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)

La investigación propone un diseño metodológico de una escala que permite conocer el grado de satisfacción laboral en Pequeñas y Medianas Empresas (Pymes). Se basa en la teoría de higiene y motivación de Herzberg. Se integra por 15 ítems. La claridad y pertinencia de los ítems se validó con cinco expertos. Para su validez y confiabilidad se obtuvo una adecuación maestral KMO de.863. Se encontró que los resultados son significativos (X2 = 441.790, gl = 105, p =.000). El alfa de (...) Cronbach fue igual a.906. El ejercicio de prueba se realiza en Pymes de Tuxpan Veracruz, México. (shrink)

Background: COVID-19 has taken many lives worldwide and due to this, millions of persons are in grief. When the grief process lasts longer than 6 months, the person is in risk of developing Complicated Grief Disorder. The CGD is related to serious health consequences. To reduce the probability of developing CGD a preventive intervention could be applied. In developing countries like Mexico, the psychological services are scarce, self-applied interventions could provide support to solve this problem and reduce the health impact (...) even after the pandemic has already finished.Aims: To design and implement a self-applied intervention composed of 12 modules focused on the decrease of the risk of developing CGD, and increasing the life quality, and as a secondary objective to reduce the symptomatology of anxiety, depression, and increase of sleep quality. The Intervention Duelo COVID follows the principles of User Experience and is designed according to the needs and desires of a sample of the objective participants, to increase the adherence to the self-applied intervention, considered one of the main weaknesses of online interventions.Methods: A Randomized Controlled Trial will be conducted from the 22nd of December of 2020 to the first of June 2021. The participants will be assigned to an intervention with elements of Cognitive Behavioral Therapy, Acceptance and Commitment Therapy, Mindfulness and Positive Psychology. The control group will be a wait-list condition, that will receive the intervention 1.5–2 months after the pre-measurement were taken. The Power Size Calculation conducted through G*Power indicated the need for a total of 42 participants, which will be divided by 21 participants in each group. The platform will be delivered through responsive design assuring with this that the intervention will adapt to the screen size of cellphones, tablets, and computers.Ethics and Dissemination: The study counts with the approval of the Research Ethics Committee of the Autonomous University of Ciudad Juárez, México, and it is registered in Clinical Trials. The article is sent and registered in clinical trials before the recruitment started. The results will be reported in future conferences, scientific publications, and media. (shrink)

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)

En forma de síntesis reflexiva sobre la vida y la obra de Adolfo Sánchez Vázquez, el trabajo responde in inicialmente a una solicitud de la revista Casa de las Américas. Esta revista-institución había pedido, en justo homenaje a este genuino marxista, un comentario a dos volúmenes que celebraban desde México, con inteligente selección, abierta a la controversia, su 80 aniversario (1995). Se trataba de los libros Adolfo Sánchez Vázquez: los trabajos y los días y En torno a la obra de (...) Adolfo Sánchez Vázquez, editados por Federico Álvarez y Gabriel Vargas Lozano, respectivamente. Publicado originalmente con el título “La empecinada herejía de Adolfo Sánchez Vázquez” en la mencionada revista (núm. 203, La Habana,1996, pp.142-147), el texto fue revisado y actualizado para la presente edición. (shrink)

Censurado durante la última década, sale finalmente a la luz Biografía de las ideas, de Isaiah Berlin. El libro pone de relieve el modo en que el sector liberal-conservador más poderoso, con sede en Oxford, ha construido la ficción en torno a la figura de Isaiah Berlin. Sir Isaiah Berlin es conocido como una lumbrera del pensamiento político del siglo XX, uno de los máximos exponentes intelectuales del liberalismo democrático, un pensador moralmente comprometido con la causa de la libertad y (...) la lucha contra el totalitarismo. El lector podrá comprobar que la imagen que se atribuye a Isaiah Berlin es una mitificación, una ficción forjada con el propósito de defender una serie de intereses académicos (y reforzar así la marca Oxford), políticos (en torno al sector liberal-conservador anglosajón) y nacionales (al objeto de cantar la leyenda de una Corona británica comprometida –así dicen– por la defensa de la democracia Occidental). Como Research Fellow en la Universidad de Oxford, el autor ha tenido oportunidad de examinar esta realidad y ver con sus propios ojos cómo los liberal-conservadores fabrican sus mitos. Las conclusiones de este estudio no dejarán indiferentes ni a académicos –principalmente, del área de Historia de las Ideas, y Teoría Política y Moral–, ni a escritores y políticos como el Premio Nobel Mario Vargas Llosa o la marquesa Cayetana Álvarez de Toledo, auto-denominados liberal-conservadores, porque derrumba un pilar de su religión. (shrink)

