A characterization of epistemic rationality, or epistemic justification, is typically taken to require a process of conceptual clarification, and is seen as comprising the core of a theory of (epistemic) rationality. I propose to explicate the concept of rationality. -/- It is essential, I argue, that the normativity of rationality, and the purpose, or goal, for which the particular theory of rationality is being proposed, is taken into account when explicating the concept of rationality. My position thus amounts to an (...) instrumentalist position about theories of epistemic rationality. Since there are different purposes, or goals, for which theories of rationality are proposed, the method of explication leaves room for different characterizations of rationality. I focus on two such (kinds of) purposes: first, the purpose of guiding the formation (or maintenance) of doxastic states and, second, the purpose of assessing (the formation or maintenance of) doxastic states. I conclude by outlining a pluralistic picture concerning rationality. (shrink)

Enjoying great popularity in decision theory, epistemology, and philosophy of science, Bayesianism as understood here is fundamentally concerned with epistemically ideal rationality. It assumes a tight connection between evidential probability and ideally rational credence, and usually interprets evidential probability in terms of such credence. Timothy Williamson challenges Bayesianism by arguing that evidential probabilities cannot be adequately interpreted as the credences of an ideal agent. From this and his assumption that evidential probabilities cannot be interpreted as the actual credences of human (...) agents either, he concludes that no interpretation of evidential probabilities in terms of credence is adequate. I argue to the contrary. My overarching aim is to show on behalf of Bayesians how one can still interpret evidential probabilities in terms of ideally rational credence and how one can maintain a tight connection between evidential probabilities and ideally rational credence even if the former cannot be interpreted in terms of the latter. By achieving this aim I illuminate the limits and prospects of Bayesianism. (shrink)

In everyday life and in science we acquire evidence of evidence and based on this new evidence we often change our epistemic states. An assumption underlying such practice is that the following EEE Slogan is correct: 'evidence of evidence is evidence' (Feldman 2007, p. 208). We suggest that evidence of evidence is best understood as higher-order evidence about the epistemic state of agents. In order to model evidence of evidence we introduce a new powerful framework for modelling epistemic states, Dyadic (...) Bayesianism. Based on this framework, we then discuss characterizations of evidence of evidence and argue for one of them. Finally, we show that whether the EEE Slogan holds, depends on the specific kind of evidence of evidence. (shrink)

On an evidentialist position, it is epistemically rational for us to believe propositions that are (stably) supported by our total evidence. We are epistemically permitted to believe such propositions, and perhaps even ought to do so. Epistemic rationality is normative. One popular way to explain the normativity appeals to epistemic teleology. The primary aim of this paper is to argue that appeals to epistemic teleology do not support that we ought to believe what is rational to believe, only that we (...) are permitted to do so. In arguing for that, I defend an epistemic teleological position that is radical in nature. It involves no commitment to aiming at the truth. I conclude by dispelling some worries that have been raised about my position. (shrink)

In the literature, one finds two accounts of the normative status of rational belief: the ought account and the permissibility account. Both accounts have their advantages and shortcomings, making it difficult to favour one over the other. Imagine that there were two principles of rational belief or rational degrees of belief commonly considered plausible, but which, however, yielded a paradox together with one account, but not with the other. One of the accounts therefore requires us to give up one of (...) the plausible principles; whereas the other allows us to save them both. The fact that it allows us to save both of the plausible principles might well be considered a strong reason in favour of the relevant account. The permissibility-account-based resolution of the lottery paradox suggests that the permissibility account is a candidate for being supported in this way, since the account seems to save two plausible principles of rational belief and rational degrees of belief. I argue that even if the permissibility account were supported in this way the support would be defeated, since one cannot provide an analogous resolution of the preface paradox. The principles remain unsaved by the permissibility account. (shrink)

This paper is the introduction to the Special Issue “Philosophical Methods”. The Special Issue will be published by Synthese.

How should an agent revise her epistemic state in the light of doxastic disagreement? The problems associated with answering this question arise under the assumption that an agent’s epistemic state is best represented by her degree of belief function alone. We argue that for modeling cases of doxastic disagreement an agent’s epistemic state is best represented by her confirmation commitments and the evidence available to her. Finally, we argue that given this position it is possible to provide an adequate answer (...) to the question of how to rationally revise one’s epistemic state in the light of disagreement. (shrink)

I focus on the No-Paradise Dilemma, which results from some initially plausible epistemic ideals, coupled with an assumption concerning our evidence. Our evidence indicates that we are not in an epistemic paradise, in which we do not experience cognitive failures. I opt for a resolution of the dilemma that is based on an evidentialist position that can be motivated independently of the dilemma. According to this position, it is rational for an agent to believe a proposition on the agent’s total (...) evidence just in case the (total) evidence stably supports the proposition. Based on this evidentialist position, I argue that it is not an epistemic ideal in the actual world that we hold rational beliefs that are logically equivalent to our rational beliefs. The dilemma is resolved by giving up this ideal for the actual world and adopting the evidentialist position in terms of stable evidential support. (shrink)

