Hempel's paradox of the ravens has to do with the question of what constitutes confirmation from a logical point of view; Wason 's selection task has been used extensively to investigate how people go about attempting to confirm or disconfirm conditional claims. This paper presents an argument that the paradox is resolved, and that people's typical performance in the selection task can be explained, by consideration of what constitutes an effective strategy for seeking evidence of the tenability of universal or (...) conditional claims in everyday life. (shrink)

This book reviews the work of prominent psychologists and philosophers on conditional reasoning. It provides empirical research on how people deal with conditional arguments and examines how conditional statements are used and interpreted in everyday communication.

ABSTRACTTreating conditionals as probabilistic statements has been referred to as a defining feature of the “new paradigm” in cognitive psychology. Doing so is attractive for several reasons, but it complicates the problem of assessing the merits of conditional arguments. We consider several variables that relate to judging the persuasiveness of conditional arguments with uncertain premises. We also explore ways of judging the consistency of people's beliefs as represented by components of conditional arguments. Experimental results provide evidence that inconsistencies in beliefs (...) are more prevalent if the arguments’ components are spatially and temporally dispersed than if they are contiguous in space and time. This supports the idea that assuring the consistency among even a small number of beliefs is difficult to do, especially if the beliefs in question are not brought into consciousness at the same time; but consistency can be enhanced when beliefs are considered simultaneously or nea... (shrink)

The term “exchange paradox” refers to a situation in which it appears to be advantageous for each of two holders of an envelope containing some amount of money to always exchange his or her envelope for that of the other individual, which they know contains either half or twice their own amount. We review several versions of the problem and show that resolving the paradox depends on the specifics of the situation, which must be disambiguated, and on the player's beliefs. (...) The latter psychological variables are part and parcel of the resolution. Assuming reasonable subjective distributions, exchanging cannot always be advantageous for both players. We suggest several deep-rooted psychological reasons for the considerable difficulty people demonstrably have in dealing with this problem. Implicit widespread and compelling assumptions—that affect judgement in diverse contexts—obstruct the solution. Analysing this paradox underscores the close connection between psychology and probability theory. (shrink)

The “exchange paradox”—also referred to in the literature by a variety of other names, notably the “two-envelopes problem”—is notoriously difficult, and experts are not all agreed as to its resolution. Some of the various expressions of the problem are open to more than one interpretation; some are stated in such a way that assumptions are required in order to fill in missing information that is essential to any resolution. In three experiments several versions of the problem were used, in each (...) of which the information given was sufficient to determine an optimal choice strategy when it exists or to justify indifference regarding keeping or trading when such a strategy does not exist. College students who were presented with the various versions of the problem tended to base their choices on simple heuristics and to give little evidence of understanding the probabilistic implications of the differences in the problem statements. (shrink)

Drawing from the study of human reasoning, Argumentation describes different types of arguments and explains how they influence beliefs and behaviour. Raymond Nickerson identifies many of the fallacies, biases, and other flaws often found in arguments as well as 'stratagems' that people regularly use to persuade others. Much attention is given to the evaluation of arguments. Readers will learn a new schematic for evaluating arguments based on cognitive science. As a source for understanding and evaluating arguments in decision-making, (...) it is ideal for courses on cognition, reasoning, and psychology. (shrink)

The "two-envelopes" problem has stimulated much discussion on probabilistic reasoning, but relatively little experimentation. The problem specifies two identical envelopes, one of which contains twice as much money as the other. You are given one of the envelopes and the option of keeping it or trading for the other envelope. Variables of interest include the possible amounts of money involved, what is known about the process by which the amounts of money were assigned to the envelopes, and whether you are (...) allowed to know how much money is in the envelope in hand before deciding whether to keep or trade. In an earlier study, Butler and Nickerson found that when participants were allowed to know how much was in the envelope in hand, they generally elected to trade if that amount was small relative to the range of possibilities and to keep otherwise. The present experiments showed that this propensity was independent of the amount of money in the envelopes. Participants made decisions with a strong bias for avoiding the risk of losing by trading, particularly when the amount in hand was known and large relative to the range of possible amounts, regardless of the absolute value of the gamble. The results illustrate the dependence of thinking on the context in which it occurs, and demonstrate a tendency to treat quantities that are large or small relative to a particular context in which they are encountered as though they were large or small in a more general sense. (shrink)

