Espino, Santamaria, and Garcia-Madruga (2000) report three results on the time taken to respond to a probe word occurring as end term in the premises of a syllogistic argument. They argue that these results can only be predicted by the theory of mental models. It is argued that two of these results, on differential reaction times to end-terms occurring in different premises and in different figures, are consistent with Chater and Oaksford's (1999) probability heuristics model (PHM). It is argued (...) that the third finding, on different reaction times between figures, does not address the issue of processing difficulty where PHM predicts no differences between figures. It is concluded that Espino et al.'s results do not discriminate between theories of syllogistic reasoning as effectively as they propose. (shrink)
We report three experimental studies of reasoning with double conditionals, i.e. problems based on premises of the form: If A then B. If B then C. where A, B, and C, describe everyday events. We manipulated both the logical structure of the problems, using all four possible arrangements (or “figures” of their constituents, A, B, and C, and the believability of the two salient conditional conclusions that might follow from them, i.e. If A then C, or If C then A. (...) The experiments showed that with figures for which there was a valid conclusion, the participants more often, and more rapidly, drew the valid conclusion when it was believable than when it was unbelievable. With figures for which there were no valid conclusions, the participants tended to draw whichever of the two conclusions was believable. These results were predicted by the theory that reasoning depends on constructing mental models of the premises. (shrink)
We report three experimental studies of reasoning with double conditionals, i.e. problems based on premises of the form: If A then B. If B then C. where A, B, and C, describe everyday events. We manipulated both the logical structure of the problems, using all four possible arrangements (or ''figures" of their constituents, A, B, and C, and the believability of the two salient conditional conclusions that might follow from them, i.e. If A then C , or If C then (...) A . The experiments showed that with figures for which there was a valid conclusion, the participants more often, and more rapidly, drew the valid conclusion when it was believable than when it was unbelievable. With figures for which there were no valid conclusions, the participants tended to draw whichever of the two conclusions was believable. These results were predicted by the theory that reasoning depends on constructing mental models of the premises. (shrink)
We examine the role of working memory's central executive in the mental model explanation of propositional reasoning by using two working memory measures: the classical “reading span” test by Daneman and Carpenter (1980) and a new measure. This new “reasoning span” measure requires individuals to solve very simple anaphora problems, and store and remember the word solution in a growing series of inferential problems. We present one experiment in which we check the involvement of the central executive in conditional and (...) disjunctive inference tasks and compare predictions of the new reasoning span test with those of the classical reading span test. The results of the experiment confirm that reasoning responses, which according to mental model theory require high cognitive work, are predicted by working memory measures. Results also show that some reasoning responses are probably obtained by means of superficial biases or strategies that do not load working memory. The reasoning span test, which involves the central executive to a greater degree, predicts reasoning performance better than the reading span test. The significance and possibilities of the new measure in studying reasoning are discussed. (shrink)
We report five experiments showing that the activation of the end-terms of a syllogism is determined by their position in the composite model of the premises. We show that it is not determined by the position of the terms in the rule being applied (Ford, 1994), by the syntactic role of the terms in the premises (Polk & Newell, 1995; Wetherick & Gilhooly, 1990), by the type of conclusion (Chater & Oaksford, 1999), or by the terms from the source premise (...) (Stenning & Yule, 1997). In our first experiment we found that after reading a categorical premise, the most active term is the last term in the premise. In Experiments 2, 3, and 4 we demonstrated that this pattern of activity is due to the position of the concepts in the model of the premises, regardless of the delay after reading the premises (150 or 2000 msec) or the quantity of the quantifiers (universal or existential). The fifth experiment showed that the pattern switches around after participants evaluate a conclusion. We propose that the last element in the model maintains a higher level of activity during the comprehension process because it is generally used to attach the incoming information. After this process, the first term becomes more active because it is the concept to which the whole representation is referred. These results are predicted by the mental model theory (Johnson-Laird & Byrne, 1991), but not by the verbal reasoning theory (Polk & Newell, 1995), the graphical methods theory (Yule & Stenning, 1992), the attachment-heuristic theory (Chater & Oaksford, 1999), or the mental rules theory (Ford, 1994). (shrink)
