scholarly journals Indirect reciprocity with private, noisy, and incomplete information

2018 ◽  
Vol 115 (48) ◽  
pp. 12241-12246 ◽  
Author(s):  
Christian Hilbe ◽  
Laura Schmid ◽  
Josef Tkadlec ◽  
Krishnendu Chatterjee ◽  
Martin A. Nowak

Indirect reciprocity is a mechanism for cooperation based on shared moral systems and individual reputations. It assumes that members of a community routinely observe and assess each other and that they use this information to decide who is good or bad, and who deserves cooperation. When information is transmitted publicly, such that all community members agree on each other’s reputation, previous research has highlighted eight crucial moral systems. These “leading-eight” strategies can maintain cooperation and resist invasion by defectors. However, in real populations individuals often hold their own private views of others. Once two individuals disagree about their opinion of some third party, they may also see its subsequent actions in a different light. Their opinions may further diverge over time. Herein, we explore indirect reciprocity when information transmission is private and noisy. We find that in the presence of perception errors, most leading-eight strategies cease to be stable. Even if a leading-eight strategy evolves, cooperation rates may drop considerably when errors are common. Our research highlights the role of reliable information and synchronized reputations to maintain stable moral systems.

2020 ◽  
Vol 12 (10) ◽  
pp. 4048
Author(s):  
Jennifer Johnson Jorgensen ◽  
Diane Masuo ◽  
Linda Manikowske ◽  
Yoon Lee

It is believed that highly involved business owners and community members will yield benefits to ensure business and community sustainability over time. However, little research has delved into understanding the role of business owners’ involvement and the community’s involvement in business outcomes. Thus, the purpose of this study was to investigate the reciprocal involvement of family business owners and the community. To investigate this phenomenon, this study utilized survey data from a rare group of business owners who currently operate long-standing businesses. Results indicate that more involved business owners perceived higher levels of business success. When seeking a profit, business owners also tended to be more involved in the community than owners not seeking a profit. However, family-owned businesses felt that the community did not contribute to their businesses and did not stay involved over time. Overall, business owners felt that they contributed more than the community provided in return. Recommendation is made to stress in entrepreneurship curricula the importance of reciprocal involvement between businesses and their communities and vice versa to promote business and community sustainability over time.


2009 ◽  
pp. 1-36 ◽  
Author(s):  
Wanda Wiegers

This article explores the significance of gender difference in the custodial claims of biological parents where de facto care of children has been transferred to unrelated parties. Drawing on media accounts, the trial transcript, and the 2007 decision in Hendricks v. Swan (the “Saskatoon Dad” case), as well as an extensive survey of similar reported cases, the author identifies changes in the construction of birth mothers and genetic fathers over time, both as claimants and non-claimants of custody. The author contends that despite significant differences in their biological roles, mothers and fathers are constructed as formally equal claimants in this context. Both mothers and fathers nonetheless lose out more often than not to third parties, often on grounds of instability rather than bonding. The role of gender in the application of the best interests test to claims by biological parents, particularly the extent to which gendered norms affect assessments of stability, is analyzed. In relation to biological non-claimants, the author addresses the erasure of the birth mother’s experience in Hendricks through the use of a formal equality lens and examines assumptions regarding non-disclosure of paternity that privilege the interests of genetic fathers. In conclusion, potential ways of avoiding or minimizing the trauma associated with these cases are briefly canvassed.


2017 ◽  
Vol 10 (2) ◽  
pp. 188
Author(s):  
Mahboobeh Mina ◽  
Mehdi Sokhanvar ◽  
Davood Jahanbazi ◽  
Seyyed Hoseyn Hoseyni Rechi

Given the relativity principle of contracts their impacts in proportion to third parties are an exceptional issue. In a possible assumption there is a possibility of harm and damage to a third party because of the contract between two people. In our juridical texts, some religious experts have sporadically in a topic of jurisprudence stated the instances of these contracts and have considered two theories of validity and invalidity about them. On the basis of this assumption, although the law of the way of implementing financial sentences considered hanged in 2014 but its 21st article with a bit of expansion has considered the former result. Therefore concerning these contracts by considering the valuable rule of the principle of no harm, we can accept the theory of relative lack of influence. Given the importance and role of the contracts in the life of community members and the lack of determining the influence of such contracts in legal and juridical texts the analysis of these impacts seems to be necessary. In the present article by analyzing the subject in legal and juridical texts of Iran the influence of these contracts in the relation between the parties and in proportion to third party is analyzed.