En el siguiente artículo tengo como finalidad aplicar el concepto de violencia, estudiado desde distintos abordajes de la psicología, como herramienta teórica para analizar la novela La ciudad y los perros (1963) del Premio Nobel de Literatura Mario Vargas Llosa. El tratamiento que tendrá esta investigación se basará en dos líneas temáticas que segmentan la actuación de un agresor o un violento: las causas y las repercusiones generadas. La primera abordará siete conceptos derivados, como el hecho de aprender a (...) ser agresivo por observación hacia los demás, contar con una explicación biológica, justificar la conducta por el entorno social, criticar la participación de la Policía en la sociedad, usar la violencia sin utilidad, emplear actores de riesgo y seguir permitiendo el mal. La segunda explicará las repercusiones de la violencia, en tanto agresor como de la víctima, considerando los aportes de Ángeles Álvarez Álvarez. (shrink)

El texto constituye una reseña-comentario a dos volúmenes que celebraban desde México, con inteligente selección, abierta a la controversia, el 80 aniversario (1995) del destacado pensador hispano-mexicano. Se trataba de los libros Adolfo Sánchez Vázquez: los trabajos y los días y En torno a la obra de Adolfo Sánchez Vázquez, editados por Federico Álvarez y Gabriel Vargas Lozano, respectivamente. El título del comentario hace alusión a la permanente actitud de principios de Sánchez Vázquez, quien mantuvo, primero, una actitud (...) crítica ante el marxismo ortodoxo y dogmático que se difundía desde la URSS y el llamado socialismo real y, después, asumió estoicamente la defensa del marxismo cuando aquellos habían desaparecido. (shrink)

This paper proposes freedom as the condition of possibility for the construction of trust in human relationships. The methodology used is a review of the scientific literature of the most recent moral and political philosophy. As a result of the dialogue between different positions, it is discovered that freedom, despite being present in the act of trust, is forgotten in the discussion around trust, a forgetfulness that has as its main causes the assumption that trust is natural and the confusion (...) between the propensity to trust and the act of trusting. All this leads to proposing an approach of the act of trusting that starts from the freedom of the trustee and the trustor. (shrink)

Se define “iatrofilosofía” como la disciplina traslacional entre la medicina y la filosofía que tiene un doble objetivo, teórico y práctico. Se presenta un modelo de iatrofilosofía práctica aplicado al dolor crónico asociado a depresión y estrés —depresalgia— que expande al ámbito médico general la psicoterapia Fenomenológica, Hermenéutica Dinámica (PHD). Se parte del modelo general de la triada médica — patología (disease), padecimiento (illness) y condición de enfermo (sickness)— y, en el horizonte de la antropología de Ortega, se proponen cinco (...) metáforas nucleares: avaricia del cuerpo, angustia de circunstancia, desgarro personal, nudos personales y expropiación personal. Estas se relacionan con los mecanismos neurobiológicos de sensibilización central, alostasis y alteración del eje hipotálamo-hipófisis-suprarrenal. Se propone un proceso de recuperación personal basado en la concordia terapéutica. El análisis del dolor crónico y de otros problemas complejos de salud puede beneficiarse de metodologías filosóficas como la hermenéutica clínica. (shrink)

This paper will examine the issue of Plato’s purposes in the Sophist. First, we will shed light on the main purpose Plato might be drawing in the prologue of the dialog, where the Eleatic Stranger begins to show his philosophical status. Then, we will locate the sophist’s characterization within this main purpose, by reading the result of this characterization as an implicit παράδειγμα which prepares the execution ofthe dialectic and anticipates the defining features of an object key to this science.