When members of a group doxastically disagree with each other, decisions in the group are often hard to make. The members are supposed to find an epistemic compromise. How do members of a group reach a rational epistemic compromise on a proposition when they have different (rational) credences in the proposition? I answer the question by suggesting the Fine-Grained Method of Aggregation, which is introduced in Brössel and Eder 2014 and is further developed here. I show how this method (...) faces challenges of the standard method of aggregation, Weighted Straight Averaging, in a successful way. One of the challenges concerns the fact that Weighted Straight Averaging does not respect the evidential states of agents. Another challenge arises because Weighted Straight Averaging does not account for synergetic effects. (shrink)

The Stoic theory of knowledge was founded by Zeno on a perceptual and crudely materialistic base, but subsequently developed into an elaborate theory involving λεκτ which has proved difficult to reconstruct. The evolution of the school, influenced not only by internal differences but also by interaction with the Platonic Academy, certainly contributed to this development. Hence any adequate reconstruction of the Stoic theory of knowledge must take account of the differences among the positions of the different representatives of the school (...) with respect to the criticism put foward by the Academics. I propose here to clarify Zeno's position, showing how Arcesilaus' criticism helped to expose certain lacunae and thus to bring about changes in doctrine on the part both of Zeno himself and of his immediate successors. (shrink)

Nostalgia is a fond longing for the past that has been shown to increase feelings of meaning, social connectedness, and self-continuity. Although nostalgia for personal memories provides intra- and interpersonal benefits, there may be negative consequences of group-based nostalgia on the perception and acceptance of others. The presented research examined national nostalgia, and its effects on group identification and political attitudes in the United States. In a sample of US voters, tendencies to feel personal and national nostalgia are associated with (...) markedly different emotional and attitudinal profiles. Higher levels of national nostalgia predicted both positive attitudes toward President Trump and racial prejudice, though there was no evidence of such relationships with personal nostalgia. National nostalgia most strongly predicted positive attitudes toward president Trump among those high in racial prejudice. Furthermore, nostalgia's positive relationship with racial prejudice was partially mediated by perceived outgroup threat. Results from this study will help us better understand how the experience of national nostalgia can influence attitudes and motivate political behavior. (shrink)

La Collection Les Alchimistes Grecs della CUF si arricchisce d'un altro volume con un'opera del tutto nuova rispetto ai due volumi già pubblicati, l'Anonyme de Zuretti: il testo, che prende il nome da C. O. Zuretti, il quale ne curò nel 1930 l'editio princeps nel VII volume del Catalogue des manuscrits alchimistes grecs, è «un traité pratique, complet et systematique, rédigé à l'époque médiévale par un Grec d'Italie du Sud. Celui-ci se base sur de nombreuses sources latines et arabo-latines, sans (...) renier pour autant la tradition grecque, et il écrit dans une langue déroutante … respectée au maximum» (p. VII). Come scrive l'Editrice nell'Avant-propos, questa sintesi delle conoscenze alchemiche mediterranee degli inizi del 1300 è il più lungo dei testi alchemici greci e presenta diversi motivi di interesse: • è il testimone del sincretismo culturale che fioriva nel regno di Napoli in epoca angioina; • è un documento interessante per lo studio della lingua greca medievale della Calabria; • permette di affrontare problemi filologici legati al fenomeno della traduzione. (shrink)

En contra de Sartre, el paralelismo que Merleau-Ponty establece entre literatura y pintura en su escrito El lenguaje indirecto y las voces del silencio es una manifestación de su ontología indirecta. Este texto, que puede ser leído como una reconsideración de la frase horaciana ut pictura poesis ―la pintura es como la poesía―, pretende entonces poner en claro cómo es posible la relación interartística entre la literatura ―arte cuyo material es el lenguaje― y la pintura ―arte que se sirve de (...) formas y colores―. Para el filósofo francés la literatura y la pintura comparten el hecho de ser expresiones de una realidad pre-objetiva. Ahora bien, puesto que la obra de Merleau-Ponty es un intento incesante por incluir esa realidad, el arte, como expresión privilegiada de la misma, adquiere un papel fundamental en el pensamiento filosófico. (shrink)

In March 1986, a public symposium took place in Heidelberg about the “unresolved potential dangers of genetic engineering”. The event was organized by institutions affiliated with the environmental movement. Choosing this symposium as an example, the article shows how the public appearance of scientists can be understood as a form of political activism. The article shows how specialists from fields as diverse as biology, chemistry, physics, law and political sciences tried to place political messages by putting themselves in the limelight (...) as independent scientists. I argue that the symposium was both: a place of science communication intertwined with political agitation that, as should be noted, happened in a time when the West German government was working on the legislation of genetic engineering, legitimated by relying on independent expertise. It can be concluded that the discourse of scientific independence became a strategic tool in the controversial debate about the uses and dangers of genetic engineering. Thus, it draws attention to a dimension of political-scientific activity which cannot be fully grasped by the concept of ‘the expert’ that is established in the history of science. (shrink)

