395 resultados para reciprocity.
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This study assesses the industrial relations application of the „loyalty-exit-voice‟ proposition. The loyalty concept is linked to reciprocal employer-employee arrangements and examined as a job attribute in a vignette questionnaire distributed to low and medium-skilled employees. The responses provided by employees in three European countries indicate that reciprocal loyalty arrangements, which involve the exchange of higher effort for job security, are one of the most desirable job attributes. This attribute exerts a higher impact on the job evaluations provided by unionised workers, compared to their non-union counterparts. This pattern is robust to a number of methodological considerations. It appears to be an outcome of adaptation to union mediated cooperation. Overall the evidence suggests that the loyalty-job evaluation profiles of unionised workers are receptive to repeated interaction and negative shocks, such as unemployment experience. This is not the case for the non-union workers. Finally, unionised workers appear to „voice‟ a lower job satisfaction, but exhibit low „exit‟ intentions, compared to the non-unionised labour.
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This paper provides a rationale for group support for political violence when violence does not provide a material benefi t. A theory of fairness is adopted to demonstrate that although group violence may not be the equilibrium of a material game it may be a fairness equilibrium in a game containing psychological payoffs. For this to happen the material stakes must be perceived as low and psychological payoffs are expressive. Although the material stakes are actually high, members of each group may choose expressively to support the use of violence because the probability of being decisive is low. The paper also considers the possibility of peace emerging as a fairness equilibrium. This can only happen if each group perceives the other as making some sacrifi ce in choosing peace.
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We provide field experimental evidence of the effects of monitoring in a context where productivity is multi-dimensional and only one dimension is monitored and incentivised. We hire students to do a job for us. The job consists of identifying euro coins. We study the effects of monitoring and penalising mistakes on work quality, and evaluate spillovers on non- incentivised dimensions of productivity (punctuality and theft). We .nd that monitoring improves work quality only if incentives are large, but reduces punctuality substantially irrespectively of the size of incentives. Monitoring does not affect theft, with ten per cent of participants stealing overall. Our setting also allows us to disentangle between possible theoretical mechanisms driving the adverse effects of monitoring. Our .ndings are supportive of a reciprocity mechanism, whereby workers retaliate for being distrusted.
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Concerns for fairness, workers' morale and reciprocity infuence firms' wage setting policy. In this paper we formalize a theory of wage setting behavior in a simple and tractable model that explicitly considers these behavioral aspects. A worker is assumed to have reference-dependent preferences and displays loss aversion when evaluating the fairness of a wage contract. The theory establishes a wage-effort relationship that captures the worker's reference-dependent reciprocity, which in turn in uences the firm's optimal wage policy. The paper makes two key contributions: it identifies loss aversion as an explanation for a worker's asymmetric reciprocity; and it provides realistic and generalized microfoundation for downward wage rigidity. We further illustrate the implications of our theory for both wage setting and hiring behavior. Downward wage rigidity generates several implications for the outcome of the initial employment contract. The worker's reference wage, his extent of negative reciprocity and the firms expectations are key drivers of the propositions derived.
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Wild type and mutant toxins of Bacillus thuringiensis delta-endotoxins were examined for their binding to midgut brush border membrane vesicles (BBMV). CryIAa, CryIAb, and CryIAc were examined for their binding to Gypsy moth (Lymantria dispar) BBMV. The binding of CryIAa and CryIAc was directly correlated with their toxicity, while CryIAb was observed to have lower binding than expected from its toxicity. The latter observation confirms the observation of Wolfersberger (1990). The "rule" of reciprocity of binding and toxicity is apparently obeyed by CryIAa and CryIAc, but broken by CryIAb on L. dispar. Alanine substitutions were made in several positions of the putative loops of CryIAa to test the hypothesis that the loops are intimately involved in binding to the receptor. The mutant toxins showed minor shifts in heterologous binding to Bombyx mori BBMV, but not enough to conclude that the residues chosen play critical roles in receptor binding.