El Foro Global de Bioética en Investigación (GFBR por sus siglas en inglés) se reunió el 3 y 4 de noviembre en Buenos Aires, Argentina, con el objetivo de discutir la ética de la investigación con mujeres embarazadas. El GFBR es una plataforma mundial que congrega a actores clave con el objetivo de promover la investigación realizada de manera ética, fortalecer la ética de la investigación en salud, particularmente en países de ingresos bajos y medios, y promover colaboración entre países (...) del norte y del sur.a Los participantes en el GFBR provenientes de Latinoamérica incluyeron a eticistas, investigadores, miembros de comités de ética y representantes de autoridades sanitarias provenientes de Argentina, Brasil, Chile, Colombia, Ecuador, El Salvador, Guatemala, Honduras, Panamá, Perú, Nicaragua y la República Dominicana. Una legítima preocupación por la protección de las mujeres embarazadas y sus embriones o fetos ha llevado a la mayoría de los países de la Región de las Américas a limitar la realización de estudios con mujeres embarazadas exclusivamente a aquellos estudios específicos sobre el embarazo, y a requerir la exclusión sistemática de las mujeres embarazadas o de las mujeres que quedan embarazadas en el curso del estudio. Ciertamente, a lo largo de la historia de la ética de la investigación, se ha creído erróneamente que proteger a una población es sinónimo de excluirla de los estudios. Se sabe ahora que proceder así implica exponer a riesgos mucho mayores a la población que se busca proteger. El embarazo implica cambios fisiológicos sustantivos e impacta profundamente la manera como el cuerpo metaboliza los medicamentos. Sin embargo, por evitar hacer investigación con mujeres embarazadas, no se ha producido la evidencia científica necesaria para tomar decisiones sobre tratamientos e intervenciones preventivas con dosis eficaces y seguras para ellas y sus embriones o fetos. A manera de ilustración, en el 2001 había en los Estados Unidos apenas más de una docena de medicamentos aprobados para uso en el embarazo (1) y en el 2011 la Food and Drug Administration (FDA) aprobó por primera vez en 15 años un medicamento para su uso en el embarazo (2). Como consecuencia de no haber producido la evidencia necesaria, se pone en riesgo la salud de las mujeres embarazadas cada vez que se les da atención médica. Las mujeres embarazadas se enferman y las mujeres enfermas se embarazan, y no se sabe si los medicamentos que se les da son eficaces o siquiera seguros para ellas y sus embriones o fetos. (shrink)
El propósito de este artículo es el de investigar algunos conceptos de la Filosofía del límite de Eugenio Trías y de la noción de “genealogía” propuesta por Michel Foucault.Expuestos a partir de tres trilogías de imágenes, se desprenden diálogos que ayudan a pensar cómo se develan esas sombras de la existencia que se esconden en los pliegues de lo racional. La gran pregunta tiene que ver con el “entorno matricial” y con el movimiento de “exilio y éxodo” del ser. Las (...) imágenes elegidas funcionan como “hitos genealógicos” foucoultianos: esas “verdades sin apariencia” y “sin historia” que emergen presentando vinculaciones que inducen a otras lecturas hermenéuticas.El artículo vuelve siempre otra vez -a partir de algunas de las imágenes elegidas- a pensarse desde San Juan / Argentina, sitio que tensiona e implica, en este caso, la existencia de todas estas reflexiones y su conexión visual. (shrink)
Reichenbachian approaches to indexicality contend that indexicals are "token-reflexives": semantic rules associated with any given indexical-type determine the truth-conditional import of properly produced tokens of that type relative to certain relational properties of those tokens. Such a view may be understood as sharing the main tenets of Kaplan's well-known theory regarding content, or truth-conditions, but differs from it regarding the nature of the linguistic meaning of indexicals and also regarding the bearers of truth-conditional import and truth-conditions. Kaplan has criticized these (...) approaches on different counts, the most damaging of which is that they make impossible a "logic of demonstratives". The reason for this is that the token-reflexive approach entails that not two tokens of the same sentential type including indexicals are guaranteed to have the same truth-conditions. In this paper I rebut this and other criticisms of the Reichenbachian approach. Additionally, I point out that Kaplan's original theory of "true demonstratives" is empirically inadequate, and claim that any modification capable of accurately handling the linguistic data would have similar problems to those attributed to the Reichenbachian approach. This is intended to show that the difficulties, no matter how real, are not caused by idiosincracies of the "token-reflexive" view, but by deep facts about indexicality. (shrink)
Interview with Juan. A. Negrete, annual prize 2014 to the promotion of the philosophy and the culture in Málaga. The award is extended to the network of blogs: Cavernisofía, Cavernética and Cavernisofíasegundaplanta.