Two old problems in probability theory involving the concept of randomness are considered. Data obtained with one of them--Bertrand's chord problem--demonstrate the equivocality of this term in the absence of a definition or explication of assumptions underlying its use. They also support two propositions about probabilistic thinking: (1) upon obtaining an answer to a question of probability, people tend to see it as the answer, overlooking tacit assumptions on which it may be based, and tend not to consider the possibility (...) of other assumptions from which different answers would follow; (2) perceptual balance--moderate uniformity of density of distribution--is a determinant of the degree to which a two-dimensional pattern is perceived as random. (shrink)

Two experiments were conducted with variants of Wason's (1966) selection task. The common focus was the effect of differences in the sizes of the sets represented by P and not-Q in assertions of the form _If P then Q_ (conditional) or _All P are Q_ (categorical). Results support the conclusion that such set size differences affect the strategies people adopt when asked to determine, efficiently, the truth or falsity of such assertions, but they do not entirely negate the tendency to (...) select the term represented by P (the antecedent of the conditional or the subject of the categorical) in preference to the term represented by not-Q (the complement of the consequent of the conditional or the complement of the predicate of the categorical). Several possible explanations of this perseverance are considered. Results also support the conclusion that people find it easier to assess categorical assertions than logically equivalent conditional assertions. (shrink)

Elqayam & Evans (E&E) argue that the major objective of research on human thinking should be the development of descriptive theories, and they challenge normativism the belief that people ought to conform to a normative standard” (target article, sect. 1, para. 10). I contend that although their argument for the importance of developing descriptive theories is compelling, normative theories are also important, not only for improving thinking but for investigating and understanding it as well.

Introduction This book is about reasoning. It is not a textbook in the conventional sense. Nor does it provide a prescription for how to reason effectively. ...

Participants attempted to solve a modified version of Wason's selection task. Variables were: sizes of the sets referenced by a specified assertion, form of the assertion, thematic content of the assertion, and the need for sampling or not. In Experiment 1, participants were given enough information to determine the truth or falsity of the specified assertion with certainty; in Experiment 2, they had to rely on sampling and could not determine the assertion's truth or falsity with certainty. Performance was better (...) in Experiment 1 than in Experiment 2, but in both cases much better than what is typically obtained with the conventional selection task. The results support the hypothesis that performance of the selection task is sensitive to the sizes of the sets involved, add credence to the conclusion that framing the task in a thematically meaningful way can facilitate performance, and demonstrate that facilitation does not require deontic reasoning or a well-known convention being involved. The relationship between expressed confidence and level of performance is consistent with other studies showing the former to be a good predictor of the latter. (shrink)

Time's mysteries seem to resist comprehension and what remains, once the familiar metaphors are stripped away, can stretch even the most profound philosopher. In Of Time and Lamentation, Raymond Tallis rises to this challenge and explores the nature and meaning of time and how best to understand it. The culmination of some twenty years of thinking, writing and wondering about (and within) time, it is a bold, original, and thought-provoking work. With characteristic fearlessness, Tallis seeks to reclaim time from (...) the jaws of physics. For most of us, time is composed of mornings, afternoons, and evenings and expressed in hurry, hope, longing, waiting, enduring, planning, joyful expectation, and grief. Thinking about it is to meditate on our own mortality. Yet, physics has little or nothing to say about this time, the time as it is lived. The story told by caesium clocks, quantum theory, and Lorentz coordinates, Tallis argues, needs to be supplemented by one of moss on rocks, tears on faces, and the long narratives of our human journey. Our temporal lives deserve a richer attention than is afforded by the equations of mathematical physics.The first part of the book, "Killing Time" is a formidable critique of the spatialized and mathematized account of time arising from physical science. Part 2, "Human Time" examines tensed time, the reality of time as it is lived: what we mean by "now", how we make sense of past and future events, and the idea of eternity. (shrink)

This work subjects the fundamental ideas of Derrida, Lacan, Barthes and their followers to an examination and demonstrates the baselessness of post-Saussurean claims about the relations between language, reality and self.

La Philosophie critique de l'histoire Raymond Aron montre ici comment Dilthey, Rickert, Simmel et Weber s'interrogent sur l'origine de la valeur (subjective et objective) des formes de la science historique : si toutes les démarches de cette science son solidaires d'une volonté et d'une situation, l'historien peut-il écrire une " histoire qui puisse être vraie pour tous "? Si la relativité historique semble un " fait ", qu'en est-il de la vérité universelle, exigée par la raison? D'autre part, quel (...) rapport établir entre les perspectives individuelles, partielles, et la totalité de l'évolution? Cette théorie allemande de l'histoire, fondée sur la relativité de la connaissance, constitue la seule tentative véritable d'une critique de la Raison historique. Raymond Aron (1905-1983) Philosophe, sociologue et historien français. Ses écrits furent porteurs d'une réflexion sur l'engagement de l'intellectuel dans son siècle. (shrink)

