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The genesis of Feynman's original approach to QED is reviewed. The main ideas of his original presentation at the Pocono Conference are discussed and compared with the ones involved in his action-at-distance formulation of classical electrodynamics. The role of the de Sitter group in Feynman's visualization of space-time processes is emphasized.

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A great effort has been devoted to formulating a classical relativistic theory of spin compatible with quantum relativistic wave equations. The main difficulty in connecting classical and quantum theories rests in finding a parameter that plays the role of proper time at a purely quantum level. We present a partial review of several proposals of classical and quantum spin theories from the pioneering works of Thomas and Frenkel, revisited in the classical BMT work, to the semiclassical model of Barut and (...) Zanghi. We show that the last model can be obtained from a semiclassical limit of the Feynman proper time parametrization of the Dirac equation. At the quantum level, we derive spin precession equations in the Heisenberg picture. Analogies and differences with respect to classical theories are discussed in detail. (shrink)

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The coronavirus disease pandemic fundamentally disrupted humans’ social life and behavior. Public health measures may have inadvertently impacted how people care for each other. This study investigated prosocial behavior, its association well-being, and predictors of prosocial behavior during the first COVID-19 pandemic lockdown and sought to understand whether region-specific differences exist. Participants from eight regions clustering multiple countries around the world responded to a cross-sectional online-survey investigating the psychological consequences of the first upsurge of lockdowns in spring 2020. Prosocial behavior (...) was reported to occur frequently. Multiple regression analyses showed that prosocial behavior was associated with better well-being consistently across regions. With regard to predictors of prosocial behavior, high levels of perceived social support were most strongly associated with prosocial behavior, followed by high levels of perceived stress, positive affect and psychological flexibility. Sociodemographic and psychosocial predictors of prosocial behavior were similar across regions. (shrink)

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La pandemia mundial del coronavirus ha supuesto una de las mayores conmociones de nuestra historia reciente y, como tal, parece obligarnos a repensar nuestros modos de organización y formas de vida e, incluso, como se propone aquí, a plantearnos cómo podríamos habitar el colapso. En este escenario incierto y desconocido, la filosofía, con sus múltiples enfoques y subdisciplinas, se presenta como un lugar privilegiado para analizar las vertiginosas transformaciones que han dado lugar a esta “nueva normalidad”. El presente monográfico aglutina (...) una serie de contribuciones realizadas por distintos investigadores e investigadoras de la Universidad de Oviedo, que han tratado de abordar la crisis sanitaria global desde diversas perspectivas filosóficas y humanísticas. Entre los temas que se estudian en estas páginas, figuran los relativos a la gestión de la pandemia y la comunicación científica sobre la misma, las relaciones entre pobreza, salud mental y suicidio o el alcance de la revalorización del mundo rural. También se utilizan las herramientas del análisis biopolítico para examinar la gestión de los cuerpos durante la pandemia a partir de tres ejes distintos: el tratamiento de los enfermos, los nuevos dispositivos de control y la gestión de la pandemia en las instituciones de encierro. Además, varios de los capítulos se ocupan explícitamente de un tema inherente a la mayoría de las reflexiones que componen este volumen: a saber, el de la necesidad de un cuestionamiento profundo de la sociedad occidental contemporánea y la insostenibilidad de su forma de vida. (shrink)

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Due to the COVID-19 pandemic, educational centers and universities in Venezuela have closed their physical plants and are migrating to emergency remote education to continue with academic programs. This empirical study aimed to analyze the predictive capacity of academic self-efficacy and emotional intelligence skills on each of the dimensions of psychological well-being. We employed a cross-sectional predictive design. The sample comprised 277 university students, of which 252 were female. Their ages ranged from 18 to 45 years, with a mean of (...) 20.35. Non-probabilistic chance sampling was used. For data collection, we used an anonymous online form, contacted students by mail, and invited them to participate in the study. Questionnaires were available between 217 and 227 days of decreed quarantine in Venezuela. The results indicated average levels of academic self-efficacy, emotional intelligence: clarity, attention y repair, and psychological well-being. We found differences according to sex and age, specifically in emotional regulation and in bonds of psychological well-being favoring men, respectively. Regarding age, statistically significant differences were found in the group of students older than 21 years with higher perception of psychological well-being and in each of its dimensions. Emotional intelligence and academic self-efficacy were found to be significant predictors of psychological well-being and its dimensions, specifically on control, links, projects, acceptance, and total well-being. It was concluded that emotional intelligence and academic self-efficacy are protective psychological resources of psychological well-being that should be promoted at university to mitigate the negative effects of the pandemic on the mental health of young people. (shrink)