2020 ◽  
Vol 3 (1) ◽  
pp. 100
Author(s):  
Elvira Junita ◽  
Yuli Handayani ◽  
Lufita Nur Alfiah

AbstrakPermasalahan kesehatan yang timbul saat ini merupakan akibat dari perilaku hidup yang tidak sehat. Gaya hidup yang kurang baik mengakibatkan tingginya angka kejadian Penyakit Tidak Menular, Di Desa Rambah Hilir kunjungan penderita hipertensi dan diabetes di Puskesmas Rambah Hilir I di tahun 2018 ini sampai bulan Juni 66 kasus Hipertensi 27 Kasus Diabetes. Gerakan Masyarakat Hidup Sehat (GERMAS) merupakan progam Pemerintah untuk mengajak masyarakat hidup sehat dengan focus pada 3 kegiatan utama yaitu melakukan aktifitas fisik, makan buah sayur dan cek kesehatan secara rutin minimal enam bulan sekali.Dalam Program Kemitraan Masyarakat ini upaya yang dilakukan adalah meningkatkan gaya hidup sehat yakni meningkatnya aktifitas fisik yang dilakukan dengan melaksanakan kegiatan rutin senam bersama setiap hari minggu dan meningkatkan konsumsi buah dan sayur dengan memanfaatkan lahan perkarangan rumah warga dengan menanam buah dan sayur dihalaman rumah untuk memenuhi kebutuhan konsumsi buah dan sayur. Upaya Peningkatan peran masyarakat dalam memeriksakan kesehatannya dengan mendirikan posko kesehatan untuk memudahkan masyarakat dalam memeriksa kesehatannya. Luaran yang telah dicapai adalah Adanya kegiatan senam rutin, meningkatnya konsumsi buah dan sayur dengan Adanya tanaman buah dan sayur disetiap rumah warga, makan buah dan sayur bersama setiap hari minggu, Adanya pemeriksaan kesehatan secara berkala.Abstract.Health problems that currently emergeare resulted from unhealthy living behaviours. A bad lifestyle causes an increase innon-communicable diseases cases. According to patient visit data until June 2018 at the community health centre (Puskesmas) Rambah Hilir I, Rambah Hilir Village, Rokan Hulu, Riau, it shows that there were 66 cases of hypertension and 27 cases of diabetes.The Healthy Life Society Movement (GERMAS) is a government program to encourage people to live a healthy lifestyle focusing on 3 main activities namely physical activities, eating vegetables, together with regular health check-upsat least once every 6 months. This community partnership program attempts to enhance the healthy lifestyle by intensifying physical activitiesthrough a routine collective exercise on every Sunday and increasing fruits and vegetables consumption. The community members’ yards are used as land to grow fruits and vegetables for meeting the community’s needs. Regarding the effort to improve the role of the community members to check their health, it was carried out by establishing a health post to facilitate them in checking-up their health. Outputs that have been achieved are the routine exercise; an increase in fruits and vegetables consumptionasthere are fruit and vegetable plants in every resident's houses; eating fruits and vegetables collectively on every Sunday; as well as regular health check-ups.


2015 ◽  
Vol 2 (4) ◽  
Author(s):  
Peter Wade

<p class="p1"><span class="s1"><strong>Resumen </strong></span>| En este trabajo quiero presentar una cronología convencional del concepto raza que marca un movimiento en el cual raza cambia de ser una idea basada en la cultura y el medio ambiente, a ser algo biológico, inflexible y determinante, para luego volver a ser una noción que habla de la cultura<span class="s2"><strong>.</strong></span>Resumo cómo la idea de raza ha cambiado a través del tiempo, mirando necesariamente el rol que ha desempeñado la ciencia, y enfocando los diferentes discursos de índole <em>natural-cultural </em>sobre los cuerpos, el medio ambiente y el comportamiento, en los cuales las dimensiones culturales y naturales siempre coexisten<span class="s2"><strong>.</strong></span>“La naturaleza” no puede ser entendida solamente como “la biología” y ni la naturaleza ni la biología necesariamente implican sólo el determinismo, la fijeza y la inmutabilidad Estar abiertos a la coexistencia de la cultura y la naturaleza y a la mutabilidad de la naturaleza nos permite ver mejor el ámbito de acción del pensamiento racial.</p><p class="p1"><strong><em>Race, Science and Society</em></strong></p><p class="p1"> </p><p class="p2"><span class="s1"><strong>Abstract </strong></span>| In this article I present and critique a standard chronology of race as, first, a concept rooted in culture and environment, and later in human biology and determinism, and finally back to culture alone<span class="s2"><strong><em>.</em></strong></span>I will outline changing understandings of race over time, with some attention to the role of science, broadly understood, and on the continuing but changing character of race as a natural-cultural discourse about organic bodies, environments and behavior, in which both cultural and natural dimensions always co-exist<span class="s2"><strong><em>.</em></strong></span>“Nature” is not to be understood simply as “biology,” and neither nature nor biology necessarily imply the fixity and determination that they are often assumed nowadays to involve<span class="s2"><strong><em>.</em></strong></span>Being open to the co-existence of culture and nature and the mutability of the latter allows us to better comprehend the whole range of action of racial thinking.</p>


Author(s):  
Pierre Pestieau ◽  
Mathieu Lefebvre

This chapter reviews the public health care systems as well as their challenges. It first shows how expenditure on health care has evolved in previous decades and deals with the reasons for the growth observed in almost every European country. It emphasizes the role of technological progress as a main explanatory factor of the increase in medical expenditure but also points to the challenges facing cost-containment policies. Especially, the main common features of health care systems in Europe, such as third-party payment, single provider approach and cost-based reimbursement are discussed. Finally the chapter shows that although inequalities in health exist in the population, health care systems are redistributive. Reforms are thus needed but the trade-off between budgetary efficiency and equity is difficult.


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