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In simultaneous hermaphrodites, gender conflicts that arise from two potential mates sharing the same gender preference may be solved through conditional reciprocity (or gamete trading). Conditional reciprocity had initially been considered widespread, but recent studies suggest that its real occurrence may have been overestimated, possibly because most mating observations have been performed on isolated pairs of individuals. Some resulting patterns (e. g., non-random alternation of sexual roles) were indeed compatible with conditional reciprocity but could also have stemmed from the two partners independently executing their own mating strategy and being experimentally enforced to do so with the same partner. Non-random alternation of gender roles was recently documented in the simultaneously hermaphroditic freshwater snail Physa acuta. To distinguish between conditional and unconditional gender alternations, we observed copulations of individually marked snails reared at three contrasted densities. We showed that density affected the overall frequency of copulations during the first 2 days of the experiment with high-density boxes showing more copulations than low density boxes, but it did not affect gender alternation patterns. A change in gender role was observed more often than expected by chance over two successive copulations by the same individual, confirming previous studies. However, gender switches did not preferentially occur with the same partner. We conclude that gender alternation is not due to conditional reciprocity in P. acuta. It may rather stem from each individual having a preference for gender alternation. We finally discuss the mechanisms and the potential extent of this unconditional reciprocity.
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The threat of punishment usually promotes cooperation. However, punishing itself is costly, rare in nonhuman animals, and humans who punish often finish with low payoffs in economic experiments. The evolution of punishment has therefore been unclear. Recent theoretical developments suggest that punishment has evolved in the context of reputation games. We tested this idea in a simple helping game with observers and with punishment and punishment reputation (experimentally controlling for other possible reputational effects). We show that punishers fully compensate their costs as they receive help more often. The more likely defection is punished within a group, the higher the level of within-group cooperation. These beneficial effects perish if the punishment reputation is removed. We conclude that reputation is key to the evolution of punishment.
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To understand the human capacity for psychological altruism, one requires a proper understanding of how people actually think and feel. This paper addresses the possible relevance of recent findings in experimental economics and neuroeconomics to the philosophical controversy over altruism and egoism. After briefly sketching and contextualizing the controversy, we survey and discuss the results of various studies on behaviourally altruistic helping and punishing behaviour, which provide stimulating clues for the debate over psychological altruism. On closer analysis, these studies prove less relevant than originally expected because the data obtained admit competing interpretations such as people seeking fairness versus people seeking revenge. However, this mitigated conclusion does not preclude the possibility of more fruitful research in the area in the future. Throughout our analysis, we provide hints for the direction of future research on the question.
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Several internally fertilizing hermaphroditic animals can only perform one sexual role at a time. In such species, two individuals that engage in a copulation may have different interests in acting as male or female. A gender choice must be made which, if both individuals have the same preference, may give rise to a severe sexual conflict. Here we tested the hypothesis that gender choice could be influenced by mating history, using the freshwater snail, Physa acuta. We recorded the copulatory behaviour of 240 pairs composed of a focal individual and a partner, each either short- or long-isolated. We found that the time to the first copulation was unaffected by isolation status, suggesting that first contacts in this species are random processes. In contrast, the duration of copulations and the frequency of rejection behaviours suggested that individual gender preference switches from male biased to female biased as isolation increases. In addition, snails rejected copulations more frequently when presented to a partner with the same isolation status. Reciprocity, measured as the rate of gender swapping between the first and second copulations, was high irrespective of gender status. We suggest possible evolutionary causes for this gender preference switch and discuss its potential importance in natural population as well as its consequences for the maintenance of hermaphroditism
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Cooperation among unrelated individuals can arise if decisions to help others can be based on reputation. While working for dyadic interactions, reputation-use in social dilemmas involving many individuals (e.g. public goods games) becomes increasingly difficult as groups become larger and errors more frequent. Reputation is therefore believed to have played a minor role for the evolution of cooperation in collective action dilemmas such as those faced by early humans. Here, we show in computer simulations that a reputation system based on punitive actions can overcome these problems and, compared to reputation system based on generous actions, (i) is more likely to lead to the evolution of cooperation in sizable groups, (ii) more effectively sustains cooperation within larger groups, and (iii) is more robust to errors in reputation assessment. Punishment and punishment reputation could therefore have played crucial roles in the evolution of cooperation within larger groups of humans.
