A kind man benefits himself – but how? Evolutionary models of human food sharing

2004 ◽  
Vol 27 (4) ◽  
pp. 563-564 ◽  
Author(s):  
Thomas Getty
Keyword(s):  
Kin Selection ◽  
Reciprocal Altruism ◽  
Food Sharing ◽  
Relative Importance ◽  
Evolutionary Models ◽  
Costly Signaling ◽  
Human Food ◽  
The Right ◽  
Rule Out

Can evolutionary models explain food sharing in traditional human societies? Gurven's analysis cannot rule out any of the models (kin selection, reciprocal altruism, tolerated scrounging, costly signaling, or by-product mutualism), and quantitative partitioning of relative importance is not feasible. For now, the hypotheses seem like the proverbial blind men examining the elephant: each was partly in the right, and all were in the wrong!

The details of food-sharing interactions – their cost in social prestige

2004 ◽  
Vol 27 (4) ◽  
pp. 570-571 ◽  
Author(s):  
Amotz Zahavi
Keyword(s):  
Kin Selection ◽  
Reciprocal Altruism ◽  
Food Sharing ◽  
Evolutionary Models ◽  
Costly Signaling ◽  
Social Prestige ◽  
The Social ◽  
Gains And Losses

I agree with Gurven that costly signaling can explain food-sharing phenomena. However, costly signaling may also explain the role of food sharing in deterring rivals. Details of food-sharing interactions may reveal gains and losses in the social prestige of the interacting parties. The evolutionary models of kin selection and of reciprocal altruism are unstable and should be avoided.

Tolerated reciprocity, reciprocal scrounging, and unrelated kin: Making sense of multiple models

2004 ◽  
Vol 27 (4) ◽  
pp. 572-579 ◽  
Author(s):  
Michael Gurven
Keyword(s):  
Kin Selection ◽  
Reciprocal Altruism ◽  
Multiple Models ◽  
Costly Signaling ◽  
Common Features ◽  
Making Sense ◽  
Rigorous Testing

Four models commonly employed in sharing analyses (reciprocal altruism [RA], tolerated scrounging [TS], costly signaling [CS], and kin selection [KS]) have common features which render rigorous testing of unique predictions difficult. Relaxed versions of these models are discussed in an attempt to understand how the underlying principles of delayed returns, avoiding costs, building reputation, and aiding biological kin interact in systems of sharing. Special attention is given to the interpretation of contingency measures that critically define some form of reciprocal altruism.

The Biological and Evolutionary Logic of Human Cooperation

2005 ◽  
Vol 27 (1) ◽  
Author(s):  
Terence C. Burnham ◽  
Dominic D. P. Johnson
Keyword(s):  
Human Nature ◽  
Empirical Data ◽  
Kin Selection ◽  
Group Selection ◽  
Reciprocal Altruism ◽  
Alternative Solution ◽  
Individual Selection ◽  
Costly Signaling ◽  
Indirect Reciprocity ◽  
Costly Punishment

AbstractHuman cooperation is held to be an evolutionary puzzle because people voluntarily engage in costly cooperation, and costly punishment of non-cooperators, even among anonymous strangers they will never meet again. The costs of such cooperation cannot be recovered through kin-selection, reciprocal altruism, indirect reciprocity, or costly signaling. A number of recent authors label this behavior ‘strong reciprocity’, and argue that it is: (a) a newly documented aspect of human nature, (b) adaptive, and (c) evolved by group selection. We argue exactly the opposite; that the phenomenon is: (a) not new, (b) maladaptive, and (c) evolved by individual selection. In our perspective, the apparent puzzle disappears to reveal a biological and evolutionary logic to human cooperation. Group selection may play a role in theory, but it is neither necessary nor sufficient to explain human cooperation. Our alternative solution is simpler, makes fewer assumptions, and is more parsimonious with the empirical data.