El artículo analiza la cristología de Thomas Hobbes con el propósito de entender una de las principales causas de su descrito como un pensador cristiano o, incluso, ateo, lo que afecta eventualmente la validez de su teología política. El autor sostiene que si bien Hobbes hace uso de la Biblia como fundamento de su filosofía política, su recepción del cristianismo en general no es enteramente correcta, debido a que está fuertemente influenciada por su decisión política en favor del absolutismo. Esta (...) posición política lo lleva a escoger textos ad-hoc que apoyan su teoría y a rechazar otros que no lo hacen, dejando así fuera importantes aspectos del cristianismo, uno de los cuales, el más central, es la naturaleza de Jesucristo como Dios-hombre y la interpretación contractualista del federalismo judío. El artículo hace uso de estudios de reconocidos investigadores (Elazar, Pangle, Kraynak, Ratzinger entre otros) y el autor concluye que Hobbes exhibe una visión reduccionista del cristianismo que influye en su teología política. (shrink)

The precise conceptions of race de­ployed by Mexican philosophers in the first half of the twentieth century have often been poorly understood. Consequently, the specifi­cally racial components in their work have been frequently dismissed on the grounds that they were unscientific, irresponsible, and/or sloppy. I hope to show that with a sufficiently rich understanding of at least the seminal works many of these criticisms can be blunted.

El objetivo de este trabajo es analizar la salvación laica formulada por el Dios ficticio del relato “El silencio de Dios” de Juan José Arreola. Primero, se establece un recorrido por las aproximaciones críticas hechas sobre el texto arreolino. Después, se muestra mediante ejemplos la tensión existencial-religiosa que Arreola efectivamente vivenció y se identifica la presencia de esta condición en su narrativa, especialmente en el relato aquí analizado. Por último, se analiza y se intenta describir la naturaleza de la salvación (...) laica implícita en la respuesta de Dios al protagonista del relato. (shrink)

Esta investigación pone en diálogo las posiciones de Hobbes y de Spaemann respecto a la naturaleza de la confianza, para lo cual se asume una postura hermenéutica. Los principales resultados de esta arrojan que para Hobbes la confianza ha de ser aprendida, pues la desconfianza es lo primero con lo que se encuentra el ser humano; mientras que, para Spaemann, el hombre es un ser confiado y aprende a desconfiar. Como efecto de este diálogo se descubre que ambos autores tienen (...) como base para la confianza la sociabilidad humana, por lo cual se concluye que la disposición de la confianza se da en la naturaleza humana como condición de posibilidad para el acto de confiar. (shrink)

Silence is reserved for what cannot be verbally expressed. The well-known Wittgensteinian quote summarizes an established understanding of the relationship between language and silence: because language is not enough to account for reality and thinking, it must be transcended by other means of expression, like music or silence. But what if the opposite is the case and silence is not the extension but the precondition of language, the ultimate source of meaning? This paper explores how this is the phenomenological and (...) Derridean philosophical framework of Coetzee’s novels, a literary universe created from the will to signify and build singular meanings. (shrink)

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)