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The present paper argues that the standardised treatment of disaster research and practice perpetuates the production of systematic epistemic injustices against victims of disasters. On the one hand, disaster victims are often prevented from contributing with their opinions and knowledge to the processes of disaster mitigation and disaster conceptualisation. On the other hand, disaster victims tend to lack the hermeneutical resources to make sense of their experiences intelligibly, due to the existence of significant hermeneutical gaps in the hegemonic terminology on (...) the matter. I argue that both forms of epistemic injustice, the testimonial and the hermeneutical, are sustained by an epistemic privilege between the Global North and the Global South in matters of disasters. The second group comprises what I categorise generally as ‘disaster victims’. I identify two forms of structural prejudice that operate against disaster victims: one is the ‘non-expert’ prejudice, and the other is the colonial prejudice. Finally, because of the intercultural nature of disaster environments, I discuss the field of ‘multicultural competencies’ as a useful form of unveiling and counteracting the epistemic injustices contained in both disaster theory and practice. (shrink)

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Literature on epistemic injustice has grown tremendously as an increasingly rich and diverse body of work in recent years. From the point of view of intercultural and anticolonial discussions, contemporary contributions have also helped to illuminate how epistemic injustice and other forms of cultural domination might be related to essential processes within the structures of colonial and racial supremacy. -/- This proposal aims to contribute to such relevant and illuminating discussions by focusing on the role that language and culture might (...) have in phenomena of epistemic injustice, particularly, hermeneutical injustice. Despite the central role played by semantics in epistemic injustice studies, the question about whether certain languages could also themselves be the recipients of epistemic injustice has been rather undertheorized. Simultaneously, recent movements to advocate for minority language rights, such as the Linguistic Human Rights Movement (LHR), raise important questions in this connection. -/- In the present paper, I argue that attending to the intercultural context reveals a new sort of hermeneutical injustice, one that, surprisingly, has never been articulated before. In particular, I am referring to a kind of HI that is essentially “linguistic” and “culture-specific”. I will be presenting two different subtypes for this kind of hermeneutical injustice: The first concerns the possibility of considering certain languages themselves as genuine objects of hermeneutical injustice, while the second has to do with certain specific culturally-established expressions or forms of talking. (shrink)

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From the fifties on, the region of middle Magdalena (Colombia), is going to live some specitic circunstantes that will provide their people with mecanisms in order to resolve a chain of vital contlicts they were involved in. Their voices will sound and will lead us, through their personal stories, to the widest scerie in their region and country. The human experiences that will be exposed here can be considered as "lives in straist". They will be existentes marked by suffering, extreme (...) violente, frighteness in short, but also by generousness and the wish of living with dignity. (shrink)

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Las tecnologías digitales están transformando el ocio y la manera en la que se organiza. A pesar de su importancia, son escasos los trabajos que han abordado su estudio desde el mundo académico. En este artículo realizamos una revisión extensa de la literatura sobre ocio y tecnologías digitales con el objeto de contribuir al conocimiento elaborando un marco interpretativo del ocio digital. Proponemos que las tecnologías digitales aportan una nueva dimensión al ocio que altera sus propiedades dicotómicas tradicionales, situando a (...) individuos y empresas entre una comprensión holística o separada de los mundos naturales y los construidos digitalmente. En el primer caso se borran los límites entre las propiedades dicotómicas del ocio y el trabajo, no así en el segundo. Una u otra concepción se evidencia en los diferentes grados en los que las transformaciones tienen lugar entre los individuos y en cómo las empresas resuelven los retos que aparecen. (shrink)

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The literature has recognised the fundamental role of teaching business ethics to students earning business administration degrees, but it is hard to find a methodology for teaching this topic successfully. We propose a new management tool—evidence-based administration—for the study of business ethics. The method developed on the basis of this management tool provides a practical vision to the students, motivates them, and favours the development of multiple facets of their education.