The history of human food transfers: Tinbergen's other question

2004 ◽  
Vol 27 (4) ◽  
pp. 566-567
Author(s):  
Jim Moore
Keyword(s):  
Kin Selection ◽  
Multivariate Analyses ◽  
Reciprocal Altruism ◽  
Cross Cultural ◽  
Integrated System ◽  
Costly Signaling ◽  
Important Paper ◽  
Current Function ◽  
History Of ◽  
Close Relatives

Emphasis on cross-cultural testing, multiple currencies, multivariate analyses, and levels of explanation makes this an important paper. However, it does not distinguish current function from evolutionary origin; it lacks history. Rather than distinct alternatives, tolerated scrounging (TS), costly signaling (CS), and reciprocal altruism (RA) are likely to be sequentially evolved components of a single integrated system (and kin selection (KS) important only among very close relatives).

Penilaian Kinerja Dosen Dengan Menggunakan Metode AHP Studi Kasus di STIE Ahmad Dahlan Jakarta

Liquidity ◽  
2018 ◽  
Vol 2 (1) ◽  
pp. 100-109
Author(s):  
Ellya Sestri
Keyword(s):  
Decision Making ◽  
Performance Appraisal ◽  
Technological Progress ◽  
Pairwise Comparison ◽  
Relative Importance ◽  
Faculty Performance ◽  
Business World ◽  
The Face ◽  
Hierarchy Process ◽  
Rule Out

An increasingly rapid technological progress in the era of globalization in the business world, so do not rule out the possibility that a decision-making is something that is very vital in determining the decisions to be taken in the face of competitive business world. Decision making can be influenced by several aspects, this can affect the speed of decision making by the decision maker in which decisions must be quick and accurate. Lecturer Performance Assessment Using the Analytical Hierarchy Process is a decision support system that aims to assess faculty performance according to certain criteria. This system of faculty performance appraisal criteria to map a hierarchy, where each hierarchy will be performed pairwise comparison, the pairwise comparisons between criteria, so to get a comparison of the relative importance of criteria with each other. The results of this comparison is then analyzed to obtain the priority of each criterion. Once completed and performed an assessment of alternative options to be compared and calculated to obtain the best alternatives according to established criteria.

scholarly journals The Pornography “Rebooting” Experience: A Qualitative Analysis of Abstinence Journals on an Online Pornography Abstinence Forum

2021 ◽  
Author(s):  
David P. Fernandez ◽  
Daria J. Kuss ◽  
Mark D. Griffiths
Keyword(s):  
Behavioral Strategies ◽  
Negative Consequences ◽  
Online Forums ◽  
Online Pornography ◽  
Support Resources ◽  
Pornography Use ◽  
Perceived Effects ◽  
The Right ◽  
Number Of Individuals ◽  
Rule Out

AbstractA growing number of individuals using online forums are attempting to abstain from pornography (colloquially termed “rebooting”) due to self-perceived pornography-related problems. The present qualitative study explored phenomenological experiences of abstinence among members of an online “rebooting” forum. A total of 104 abstinence journals by male forum members were systematically analyzed using thematic analysis. A total of four themes (with a total of nine subthemes) emerged from the data: (1) abstinence is the solution to pornography-related problems, (2) sometimes abstinence seems impossible, (3) abstinence is achievable with the right resources, and (4) abstinence is rewarding if persisted with. Members’ primary reasons for initiating “rebooting” involved desiring to overcome a perceived addiction to pornography and/or alleviate perceived negative consequences attributed to pornography use, especially sexual difficulties. Successfully achieving and maintaining abstinence was typically experienced to be very challenging due to habitual behavior patterns and/or cravings triggered by a multiplicity of cues for pornography use, but a combination of internal (e.g., cognitive-behavioral strategies) and external (e.g., social support) resources made abstinence attainable for many members. A range of benefits attributed to abstinence by members suggest that abstaining from pornography could potentially be a beneficial intervention for problematic pornography use, although future prospective studies are needed to rule out possible third variable explanations for these perceived effects and to rigorously evaluate abstinence as an intervention. The present findings shed light on what the “rebooting” experience is like from members’ own perspectives and provide insights into abstinence as an approach for addressing problematic pornography use.

scholarly journals Solitary Plasmacytoma in the Mandible Resembling an Odontogenic Cyst/Tumor

