Alle Publikationen

  • Erweiterte Suche öffnen

Treffer: 2
  • <<
  • 1

  • 2018

  • Khoo, Tommy; Fu, Feng; Pauls, Scott (2018): Spillover modes in multiplex games. Double-edged effects on cooperation and their coevolution. In: Scientific reports 8 (1). DOI: 10.1038/s41598-018-25025-3

    DOI: http://www.ncbi.nlm.nih.gov/pubmed/29720679 

    Abstract: In recent years, there has been growing interest in studying games on multiplex networks that account for interactions across linked social contexts. However, little is known about how potential cross-context interference, or spillover, of individual behavioural strategy impact overall cooperation. We consider three plausible spillover modes, quantifying and comparing their effects on the evolution of cooperation. In our model, social interactions take place on two network layers: repeated interactions with close neighbours in a lattice, and one-shot interactions with random individuals. Spillover can occur during the learning process with accidental cross-layer strategy transfer, or during social interactions with errors in implementation. Our analytical results, using extended pair approximation, are in good agreement with extensive simulations. We find double-edged effects of spillover: increasing the intensity of spillover can promote cooperation provided cooperation is favoured in one layer, but too much spillover is detrimental. We also discover a bistability phenomenon: spillover hinders or promotes cooperation depending on initial frequencies of cooperation in each layer. Furthermore, comparing strategy combinations emerging in each spillover mode provides good indication of their co-evolutionary dynamics with cooperation. Our results make testable predictions that inspire future research, and sheds light on human cooperation across social domains.

    Keywords: COMMONS, Disziplin, EVOLUTIONARY GAMES, Favoriten, GRAPHS, Interaction, Interaktion, interference of social interaction, Kooperation, Mathematik, NETWORKS, Netzwerk, Observablen/Kriterien für sozial angemessenes Verhalten und dessen Bewertung, social interaction, Soziale Angemessenheit, Soziologie, spillover effects, Voraussetzungen für sozial angemessenes Verhalten

  • 2017

  • Torlò, Vanina Jasmine; Lomi, Alessandro (2017): The Network Dynamics of Status. Assimilation and Selection. In: Social Forces 96 (1), S. 389-422. DOI: 10.1093/sf/sox040

    Abstract: Using longitudinal data that we have collected on friendship and advice relations in a cohort of MBA students, we examine how status affects the dynamics of network ties among peers. Estimates of Stochastic Actor-Oriented Models (SAOMs) suggest that status is a consequence of network ties because over time the level of status attributed to individual students by other students tends to the average level of status attributed to their network partners-a phenomenon we call status assimilation. Status is also an antecedent to network ties because it affects partner selection decisions, giving rise to distinct forms of social attachment. We find that both network-based processes of status assimilation, as well as status-based processes of social selection, are present, but they vary subtly yet significantly across network domains. Students tend to the average level of status of their friends, but not to that of their advisors. High-status students are more active in the friendship network, but more popular in the advice network. We find evidence of performance homophily rather than status homophily: students with similar grades are more likely to exchange friendship and advice ties. High-status students tend to be more central in the advice network, but status attributions spill over through friendship, rather than advice relations. The study documents how the relation between social status and social networks varies both over time, as well as across network domains. The study also demonstrates the importance of accounting for multiplexity-the tendency of a network to operate through another.

    Keywords: ADVICE, Bekanntheitsgrad, CENTRALITY, decision-making, Disziplin, EXCHANGE, Favoriten, friendship, Gruppenverhalten / Joint Action, INEQUALITY, MARKET, Modelle/Theorien, Netzwerk, Netzwerktheorien, ORGANIZATIONAL CHOICE, POWER, social importance dynamics, social networks, Soziale Angemessenheit, Soziologie, Status, Status-zentriert
  • <<
  • 1