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La agroecología tiene como objetivo el conocimiento de los elementos y procesos claves en el funcionamiento de los agrosistemas, para su eficaz gestión en armonía con el ambiente. La protección vegetal ha sido enfocada tradicionalmente, bajo el concepto de lucha y control, utilizando arsenales químicos o biológicos y, en estos momentos, biotecnológicos. La aplicación de criterios ecológicos en protección vegetal ha permitido desarrollar procesos como la biofumigación, fundamentada en la utilización de los gases resultantes de la biodescomposición de la materia (...) orgánica para el manejo de organismos patógenos de los vegetales. Es de esperar que el futuro de la agricultura muestre una mayor preocupación por el ambiente, la conservación de los recursos naturales, la salud de las personas y se destaque su contribución a la reducción de la pobreza, así como su aportación al desarrollo de los agrocombustibles. (shrink)

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The main purpose of this study was to analyze the presence and current situation of the game of skittles throughout the northern route of the Camino de Santiago. Thus, we considered its current practice, modalities, where it is played, and its different manifestations as an informal and formal game, comparing it with other traditional games on this pilgrimage route. To do this, a mixed qualitative-quantitative study was designed with 89 participants, constituting an informant for each municipality through which the Northern (...) Way passes. An ad hoc questionnaire was used for the data collection, which was processed through content analysis by expert judges and by using the IBM-SPSS statistical package. The results of the study show notable skittles activity on the Northern Camino, reflected in the number of skittles alleys, the number of clubs, associations, and peñas participating in federated leagues, and the wide range of varieties of skittles currently active on the Camino. The relationship between skittles and local culture, both symbols of identity in these northern Spanish regions, made it possible to preserve the traditional heritage in these places, keeping it alive today, despite the push toward new and more attractive leisure and sport trends. (shrink)

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What if human joy went on endlessly? Suppose, for example, that each human generation were followed by another, or that the Western religions are right when they teach that each human being lives eternally after death. If any such possibility is true in the actual world, then an agent might sometimes be so situated that more than one course of action would produce an infinite amount of utility. Deciding whether to have a child born this year rather than next is (...) a situation wherein an agent may face several alternatives whose effects could well ramify endlessly on such suppositions, for the child born this year would be a different person—one who preferred different things, performed different actions, and had different descendants—from a child born next year. It has recently been suggested that traditional utilitarianism stumbles on such cases of infinite utility. Specifically, utilitarianism seems to require, for its application, that all experience of pleasure and pain cease at some time in the future or asymptotically approach zero.2 If neither of these conditions holds, then the utility produced by each of two alternative actions may turn out to be infinite, and utilitarianism thus loses its ability to discriminate morally between them. (shrink)

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This article attempts to show the importance of the concept of superstition in understanding a range of psychological problems. With this aim, we critically analyze several constructs that, without actually using the term “superstition,” concern this phenomenon and its role in the development of mental disorders. First we discuss “Thought–Action Fusion” and “magical thinking,” two concepts from the cognitive tradition that view superstition as basically an ideational phenomenon. Second, we look at “Experiential Avoidance,” a post-Skinnerian concept that understands superstition as (...) a type of avoidance behavior for certain private events. Third, we discuss superstition as an emotional phenomenon, in particular, Jean-Paul Sartre’s phenomenological analysis of emotions as magical operations. Finally, we review a cultural approach to superstition and its influence on psychopathology. In this perspective, superstition is seen as a cultural form linked to the historical–social context, which is fostered by certain social practices or institutions, including (perhaps surprisingly) certain features of modernity. (shrink)

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In this paper we introduce a formalism for single-agent decision making that is based on Dynamic Argumentation Frameworks. The formalism can be used to justify a choice, which is based on the current situation the agent is involved. Taking advantage of the inference mechanism of the argumentation formalism, it is possible to consider preference relations, and conflicts among the available alternatives for that reasoning. With this formalization, given a particular set of evidence, the justified conclusions supported by warranted arguments will (...) be used by the agent’s decision rules to determine which alternatives will be selected. We also present an algorithm that implements a choice function based on our formalization. Finally, we complete our presentation by introducing formal results that relate the proposed framework with approaches of classical decision theory. (shrink)

