuality, given that gay men with AIDS are especially stigmatized. Implications and directions for future research are discussed, especially for interventions.     

Correction to: Effect of reduced opportunities on bargaining outcomes: an experiment with status asymmetries

Theory and Decision - Part of the equation in sub-section “Key findings” is missing in the original publication of the article. The error was caused by the fact that the equation, due...     

The Leverage of Protest: Market,Media, and Reputational Disruption in Social Movement Success

How do social movements gain concessions from large corporations? The ability of protests to attain leverage by imposing disruption costs on their targets is widely assumed but less often tested. In this article, we assess the ability of protests to attain concessions by disrupting three broad sources of interest to firm officials: maximizing shareholder value, gaining positive media, and fostering a well-reputed image. In contrast to the body of research on the benefits to movements from shaping media discourses and damaging the reputations of their targets, we find that only market disruption provides protests with leverage. We show this through statistical analyses of an original database of protests against large corporations in the United States over five years, 2005–2009. This study advances social movement and organizational research by demonstrating the ways in which the interests of large corporations provide insurgents with means of attaining leverage over their targets. It also speaks to the broad debate over the importance of disrupting the material versus symbolic interests of movement targets. Our results suggest that when it comes to obtaining concessions from large corporations, it is material disruption and not symbolic disruption that provides movements with leverage.     

The Role of Social Goals in Bullies' and Victims' Social Information Processing in Response to Ambiguous and Overtly Hostile Provocation

Understanding what social goals are associated with bullying and victimization behaviours, even after allowing for biases in interpretation of and affective responses to social events, is critical for understanding the socio‐behavioural profile of bullies and victims. In the present study, 181 nine‐ to ten‐year‐olds' affective responses, attribution of intent, and social goals were assessed in the context of a series of ambiguous and overtly hostile provocation vignettes. Results showed that even after allowing for other social information processing biases, social goals were meaningfully associated with bullying and victimization scores. Bullying was inversely associated with relationship‐building goals, and positively associated with goals to be assertive over the provocateur when provocation was overtly hostile. Being victimized was associated with having submissive goals even when provocation was ambiguous and after accounting for attribution of hostile intent. Findings are discussed in light of theoretical and practical implications.     

Popular and Rejected Children's Reasoning Regarding Negative Emotions in Social Situations: The Role of Gender

Two studies compared popular and rejected children's reasoning regarding social interactions involving negative emotions. The first study, with 23 rejected and 23 popular 10‐ to 11‐year‐olds, involved hypothetical social scenarios where a classmate ‘victim’ was likely to experience a negative emotion. Although popular and rejected children both recognized negative emotions and were equally likely to suggest helping behaviour to aid the victim, there were gender effects on the type of helping behaviour suggested. Specifically, popular girls were significantly more likely to offer comforting behaviour than advice whereas popular boys offered advice more than comfort; no such preferences were exhibited by the rejected children. Furthermore, popular girls were significantly more likely than other children to refer to emotional states when justifying their helping response. In the second study, 30 popular and 30 rejected eight‐ to 10‐year‐olds identified the motives behind story characters' efforts to mask negative emotions. Popular girls were more likely to identify the target motives than rejected girls, but no such difference was apparent for the boys. The results are discussed in the light of evidence regarding gender differences in peer interaction patterns.     

Approaches to implementing manufacturing information systems

Since computers lie behind almost all aspects of new technology, industry now has the chance to develop true integrated Manufacturing Information Systems. This paper examines the developments in this direction which new technology makes available, and why companies should embrace them. Case studies are presented in which the progress achieved and problems encountered by three companies in realising their manufacturing information system are discussed. General conclusions are drawn from them and recommendations for successful implementation are put forward.