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Fatemeh Rezaei ◽  
Hesamedin Nazari ◽  
Babak Izadi
Keyword(s):  
Multiple Myeloma ◽  
Third Molar ◽  
Panoramic Radiograph ◽  
Final Diagnosis ◽  
Chief Complaint ◽  
Solitary Plasmacytoma ◽  
Oral Medicine ◽  
Bony Lesion ◽  
The Right ◽  
Rule Out

A 46-year-old male patient referred to Department of Oral Medicine, with the primary chief complaint of a painless swelling in the right side of mandibular. A panoramic radiograph revealed a well-defined, multilocular radiolucent bony lesion with thin and straight septa in the right side of mandible extending from distal of canine to mesial of third molar. Histological examination showed a solid proliferation of atypical plasmacytoid cells, which was indicative of plasmacytoma. A systemic workup for the final diagnosis was performed to rule out multiple myeloma.

Deriving managerial implications through SERVQUAL gap elasticity in UAE banking

2018 ◽  
Vol 35 (4) ◽  
pp. 940-964 ◽  
Author(s):  
Mukesh Kumar ◽  
K.S. Sujit ◽  
Vincent Charles
Keyword(s):  
United Arab Emirates ◽  
Structural Equation ◽  
Service Providers ◽  
Traditional Approach ◽  
Equation Modeling ◽  
Relative Importance ◽  
Linear Regression Models ◽  
Content Type ◽  
Managerial Implications ◽  
The Right

Purpose The purpose of this paper is to propose the microeconomics concept of elasticity to estimate the SERVQUAL gap elasticity to derive important insights for service providers to develop the right strategies to bridge the overall gap in service. Design/methodology/approach The dimensions of SERVQUAL adopted from Parasuraman et al. (1988) and Kumar et al. (2009) are first verified for their unidimensionality using structural equation modeling and reliability in the context of United Arab Emirates banking industry. Furthermore, the technique of dominance analysis is used to derive the relative importance of dimensions for different groups of banks. Finally, the stepwise log-linear regression models are used to estimate the gap elasticity to measure the responsiveness of the overall SERVQUAL gap to a change in customers’ perception on different dimension. Findings The results reveal that the dimension which is prioritized as the most important dimension need not to be the one to be targeted under the resource constraint to react faster to the changes of customers’ banking behavior. Originality/value This is probably the first attempt to examine the service quality through gap elasticity. This method is especially useful when the traditional approach to measure relative importance of critical factors fails to clearly discriminate between two or more dimensions, which, in turn, may lead to failure in decision making to choose the right strategies to bridge the overall gap in the service.

Strangulated Morgagni hernia masquerading as an acute coronary syndrome

2021 ◽  
Vol 14 (7) ◽  
pp. e244045
Author(s):  
May Honey Ohn ◽  
Jun Rong Ng ◽  
Theviga Neela Mehan ◽  
Ng Pey Luen
Keyword(s):  
Acute Coronary Syndrome ◽  
Chest Pain ◽  
Surgical Repair ◽  
Bleeding Risk ◽  
Emergency Laparotomy ◽  
Morgagni Hernia ◽  
X Ray ◽  
Coronary Syndrome ◽  
The Right ◽  
Rule Out

Morgagni hernia is the rarest type of congenital diaphragmatic hernia, which can present late in adulthood. Here, we report a case of Morgagni hernia in an elderly woman who presented as an acute coronary syndrome with raised troponin level. X-ray of the chest (CXR) showed air–fluid level in the right lower hemithorax with loss of right diaphragmatic outline and subsequently confirmed strangulated Morgagni hernia with CT. She was treated with emergency laparotomy to reduce the hernia content and surgical repair with mesh done. In conclusion, Troponin can be falsely positive in Morgagni hernia patients, possibly due to strain on the heart by herniated bowel contents. Basic imaging such as a (CXR) is useful in the case of chest pain to rule out the non-cardiac causes. Although ‘time is the myocardium’ in the setting of all cases of chest pain with raised troponin, CXR should be done before treatment that poses bleeding risk and unnecessary delay in laparotomy.

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