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In lieu of an abstract, here is a brief excerpt of the content:Defending a Phenomenological–Behavioral Perspective: Culture, Behavior, and ExperienceMarino Pérez-Álvarez (bio), José M. García-Montes (bio), Adolfo J. Cangas (bio), and Louis A. Sass (bio)KeywordsBehavior, contextual phenomenology, culture, experienceWe should like to express our sincere thanks to all the authors for their commentaries on our articles. Given the restrictions of space (a limitation they too had to contend with), we can only respond to a few aspects of their interesting remarks. (...) We shall reply of course on the basis of our own approach—an approach that sets out to integrate culture, behavior, and experience, and that might be termed contextual phenomenology, phenomenological behaviorism, or perhaps most accurately (albeit more awkwardly), the phenomenological–behavioral perspective.In her commentary, Ibáñez-Guerra (2008), referring to the target articles “Phenomenology and behaviorism” (Pérez-Álvarez, Sass, and Cangas 2008) and “The role of superstition in psychopathology” (García-Montes et al. 2008), wonders whether our maintaining of the spirit of Skinner, as well as our recourse to phenomenology, might not themselves represent forms of superstitious behavior. She points out that it is not always a good idea to put new wine in old barrels. For her, the new wine and new barrels would be represented by social constructivism, of which she is reminded by some aspects of our work. But in making her own case, Ibáñez-Guerra (2008) reveals certain common prejudices concerning behaviorism, prejudices that have apparently persisted even after reading our article. Thus, for example, she does not see operant behavior as incorporating intentionality (what, in the target article, is presented in terms of final causality), because she assumes that intentionality would necessarily imply a mentalist and dualist notion involving a supposed internal mental entity that causes behavior. Skinner (1974) himself noted and rejected this very assumption in a passage that clearly distinguishes his own approach from what he calls a “stimulus-response formula”: “Possibly no charge,” he wrote,is more often leveled against behaviorism or a science of behavior than that it cannot deal with purpose or intention. A stimulus-response formula has no answer, but operant behavior is the very field of purpose and [End Page 281] intention. By its nature it is directed toward the future: a person acts in order that something will happen, and the order is temporal.(pp. 55–6)The place Skinner gives to intentionality and purpose is elaborated in our target article.Furthermore, Ibáñez-Guerra (2008) assumes that, on methodological grounds, Skinner rejects all that is not observable, or at least that cannot be operationalized. This, however, is simply incorrect, at least as regards Skinner’s radical behaviorism. As the reader may recall, radical (as opposed to methodological) behaviorism is neither operationalist nor does it reject private or subjective events because of their unobservability. Indeed, Skinner specifically acknowledges that such events are in fact observable—at least for one person: the subject him- or herself. The question for Skinner is to understand how the part of the world that is only observable and experiential for oneself is constructed or formed. In the end, it turns out that radical behaviorism is more radical, in the Aristotelian ontological sense (see Pérez-Alvarez, Sass, and García-Montes 2008), than post-modern constructionism. Indeed, as we remarked, radical behaviorism can still surprise us today. Similarly, phenomenology is starting to be missed in the clinical context (Andreasen 2007). We believe that radical behaviorism and phenomenology, mutually readjusted, are in fact excellent wines for the times we live in—if only we knew how to appreciate them.In their commentary on “Phenomenology and behaviorism: A mutual readjustment,” Fletcher and Hayes (2008) argue that the philosophy and theory of Acceptance and Commitment Therapy (ACT)/Relational Frame Theory (RFT) already contain the salutary aspects of phenomenology that we highlight in our target article. Their insistence on reducing the affinities we find between phenomenology and behaviorism to ACT/RFT consists, in our view, in a scientific–technical argument that is more scientistic than strictly philosophical in nature. Their insistence on the scientific–technical argument itself implies an unclarified philosophical assumption. On what grounds do experimental data constitute the last word? Has... (shrink)

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Background: Nurses who practice limitation of therapeutic effort become fully involved in emotionally charged situations, which can affect them significantly on an emotional and professional level. Objectives: To describe the experience of intensive care nurses practicing limitation of therapeutic effort. Method: A qualitative, phenomenological study was performed within the intensive care units of the Madrid Hospitals Health Service. Purposeful and snowball sampling methods were used, and data collection methods included semi-structured and unstructured interviews, researcher field notes, and participants’ personal letters. (...) The Giorgi proposal for data analysis was used on the data. Ethical considerations: This study was approved by the Ethical Research Committee of the relevant hospital and by the Ethics Committee of the Rey Juan Carlos University and was guided by the ethical principles of voluntary enrollment, anonymity, privacy, and confidentiality. Results: In total, 22 nurses participated and 3 themes were identified regarding the nurses’ experiences when faced with limitation of therapeutic effort: (a) experiencing relief, (b) accepting the medical decision, and (c) implementing limitation of therapeutic effort. Conclusion: Nurses felt that, although they were burdened with the responsibility of implementing limitation of therapeutic effort, they were being left out of the final decision-making process regarding the same. (shrink)