This text summarizes the 15 articles included in the book Futurizar el presente. Estudios sobre la filosofía de Leonardo Polo, edited by I. Falgueras, J. A. García and J. J. Padial. The writings are grouped in these chapters: Theory of language, History of Philosophy, Ratio and Will, Synderesis, Metaphysics and Anthropology. In this latest topic some very interesting and suggestive ideas are proposed.
Why is it so difficult to achieve universal health coverage in the United States? First and foremost, as Richard Kirsch points out in his book, Fighting for Our Health, health care is deeply personal. Since most people in the United States have health insurance, efforts to modify the system understandably cause a certain amount of unease regarding how changes could impact their access to trusted doctors or necessary care.
Descriptive semantic theories purport to characterize the meanings of the expressions of languages in whatever complexity they might have. Foundational semantics purports to identify the kind of considerations relevant to establish that a given descriptive semantics accurately characterizes the language used by a given individual or community. Foundational Semantics I presents three contrasting approaches to the foundational matters, and the main considerations relevant to appraise their merits. These approaches contend that we should look at the contents of speakers’ intuitions; at (...) the deep psychology of users and its evolutionary history, as revealed by our best empirical theories; or at the personal-level rational psychology of those subjects. Foundational Semantics II examines a fourth view, according to which we should look instead at norms enforced among speakers. The two papers aim to determine in addition the extent to which the approaches are really rival, or rather complementary. (shrink)
In this full review paper, the recent emerging trends in Computing Structures, Software Science, and System Applications have been reviewed and explored to address the recent topics and contributions in the era of the Software and Computing fields. This includes a set of rigorously reviewed world-class manuscripts addressing and detailing state-of-the-art, framework, implemented approaches and techniques research projects in the areas of Software Technology & Automation, Networking, Systems, Computing Sciences and Software Engineering, Big Data and E-learning. Based on this systematic (...) review, we have put some recommendations and suggestions for researchers, practitioners and scholars to improve their research quality in this area. (shrink)
O presente artigo discutirá as origens e os desdobramentos do revisionismo no pensamento historiográfico sobre a Guerra do Paraguai, ressaltando a posição do político e escritor argentino Juan Bautista Alberdi como peça chave na gênese desse movimento de interpretação da guerra. Sem desvalorizar o papel de revisionistas históricos como O’Leary e Baéz, argumentamos que é nos escritos de Alberdi que encontramos a gênese mais bem definida do pensamento revisionista que iria assumir diversas cores político argumentativas ao longo dos séculos (...) XIX e XX. Concluímos que, ao interpretar a Guerra do Paraguai como uma continuidade das guerras intestinas argentinas, Alberdi inaugura um modelo interpretativo que, explorado à exaustão, definirá o Paraguai como vítima de uma agressão desmedida e baluarte da causa americana. (shrink)
In recent decades, there has been a proliferation among the scientific community of works that focus on Alan Turing’s contributions to the design and development of the modern computer. However, there are significant discrepancies among these studies, to such a point that some of them cast serious doubts on Alan Turing’s work with respect to today’s computer, and there are others that staunchly defend his leading role, as well as other studies that set out more well-balanced opinions. Faced with this (...) situation, the aim of this paper is to analyse the evidence existing today in order to be able to draw a conclusion about whether or not Turing anticipated the trivialisation of the modern computer memory and, likewise, if his universal a-machine is the precursor of the general-purpose computer so omnipresent today. As a result of our research, the authors conclude that Turing did indeed play a leading role in the appearance of the modern computer, although he was not the only one or the first in the field of Computing Science, albeit he was the most influential, both in scope and in depth. (shrink)
