Evolutionary stability of cooperation in indirect reciprocity under noisy and private assessment

Indirect reciprocity is a mechanism that explains large-scale cooperation in humans. In indirect reciprocity, individuals use reputations to choose whether or not to cooperate with a partner and update others' reputations. A major question is how the rules to choose their actions and the rules to update reputations evolve. In the public reputation case, where all individuals share the evaluation of others, social norms called Simple Standing (SS) and Stern Judging (SJ) have been known to maintain cooperation. However, in the case of private assessment where individuals independently evaluate others, the mechanism of maintenance of cooperation is still largely unknown. This study theoretically shows for the first time that cooperation by indirect reciprocity can be evolutionarily stable under private assessment. Specifically, we find that SS can be stable, but SJ can never be. This is intuitive because SS can correct interpersonal discrepancies in reputations through its simplicity. On the other hand, SJ is too complicated to avoid an accumulation of errors, which leads to the collapse of cooperation. We conclude that moderate simplicity is a key to success in maintaining cooperation under the private assessment. Our result provides a theoretical basis for evolution of human cooperation.Comment: 12 pages, 3 figures, 1 table (main); 15 pages, 4 figures, 2 tables (supplement

Reputation-based Strategies for the Evolution of Cooperative Behaviour

Cooperation between strangers can be difficult to explain. Several mechanisms have been shown to sustain cooperation among which one of the most general is Indirect Reciprocity. This describes how reputation-based social norms can distinguish between appropriate and inappropriate behaviours and sustain cooperation through the promise of future reciprocity from other members of a population. We present three experiments that investigate how a social norm’s ability to sustain cooperation is affected when: information flow is restricted to between neighbours, anyone can punish and anyone can be punished, and when people are capable of fine tuning their behaviour in response to their environment. Using simulations and a series of agent-based models, we find that - in the two-person prisoner's dilemma - restricting the flow of information and ensuring people learn from their neighbours, benefits the maintenance of good behaviour. In such scenarios, the best chances for cooperation occur when actions are judged harshly, ensuring that a good reputation once lost, is difficult to regain. For social norms to sustain cooperation in collective action problems, similar harshness is required through the ongoing threat of punishment. These situations can be highly cooperative if withdrawal from the social dilemma is possible and such behaviour is not judged to be morally worse than defection. However, if people are not able to punish badly behaving peers, then free-riding runs rampant unless the population considers defection to be worse than withdrawing from the social dilemma. We show that an improvement on this state of affairs, can be obtained when agents are able to fine-tune their behaviour when confronted with various reputational environments. Regardless of how actions are morally viewed, cooperation has a good chance if people can be sufficiently deliberate

The role of social capital in undocumented migration : the case of undocumented Zimbabwean migrants in Botswana

This dissertation was carried out to try to understand the role of social capital in the migration of Zimbabwean migrants to Botswana. It describes elements and types of social capital Zimbabwean undocumented migrants used to come to Botswana. Questionnaires and in-depth interviews were used to obtain data from respondents. Though the influence of macro factors initially pushed migrants to migrate, there was evidence of the existence of social networks. Findings showed the use of social networks by Zimbabwean undocumented migrants. Though kinship networks were dominant in the initial migration stages there was a wane in the destination as migrants reverted to friendship networks for flexibility. Linking existed at both the place of origin and destination. Social control, channelling and negative social capital were discovered among migrants. Migrants developed mechanisms to counter the Botswana’s enforcement policy.Sociolog

Theory of Provocation

The present volume discusses the subject of provocation and its various applications in the field of political science. Provocation itself combines the artificial induction of events, attitudes and human behavior, and the unilateral prejudging of issues, resulting in the interlocutor being surprised, trapped, manipulated or extorted. A political provocation manifests itself in various forms: productive or parasitic; pointed, collective or networked influence; initiative or reactive and reflexive; causal, deceptive or discrediting; constructive or destructive. The author brings forth real-world examples to illuminate the various intricacies of this concept, its applications, aims, and much more

Strategies for sustainable socio-economic development and mechanisms their implementation in the global dimension

The authors of the book have come to the conclusion that it is necessary to effectively use modern approaches to developing and implementation strategies of sustainable socio-economic development in order to increase efficiency and competitiveness of economic entities. Basic research focuses on economic diagnostics of socio-economic potential and financial results of economic entities, transition period in the economy of individual countries and ensuring their competitiveness, assessment of educational processes and knowledge management. The research results have been implemented in the different models and strategies of supply and logistics management, development of non-profit organizations, competitiveness of tourism and transport, financing strategies for small and medium-sized enterprises, cross-border cooperation. The results of the study can be used in decision-making at the level the economic entities in different areas of activity and organizational-legal forms of ownership, ministries and departments that promote of development the economic entities on the basis of models and strategies for sustainable socio-economic development. The results can also be used by students and young scientists in modern concepts and mechanisms for management of sustainable socio-economic development of economic entities in the condition of global economic transformations and challenges

Theory of Provocation

The present volume discusses the subject of provocation and its various applications in the field of political science. Provocation itself combines the artificial induction of events, attitudes and human behavior, and the unilateral prejudging of issues, resulting in the interlocutor being surprised, trapped, manipulated or extorted. A political provocation manifests itself in various forms: productive or parasitic; pointed, collective or networked influence; initiative or reactive and reflexive; causal, deceptive or discrediting; constructive or destructive. The author brings forth real-world examples to illuminate the various intricacies of this concept, its applications, aims, and much more