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This paper deals with the linguistic and historical relationships between Papiamentu and Upper Guinea Creole as spoken on the Santiago island of Cape Verde and in Guinea-Bissau and Casamance. In the linguistic section, the hypothesis that Papiamentu is a relexified offshoot of an early Upper Guinea Creole variety is lent support by focusing on the structural correspondences of the function words in five grammatical categories (pronouns, question words, prepositions, conjunctions and reciprocity and reflexivity). In addition, salient data from several early (18th and 19th century) Papiamentu texts is presented. The historical section provides a framework that accounts for the linguistic transfer from Upper Guinea to Curaçao in the second half of the 17th century
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We present a novel numerical approach for the comprehensive, flexible, and accurate simulation of poro-elastic wave propagation in 2D polar coordinates. An important application of this method and its extensions will be the modeling of complex seismic wave phenomena in fluid-filled boreholes, which represents a major, and as of yet largely unresolved, computational problem in exploration geophysics. In view of this, we consider a numerical mesh, which can be arbitrarily heterogeneous, consisting of two or more concentric rings representing the fluid in the center and the surrounding porous medium. The spatial discretization is based on a Chebyshev expansion in the radial direction and a Fourier expansion in the azimuthal direction and a Runge-Kutta integration scheme for the time evolution. A domain decomposition method is used to match the fluid-solid boundary conditions based on the method of characteristics. This multi-domain approach allows for significant reductions of the number of grid points in the azimuthal direction for the inner grid domain and thus for corresponding increases of the time step and enhancements of computational efficiency. The viability and accuracy of the proposed method has been rigorously tested and verified through comparisons with analytical solutions as well as with the results obtained with a corresponding, previously published, and independently bench-marked solution for 2D Cartesian coordinates. Finally, the proposed numerical solution also satisfies the reciprocity theorem, which indicates that the inherent singularity associated with the origin of the polar coordinate system is adequately handled.
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Departures from pure self interest in economic experiments have recently inspired models of "social preferences". We conduct experiments on simple two-person and three-person games with binary choices that test these theories more directly than the array of games conventionally considered. Our experiments show strong support for the prevalence of "quasi-maximin" preferences: People sacrifice to increase the payoffs for all recipients, but especially for the lowest-payoff recipients. People are also motivated by reciprocity: While people are reluctant to sacrifice to reciprocate good or bad behavior beyond what they would sacrifice for neutral parties, they withdraw willingness to sacrifice to achieve a fair outcome when others are themselves unwilling to sacrifice. Some participants are averse to getting different payoffs than others, but based on our experiments and reinterpretation of previous experiments we argue that behavior that has been presented as "difference aversion" in recent papers is actually a combination of reciprocal and quasi-maximin motivations. We formulate a model in which each player is willing to sacrifice to allocate the quasi-maximin allocation only to those players also believed to be pursuing the quasi-maximin allocation, and may sacrifice to punish unfair players.
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A tese que ora findamos visa a obtenção do grau de doutora em Educação, na Especialidade de Desenvolvimento Curricular, pelo Departamento do Currículo e Tecnologia Educativa, do Instituto de Educação e Psicologia, da Universidade do Minho. Intitulado o dualismo cultural: os luso-caboverdianos entre a escola, a família e a comunidade, o presente estudo centra-se numa abordagem crítica da escolaridade básica obrigatória, no qual procurámos compreender e explicar as condições de realização deste nível de ensino pelos jovens de ascendência caboverdiana, nascidos em Portugal, na qualidade de sujeitos biculturais em consequência da simbiose das culturas caboverdeana e portuguesa. Isto para concluirmos se na oferta do serviço educativo e de formação estão acautelados os seus direitos de cidadania e de participação na sociedade em que se encontram inseridos e a que pertencem de facto. Nesta investigação foi fundamental analisar a oferta de educação básica, entender as representações de alunos lusocaboverdeanos acerca da sua identidade cultural e das suas percepções sobre a formação académica que recebem; reconhecer representações e percepções de professores acerca da realidade educativa portuguesa, o enquadramento da multiculturalidade e a docência em turmas com alunos luso-caboverdianos, e compreender as percepções de pais e encarregados da educação caboverdeanos acerca da realidade educativa portuguesa e do enquadramento dos seus filhos na escola, para perceber se o insucesso educativo dos luso-caboverdeanos está relacionado com a condição de aluno “culturalmente diferente” ou se tem a sua origem na escola e no currículo da escolaridade