El artículo reconoce los aportes que la Dra. Julia V. Iribarne realizó en torno a la ética en perspectiva fenomenológica, especialmente en su obra De la ética a la metafísica. Con base en estas contribuciones se responden tres preguntas: ¿cómo la generatividad y la temporalidad se convierten en estructuras de la eticidad? ¿Cómo hay, fenomenológicamente, una metafísica en cuanto se conoce la mismidad y la alteridad trascendentalmente? ¿Es Dios para la ética un fictum o un factum? A modo de colofón (...) se alude a la centralidad de la mente y el esclarecimiento de los estados mentales como avance en el fundamento y despliegue de la ética.This article identify the contributions that Dra. Julia V. Iribarne made around ethics in phenomenological perspective and especially her work Ethics in the way of metaphysics. According to her contributions we could answer these three questions: How generativity and temporality becomes structures of the ethics? How is possible, phenomenologically, a metaphysics if we know self-hood and otherness transcendentally? Is God a fictum or factum for the ethics? As a final reference, we will talk about the centrality of mind and we will try to clarify the rationale and mental states like a development of the ethics. (shrink)

En la intimidad del diálogo de corazón a corazón entre Macrina y Gregorio en el De Anima et Resurrectione, se puede percibir no sólo una dialéctica: pathos–logos, maestro-discípulo, fe-ciencia; sino también, una estructuración del diálogo inspirada en el Fedro, en la que tras la tesis y la antítesis, se busca como fruto pedagógico del diálogo una síntesis de los elementos en cuestión. Este trabajo analizará los símbolos del caballo y los ojos, su relación en términos pedagógicos y mistagógicos, así como (...) la posibilidad de entender la educación como un diálogo cor ad cor. Estos dos dispositivos retóricos que también están presentes en De Vita Moysis e In Canticum Canticorum, le permiten al Niseno dialogar con la filosofía y la Sagrada Escritura en medio de su quehacer teológico. En este sentido, se analizará la introducción al diálogo, explorando también la estructura del discurso y su relación con el Fedro (1), para luego analizar los símbolos del caballo y los ojos (2), estableciendo algunas relaciones con De Vita Moysis e In Canticum Canticorum que permiten profundizar en la pedagogía cor ad cor de Macrina hacia Gregorio (3), para finalizar con una breve conclusión. (shrink)

En este trabajo intentamos mostrar cómo Zubiri fue entendiendo y precisando su «prueba» o argumento de la existencia de Dios desde sus últimas obras. Estudiamos su prueba a través de la «vía de la religación» desde cuatro textos o cursos: El problema teologal del hombre: Dios, religión, cristianismo, El despliegue del problema de Dios, El problema teologal del hombre: El hombre y Dios e Inteligencia sentiente.

A pesar de matices y variaciones de significado, la intencionalidad husserliana sigue al servicio de la verdad como adaequatio, adaptada al orden monádico de la conciencia trascendental. Sin embargo, en la conciencia interna del tiempo se ve la dificultad de interpretar intencionalmente la esfera pasiva de la conciencia, con lo cual peligra la vocación por la verdad de la intencionalidad. A partir de la constitución eidética, se busca una génesis pasiva del sentido ideal intencional, sin perder su referencia egológica. Despite (...) the nuances and variations in meaning, Husserlian intentionality continues to be at the service of truth as adaequatio, adapted to the monadic order of transcendental consciousness. However, the internal consciousness of time reveals the difficulty of interpreting the passive sphere of consciousness intentionally, which jeopardizes intentionality's vocation for truth. On the basis of eidetic constitution, a passive genesis of ideal intentional meaning is sought, which does not lose its reference to the ego. (shrink)