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As a result of recent corporate scandals, several rules have focused on the role played by Boards of Directors on the planning and monitoring of corporate codes of ethics. In theory, outside directors are in a better position than insiders to protect and further the interests of all stakeholders because of their experience and their sense of moral and legal obligations. Female directors also tend to be more sensitive to ethics according to several past studies which explain this affirmation by (...) early gender socialization, the fact that women are thought to place a greater emphasis on harmonious relations and the fact that men and women use different ethical frameworks in their judgments. The goal of this paper is to determine the influence of these characteristics of the Board in terms of promoting and hindering the creation of a code of ethics. Our findings show that a greater number of female directors does not necessarily lead to more ethical companies. Moreover, within Europe as a continent, board ownership leads to an entrenchment of upper-level management, generating a divergence between the ethical interests of owners and managers. In light of this situation, the presence of independent directors is necessary to reduce such conflicts. (shrink)

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El estallido de una epidemia o una pandemia es siempre un momento de amenaza, emergencia e incertidumbre. Cuando la salud y la vida de las personas se pone en peligro se requieren respuestas urgentes y coordinadas por parte de los agentes estatales a nivel nacional, regional y global que tengan el potencial de contener la pandemia y evitar su propagación. De esta situación de emergencia y de continuos cambios en las normas que imponen nuevas restricciones, obligaciones y responsabilidades a los (...) ciudadanos, se deriva dilema sobre el equilibrio entre la protección del derecho a la salud y otros derechos económicos, sociales y culturales. (shrink)

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El presente artículo ofrece una solución al problema metaético que florece en la ética humeana a propósito de la conciliación entre el cognitivismo derivado de la exigencia del General Point of View y el internalismo moral que se deriva de su argumento de la motivación. Asumiendo una descripción evolutiva en la construcción de la perspectiva evaluativa representada por el General Point of View, al tiempo que un proyectivismo epistemológico para los juicios causales que conectan las motivaciones, acciones y utilidad de (...) los distintos caracteres que surgen en el origen de la justicia, se puede conciliar -sin riesgo para la consistencia del planteamiento humeano- la existencia de individuos capaces de generar juicios morales cognitivos que derivan en una motivación moral internalista, identificada con el sentido del deber, e individuos con motivaciones claramente externalistas basadas en el uso instrumental de la razón. (shrink)

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This work begins by proposing the need for exploring the mode of being of mental disorders. It is a philosophical study in an Aristotelian perspective, with special emphasis on the anthropological–cultural dimension. It is difficult for such an inquiry to be carried out from within psychiatry or clinical psychology, committed as these fields are to their own logic and practical conditions. The issues are, in any case, more ontological than strictly clinical in nature. We therefore turn to Aristotle, and specifically (...) his doctrine of the four “causes,” to flesh out the social and cultural dimensions of mental disorders. In accordance with the present analysis, the material cause of disorders would be found in the contingencies of life; the formal cause would pertain primarily to the way clinical conditions themselves can serve as models of ‘being ill’ in our society; the efficient cause would correspond to the patients themselves, understood as active (albeit less than fully conscious) agents as well as to the pharmaceutical industry and the mass media; the final cause would be found in different adaptive functions served by the disorder. We conclude that the “mode of being” of most (if not all) mental disorders—in particular, their status as mental disorders—can often have more to do with cultural forms than with biological factors. (shrink)

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Background Physicians play a fundamental role in the care of patients at the end of life that includes knowing how to accompany patients, alleviate their suffering and inform them about their situation. However, in reality, doctors are part of this society that is reticent to face death and lack the proper education to manage it in their clinical practice. The objective of this study was to explore the residents’ concepts of death and related aspects, their reactions and actions in situations (...) pertaining to death in their practice, and their perceptions about existing and necessary training conditions. Methods A qualitative approach was used to examine these points in depth based on interviews conducted with seven oncology residents. Results Participants do not have a clear concept of death and, although it is seen as a common phenomenon, they consider it an enemy to beat. The situations to which respondents react more frequently with frustration and sadness after the death of patients were when they felt emotionally involved, if they identify with the patient, in cases of pediatric patients and with patients who refuse treatment. To deal with death, participants raise barriers and attempt to become insensitive. Although residents in this study recognize the importance of training to learn how to better deal with death, it seems they are not fully invested in reaching more of it. Conclusions Participants face death in a daily basis without the necessary training, which appears to impact them more than they are willing to accept. They do not achieve their goals managing situations regarding death as well as they assume they do. Despite recognizing the need of more training and support for better coping with death, they prefer to continue to learn from their experience. Trial registration Not applicable. (shrink)

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