obrigatória e, assim, contribuir com subsídios teóricos e práticos para o aprofundamento da problemática da multiculturalidade em Portugal, com vista à sua potenciação e normalização no sistema educativo. Estando perante uma sociedade de formação multicultural reafirmada com a colonização, justifica-se, em Portugal, a preocupação com a temática da diversidade cultural nas políticas educativas, resultante da consciencialização da manifestação da diversidade cultural no contexto escolar, podendo a sua omissão constituir num factor de insucesso educativo. Por isso, integramos nesta investigação matérias como: uma conceptualização do multiculturalismo com vista a questionar e clarificar os conceitos e as perspectivas inerentes a este fenómeno. Uma tentativa de desocultar para perceber o conteúdo simbólico e os porquês das políticas de integração das minorias etnicoculturais que, ao que parece, nos tempos que correm, por quase toda a parte, se converteram numa prioridade absoluta e inadiável. Estabelecemos uma ponte entre a génese do campo curricular e a construção de um currículo multi e/ou intercultural, merecendo devida atenção as tendências que dominam as discussões e a produção científica actuais nestes domínios. Problematizámos o currículo e identidade na escolaridade obrigatória nas dimensões inserção sociocultural, promoção da igualdade de sucesso educativo e inclusão dos sujeitos e o currículo e a educação para o exercício da cidadania numa escola que se quer plural. Neste último debatemos o conteúdo político da educação para a cidadania, as políticas educativas e curriculares e a escolaridade básica obrigatória como uma proposta que continua em aberto, por isso, passível de adequação às necessidades de uma educação da e para a diversidade. Procurámos fazer uma análise das políticas de integração socioeducativa da diversidade cultural, com destaque para o quadro legal que regula a integração das minorias étnicas na escola básica portuguesa, com particular incidência sobre as crianças pertencentes à comunidade caboverdeana nascidas em território português, procurando concluir acerca da existência, ou não, de posições e opções de políticas educativas concretas face à necessidade de dar prosseguimento à educação multicultural neste contexto. Tratou-se de uma investigação qualitativa holística, que permitiu desenvolver compreensões profundas dos fenómenos a partir das evidências reunidas, do estudo das representações dos sujeitos sobre quem recaem os resultados da investigação, mas também de sujeitos que, assim como o meio envolvente, estabelecem uma relação indirecta com os mesmos resultados. Circunscrito a um estudo de caso, a reflexão e a partilha de conhecimento e informações possibilitou desenvolver uma compreensão sobre a problemática estudada. Dos resultados obtidos, destacámos aqui que, em Portugal, apesar da absorvência da diversidade cultural nas política educativa, não se concretizou, ainda, uma proposta que, na prática, crie a reciprocidade entre as questões etnicoculturais e o sucesso e/ou insucesso educativos das minorias em educação com ganhos decisivos no combate ao insucesso e ao abandono escolar. Continua-se a desenvolver uma educação igualitarista monocultural pela via da homogeneização curricular, assente na noção de que povos e grupos podem estar em condições de igualdade se reunidos numa cultura comum. Aparentemente sob pilares democráticos, esta educação multicultural segue a concepção liberal associando essencialismo, universalismo e igualitarismo, resultando num propósito civilizacional excludente das minorias etnicoculturais. As conclusões chegadas permitem-nos defender a dessacralização do currículo nacional comum e uniforme e a defesa de uma proposta curricular baseada numa cultura científica global e necessária, de acordo com as faixas etárias e níveis de ensino, com campos de integração obrigatória de conteúdos territorializados alicerçados no interculturalismo como estratégia promotora da interacção crítica e solidária entre diferentes sujeitos e grupos culturais, permissiva da construção de identidades próprias e da confissão da diferença cultural, associada ao intraculturalismo como uma via permeabilizadora da educação democrática como garante da cidadania plena a todos os indivíduos, como condição fundamental para o estabelecimento das condições de igualdade e de garantia de sucesso em educação.
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Many authors have discussed a decline in internal labor markets and an apparent shift to a new employment contract, characterized by less commitment between employer and employee and more portable skills. These discussions occur without much evidence on what employment contract employees currently feel is fair. We perfomed quasi-experimental surveys to study when employees in the U.S. andCanada feel that layoffs are fair.Layoffs were perceived as more fair if they were due to lower product demand than if the result of employee suggestions. This result appears to be solely due to norms of reciprocity (companiesshould not punish employees for their efforts), rather than norms of sharing rents, as new technology was also considered a justification for layoffs.Consistent with theories of distributive and procedural equity, layoffs were perceived as more fair if the CEO voluntarily shared the pain. CEO bonuses due to layoffs lowered their reported fairness only slightly.Respondents in Silicon Valley were not more accepting of layoffsthan were those in Canada on average, although the justificationsconsidered valid differed slightly.