The paper is about the connotations of the philosophical novel. It explores the question of whether and how the philosophical novel can become functional model for philosophical praxis. I argue that the philosophical novel is a tool for activating a relational process whereby the concept of “situated relationship” becomes clear and is enhanced in conjunction with the activation of philosophical praxis. A “situated relationship” is identified as a relational practice which is contextualized and exerted in and between thinking, language and (...) action, within the framework of an educational process which becomes a dialogue-oriented research through relational networks. This form of thinking is not only Logos, but also Pathos and Ethos, inasmuch as the interconnection of thinking, language, meaning and behavior is made manifest, recognized and practiced in thinking and with thinking. By fostering awareness of the cognitive and affective dimensions, this form of thinking can extend such awareness to the relational dimension, interpersonal and intrapersonal, within a constant circular form of complementarity. (shrink)

Material artefacts consist of many smaller – and ultimately natural – objects such as molecules and atoms that have been intentionally rearranged in such a way as to take the shape of a particular artefact and fulfil its functions. Whenever the arrangement of several parts results in properties that go beyond the properties of the individual parts or their sum, it can be said that this arrangement has resulted in a new object. Once created, material artefacts may take part in (...) natural processes such as reproduction and evolution and cannot be fundamentally distinguished from fully natural objects. This article provides a number of – mainly biological – examples that show the traditional Aristotelian dichotomy between nature and artefacts to be highly problematic and suggest a continuum instead. Most importantly, it is argued that living beings and artefacts are equally capable – or sometimes incapable – of self-reproduction and that there are numerous objects which are both living beings and artefacts. (shrink)

Semantyka teoriomonogościowa dla wielowartościowych rachunków pozycyjnych Celem artykułu jest zdefiniowanie adekwatnych semantyk teoriomonogościowych dla rachunków pozycyjnych.

The present research examined the connections between temperament, students’ domain- and course-specific motivational appraisals, and performance, in two studies. Study 1 explored the relationships between temperamental sensitivities, motivational appraisals, and task achievement among secondary students in the domain of mathematics, using Exploratory Structural Equation Modeling for the analyses. Study 2 was conducted longitudinally among upper-secondary students during a course in four key school subjects. Subject interest was included alongside the temperamental sensitivities as a predictor of course-specific motivation and course grades, (...) and the data were analysed with Partial Least Squares Structural Equation Modeling. Previous achievement was controlled in both studies. The findings showed temperamental sensitivities to be differentially linked with motivational appraisals. Punishment sensitivity in Study 1, and interindividual reward sensitivity in Study 2 were found to have an effect on psychological strain. In both studies, interest and effort were predicted by intraindividual reward sensitivity. In Study 2, subject interest was a consistent predictor of higher course interest and lower strain. In both studies, connections were found between strain and lower performance. The findings suggest individual characteristics may predispose students to certain motivational experiences, and contribute to educational outcomes, in both domain and course contexts and across subject content. (shrink)

The aim of the study was to examine the role of self-esteem in resisting the influence of materialistic goals of four social role models in adolescents. Previous studies showed a negative correlation between the psychological health of teens and striving for materialistic goals, one of the main sources is the social modeling of materialism. Two studies were carried out. The first, correlational study, was conducted on target teens and their mothers, fathers, and peers of their choice. It examined if self-esteem (...) is a moderator of the relationship between the materialism of social role models and the materialism of teens. The second, experimental study, was conducted on target teens only. It examined how boosting the self-esteem of teens and activating materialism of social role models may affect the materialism of teens. Study 1 showed a significant interaction effect of self-esteem and the materialism of peers on the materialism of teens. The interaction effects of self-esteem and other role models were not significant. Study 2 showed that elevated self-esteem lowered the influence of the materialism of peers on the materialism of teens. The results were not significant when other role models were analyzed. The results obtained in the presented studies indicate that the self-esteem of teens may have an important role in resisting the influence of materialism role models of peers. Practical implications of the studies for the psychological health of teens are also discussed. (shrink)

In many applications we have a set of objects together with their properties. Since the available information is usually incomplete and/or imprecise, the true knowledge about subsets of objects can be determined approximately only. In this paper, we discuss a fuzzy generalisation of two pairs of relation-based operators suitable for fuzzy set approximations, which have been recently investigated by Düntsch and Gediga. Double residuated lattices, introduced by Orlowska and Radzikowska, are taken as basic algebraic structures. Main properties of these operators (...) are presented. (shrink)