The rationality of social structure: Cooperation in social dilemmas through investments in and returns on social capital

We develop a game-theoretic model of how social structure in the sense of a network of relations between actors helps to mitigate social dilemmas. We simultaneously endogenize the network by modeling actors’ incentives to establish the network. Since the network of relations helps to mitigate social dilemmas, it constitutes social capital. We thus analyze investments in and returns on social capital in social dilemmas and characterize the value of social capital. Our model covers a class of social dilemma games including the Trust Game, the Investment Game, the Prisoner's Dilemma, the two-actor Public Goods Game, and others.     

Between Philosophy and Art: The Avant-Garde Work of Debora Vogel

ABSTRACT

Debora Vogel (1900–1942) helped develop modernism in Lviv in the interwar period. As a philosopher and writer, she was able to make connections between the dominant Polish school of philosophical logic (the so-called Lviv-Warsaw School) and the artistic circles in Lviv, to which Bruno Schulz, Stanis?aw Ignacy Witkiewicz and Leon Chwistek belonged.

Inspired by Cubism and Surrealism, but also by recent philosophical discussions, Vogel developed a writing technique called montage. In her poems and prose written in Yiddish and Polish, she reflected on the relationship between humans and modern urban architecture, playing with mathematical or geometric words and color predicates. At the same time she abandoned traditional narrative models with her style of writing.

In view of the above, this article presents Vogel's experimental writing practices and aesthetics concepts by locating her work in Lviv's culture of knowledge.     

Studienabbruch und Studienfachwechsel in der Soziologie: Ein Blick hinter die Zahlen

Analyses of dropout ratios for a subject are predominantly based on data from the university administration or drawn from standardized surveys. A detailed analysis of several years of enrollments for a selected subject shows that such data strongly overestimate the true dropout ratio (at least concerning ?Magister”-students). This is due to the inability of such data to identify virtual enrollments and to identify students waiting for enrollment in their subject of choice. At least half of the dropouts from sociology (the examined subject) come from one of those two groups. An analysis of the motivations for dropping out of the chosen subject indicates fundamental problems in the process of choosing a subject. These problems are a much greater factor for such decisions than the quality of teaching.     

On competing rewards standards—an experimental study of ultimatum bargaining

In the tradition of earlier experimental studies, this paper introduces competing reward standards by letting parties bargain over the distribution of chips. The monetary equivalents of a chip for the bargaining parties can be equal (no competing rewards) or different (competing rewards). The ultimatum game is used as a tool to learn about reward standards in an asymmetric procedure. A major effect of different monetary chip equivalents is observed only when the proposer has a higher chip value. Results are compared to those reported in [Games Econ. Behav. 13 (1966) 100], who used a different experimental design.     

Attachment, social support, and responses following the death of a companion animal

This research tested hypotheses concerning attachment, social support, and grief responses to the loss of animal companionship. Participants whose companion cat or dog had recently died (N = 429) completed the Attachment Style Questionnaire, the Inventory of Complicated Grief, and the Multidimensional Health Profile-Psychosocial Functioning questionnaires. Both attachment anxiety and attachment avoidance were found to be positively associated with respondents' grief, depression, anxiety, and somatic symptoms. Social support was found to be negatively associated with these outcomes as well as with attachment anxiety and attachment avoidance. In multiple regression analyses, attachment anxiety incrementally predicted grief, anxiety and somatic symptoms, attachment avoidance incrementally predicted grief and depression, and social support incrementally predicted all outcomes. Interaction effects of attachment and social support in relation to outcomes were not found. The present study's implications and limitations are discussed, as are directions for future research.     

Youth Migration Decisions in Sub-Saharan Africa: Satellite-Based Empirical Evidence from Nigeria

This article examines the implications of urban growth on youth migration decisions in Nigeria. We use night light intensity data combined with Living Standards Measurement Study-Integrated Surveys on Agriculture data, as an indicator of urban growth and associated economic opportunities. Employing alternative econometric approaches that exploit the spatial and temporal differences in urban growth as proxied by night light intensity, we find that urban growth in potential migrant destinations encourages youth migration. We also find heterogeneous responses to urban growth among various groups of youth as well as varying responses to different types of migration. Broadly, women and those youth with more education are more likely to migrate, while those in households with livestock are less likely to migrate. Often, however, the effects are complex and varied. For example, land and physical asset ownership encourage temporary migration; but greater land ownership discourages permanent migration, while physical assets have insignificant effects. Our results from Nigeria show that policy makers concerned about rural–urban youth exodus should adopt a differentiated, in terms of targets, and multidimensional policy approach to reap the benefits of urbanization while avoiding its negative consequences.     

Maladaptive Peer Relationships and the Development of Relational and Physical Aggression During Middle Childhood

This study examined the unique roles of peer rejection and affiliation with aggressive peers in the development of relational and physical aggression in a sample of 979 2nd through 4th grade children. Information about target children and their best friends’ aggression and peer rejection was gathered via peer‐nominations when the majority of children were in the 3rd grade, and again approximately one year later. Friendships were identified by having target children nominate their three best friends in their classroom. Path analyses conducted with children who had at least one reciprocated friendship revealed that peer rejection and friends’ aggression predicted changes in target children's aggression; however, the patterns of relations varied by gender and form of aggression. Higher initial levels of rejection and friends’ relational aggression predicted increases in relational aggression among girls only, whereas rejection and friends’ physical aggression predicted increases in physical aggression among boys and girls. The significance of these results for the application of peer influence theories to relational aggression, and to females, is discussed.     

Integrated approach for optimizing quality control in international manufacturing networks

Abstract

This article aims at providing an integrated approach for optimizing quality control in International Manufacturing Networks (IMN) which can be characterized by consisting of numerous plants acting autonomously according to an individual target system. A key challenge is to ensure the overall process quality despite distributed value creation processes and differing target systems in dynamic environments. Hence, the developed approach allows for identifying potentials in the quality control strategy using a value stream-based method to visualize quality characteristics and procedures in the production process chain. Furthermore, the approach contains a framework for identifying possible improvement measures and a simulation-based evaluation concept to evaluate the effects of different measures with respect to individual target systems. The simulation combines elements of a discrete-event simulation in order to depict the value stream with agent-based modelling for realizing different target systems by considering distinctive plant roles. The article concludes with a case study of a globally operating automotive supplier to apply the approach. A forward research agenda is proposed that evaluates the approach in multiple cases, deriving patters across companies or industries.