Muchos autores que se han ocupado de la autonomía personal parecen identificar la capacidad de autonomía esencialmente con la capacidad de todo agente racional para identificar preferencias y tomar decisiones conforme a las mismas. Estos autores -entre los que podríamos ubicar a C. Nino- prescinden a menudo de ulteriores elementos o condiciones para su ejercicio. Sin embargo, resulta fundamental ahondar en esos aspectos a veces pasados por alto; ahondar principalmente en las opciones y el proceso de formación de preferencias de (...) los agentes, para delinear mejor los aspectos normativos de la autonomía. En este trabajo propongo recuperar un elemento central del concepto que ha sido extensamente desarrollado en la literatura feminista, me refiero al contexto de relaciones que ha dado lugar a la llamada "autonomía relacional". Propongo incorporar esta noción al núcleo conceptual de la autonomía sin renunciar, sin embargo, a otros elementos del concepto entre los que destacaré las "opciones relevantes", es decir, la presencia de cursos de acción, de oportunidades, que la persona es capaz de reconocer como propuestas no solo viables sino legítimas para sí. Para desarrollar esta idea comenzaré por definir la autonomía a través de los que considero los elementos o condiciones centrales del concepto, deteniéndome especialmente en la condición de opciones relevantes. A continuación se abordará la cuestión relativa al modo en que las opciones se perfilan, se construyen y son percibidas por los sujetos. En este punto el estudio se fijará específicamente en el entorno contextual y de relaciones que sirve de trasfondo para la construcción de las opciones, para proponer la noción de opciones relacionales. Many authors have written about autonomy focusing mainly on the capacity of the autonomous agent for identifying preferences and making decisions. These authors -C. Nino among them- do not take into consideration further elements or conditions for being autonomous. However, it is necessary to take other aspects into consideration; mainly it is important to take account of both options and the building of the agent’s preferences. This way, autonomy normative aspects will be better understood. I propose here to analyse the concept of "relational autonomy", which has been largely elaborated within feminist theory. My aim is to incorporate relations and options to the core of the concept of personal autonomy. In this article, I will define personal autonomy first, highlighting the importance of relevant options. Second, I will describe the way options are built and their perception by the agent. Finally, I will focus on the context and relations on the background, and I will propose the notion of relational options. (shrink)

Chromosome segregation requires the ordered separation of the newly replicated chromosomes between the two daughter cells. In most cells, this requires nuclear envelope (NE) disassembly during mitotic entry and its reformation at mitotic exit. Nuclear envelope breakdown (NEB) results in the mixture of two cellular compartments. This process is controlled through phosphorylation of multiple targets by cyclin‐dependent kinase 1 (Cdk1)‐cyclin B complexes as well as other mitotic enzymes. Experimental evidence also suggests that nucleo‐cytoplasmic transport of critical cell cycle regulators such (...) as Cdk1‐cyclin B complexes or Greatwall, a kinase responsible for the inactivation of PP2A phosphatases, plays a major role in maintaining the boost of mitotic phosphorylation thus preventing the potential mitotic collapse derived from NEB. These data suggest the relevance of nucleo‐cytoplasmic transport not only to communicate cytoplasmic and nuclear compartments during interphase, but also to prepare cells for the mixture of these two compartments during mitosis. (shrink)

This paper has a double purpose: firstly, to assess the importance of seiðr magic rituals and of its practitioners within the social and mythological framework of Old norse-icelandic Literature. Secondly, by means of the analysis of certain scenes in The Saga of Gísli Súrsson, i aim to demonstrate that the inclusion of magic-religious motifs in the Sagas of icelanders has a triple objective: to provide a model to help understand apparently inexplicable phenomena, to intensify the tragic tone of the plot (...) and finally to depict those involved in the performance of seiðr in a very negative light. (shrink)

There are philosophers who deny that causal relations actually exist in nature, arguing that they are merely a product of our perspective as beings capable of intentional actions. In this paper I briefly explain this thesis and consider that it needs to be complemented with a basic non-causal ontological perspective whichcan account for phenomena taken as causal; I then describe what seems to be a good candidate for such an ontology and finally conclude, however, that it cannot dispense with the (...) concept of causation and that therefore is not the kind of ontology that anti-realism about causal relations requires.Hay filósofos que niegan la existencia de relaciones causales en la naturaleza argumentando que no son sino producto de nuestra perspectiva como seres capaces de acciones intencionales. En este artículo expongo brevemente esta tesis y sostengo que debe contar con el complemento de una ontología no causal básica que dé razón de los fenómenos que se consideran causales. Luego describo lo que parece ser una buena candidata para tal ontología y concluyo que, sin embargo, ésta no puede prescindir del concepto de causalidad y que, por tanto, no es el tipo de ontología que necesita la mencionada tesis antirrealista respecto a la causalidad. (shrink)