English summary: G.W. Leibniz's philosophy represents a fundamental chapter in the constitution of what we mean by modernity. Leibniz can be considered a source of inspiration for both the moment of the emergence of modernity as well as for the moment of the crisis of Enlightenment. Despite his influence on various authors, Leibniz does not let himself be identified with the core of Enlightenment thinking that was prevalent in the Western world in recent centuries. We are therefore faced with a (...) thinking that in its development depends neither on the enlightened modernity, nor on the principal alternative, hermeneutics. Thus, the span of Leibniz's thought ranges from the time before the Enlightenment through to post-hermeneutics. This volume presents a selection of articles from the "IV Congreso Internacional Leibniz: G. W. Leibniz entre la genesis y la crisis de la Modernidad" which was selected by the "Sociedad Espanola Leibniz" held in Granada. German, English, & French text. German description: Die Philosophie G. W. Leibniz stellt ein grundlegendes Kapitel fuer die Konstituierung dessen dar, was wir unter Modernitat verstehen. Leibniz kann als eine Inspirationsquelle sowohl im Moment der Entstehung der Modernitat als auch im Moment der Krise der Aufklarung verstanden werden. Trotz seines Einflusses auf verschiedene Autoren lasst sich Leibniz nicht mit dem Kern des aufklarerischen Denkens identifizieren, das in der westlichen Welt in den letzten Jahrhunderten vorherrschend war. Wir stehen also vor einem Denken, das in seinem Werdegang weder von der aufgeklarten Modernitat noch von deren hauptsachlicher Alternative, der Hermeneutik, abhangt. Somit spannt sich der Bogen des Denkens Leibniz von der Zeit vor der Aufklarung bis hin zur Post-Hermeneutik. Dieser Sammelband prasentiert eine Auswahl der Beitrage auf dem IV Congreso Internacional Leibniz: G. W. Leibniz entre la genesis y la crisis de la Modernidad, der von der Sociedad espanola Leibniz in Granada abgehalten wurde. Die Studien umfassen vier thematische Bereiche: Leibniz und die Entstehung der Modernitat, die Prinzipien der Philosophie und der Naturwissenschaften, die Sprachphilosophie und die Erkenntnistheorie, Ontologie und Theodizee. (shrink)
RESUMENLa tesis es, más bien, que la discusión del empirismo, la solución de ese reto empirista que separa el pensar del ser, forma parte de la altura histórica de la filosofía en el momento presente, es una exigencia suya. Si la filosofía comenzó buscando la unidad del ser, ha proseguido resquebrajándola; en particular distinguiendo el ser creado del increado, y luego distinguiendo el ser natural del personal, las cosas de las personas. Estas distinciones afectan de una manera muy particular a (...) las relaciones entre el ser y el pensar, y a su eventual unidad; éste es, por eso, el tema del empirismo, y de nuestro tiempo.PALABRAS CLAVESEMPIRISMO, SER, PENSARABSTRACTThe argument is that the discussion of empiricism is a requirement of philosophy at the present time, solving that challenge that separates thinking of being. If philosophy began seeking the unity of being, has continued dividing this unity; in particular distinguishing the uncreated and created being, and then distinguishing the natural and the personal being. These distinctions affect a particular the relationship between being and thinking, and his eventual drive way; it is, therefore, the issue of empiricism, and our time.KEY WORDSEMPIRICISM, BEING, THINK. (shrink)
resumo Neste trabalho é analisada a estratégia da exposição de Fichte em seu escrito Sobre o conceito da Doutrina da Ciência e interpretada como indo de encontro a um determinado tipo do ceticismo moderno. Todavia, ao contrário da leitura proposta por Rockmore, que sustenta ser possível considerar toda a epistemologia fichteana dessa época como uma linha de argumentação de cunho pragmático e antifundacionista, defende-se a tese de que Fichte está comprometido desde o início com a tarefa de uma fundamentação última (...) de toda ciência a partir de um primeiro princípio. Esta fundamentação seria levada a cabo mediante uma demonstração indireta que pretende refutar de modo muito original objeções levantadas por Maimon, por Schulze e outros contra a filosofia transcendental de Kant. O mero fato de que Fichte não considerasse este último princípio como passível de demonstração direta não é suficiente para tachar sua estratégia de pragmática. palavras-chave Fichte; Filosofia Transcendental; Pragmatismo; Ceticismo; Fundacionismo. (shrink)