Many existing studies postulate that in developing economies philanthropy tends to dominate in the CSR orientation delivered by organizations and expected by local populations. To assess this in the emerging economy of Dubai in the United Arab Emirates, we conducted a preliminary investigation of how locals are responding to the growing number of CSR initiatives that are being implemented in the Emirate. Moreover, given that scholars have argued that Islamic principles of philanthropy should guide CSR initiatives in Muslim countries, we (...) also consider if our Emirati respondents connect CSR with Islamic philanthropy. Results from our survey of 267 local Muslim consumers in Dubai indicate that CSR is not typically equated with philanthropy. In addition, respondents displayed an appreciation of the economic benefits that CSR can generate. The implication is that organizations in Dubai no longer need to base their CSR on the platform of Islamic philanthropy as many scholars have argued. Our findings are significant for the wider Gulf region in that they suggest that in wealthy emerging nations, CSR may not be predominantly interpreted as the corporate philanthropy which is needed in poorer developing economies for the provision of infrastructure, schools, hospitals, and housing, and which in some Muslim contexts is also implemented because of local religious values. (shrink)

This chapter contains sections titled: The Pirate and Performance‐Enhancing Drugs Life and Times Performance‐Enhancing Drugs The Paternalistic Argument The Argument from the Harm Principle The Argument from Distorted Values The Argument from the Prisoner's Dilemma Why r‐EPO Should Continue to be Banned The Pirate's False Treasure Notes.

This chapter contains sections titled: Acknowledgments References.

(1989). BLOOD IS THICKER THAN WATER: DON'T FORSAKE THE FAMILY JEWELS. Philosophical Papers: Vol. 18, No. 3, pp. 265-280. doi: 10.1080/05568648909506323.

Deepens our understanding of power through a survey of how its dynamics have been understood from ancient times to the present. Frequently understood in simplistic and often highly negative terms, the concept of power has proven to be both uncommonly intriguing and maddeningly elusive. In Power, Raymond Angelo Belliotti begins by fashioning a general definition of power that is refined enough to capture the numerous types of power in all their multifaceted complexity. He then proceeds in a series of (...) discrete yet thematically connected meditations to explore the meaning of power in ancient, modern, and contemporary thought. In grappling with the critical questions surrounding the accumulation, distribution, and exercise of personal and social power, this work allows us to confront fundamental questions of who we are and how we might live better lives. “Power is an impressive project for its breadth and insight. Belliotti offers an exhaustive discussion of the philosophical notion of power, which deepens the reader’s understanding of power and provides a ‘powerful’ tool for assessing the proper uses of and abuses of social and dyadic power relations. The book is rich with material, expertly organized, and written in a clear and accessible style.” — Kimberly Blessing, Buffalo State, The State University of New York. (shrink)

W. David Solomon sits at the very center of the revival of virtue ethics. Solomon's work extended what began with the publication of G. E. M. Anscombe's "Modern Moral Philosophy" (1958) by solidifying virtue ethics as a viable approach within contemporary moral philosophy. Beyond the Self: Virtue Ethics and the Problem of Culture comprises twelve chapters: eleven that employ Solomon's work and legacy, followed by a twelfth concluding chapter by Solomon himself. Each chapter deepens and develops virtue ethics as a (...) rich intellectual tradition rooted in Aristotle and Thomas Aquinas. Editor Raymond Hain divides the volume into three sections. The first addresses the historical contexts of happiness, justice, and mercy in the tradition of Aristotle and Thomas Aquinas. The second turns to recent themes in normative ethics, focusing on topics such as morality, virtue, and egoism. The third discusses broader ethical issues with significant cultural implications, such as human dignity, physician-assisted suicide, and secularization. Beyond the Self uncovers the shortcomings of contemporary moral philosophy and the depth and capacity of the Aristotelian and Thomistic traditions, reminding the reader that classical virtue ethics remains the most promising framework for understanding the moral life. Contributors include: Michael Beaty, Kevin L. Flannery, Raymond Hain, John Haldane, Thomas Hibbs, Irfan Khawaja, Alasdair MacIntyre, John O'Callaghan, Bryan C. Pilkington, W. David Solomon, Christopher Toner, and Candace Vogler. (shrink)

This work offers the first critical edition of Raymond Sebond's Theologie naturelle translated by Montaigne, with indexing of all the variants from the two editions of 1569 and 1581, and a transcription of the Latin text of the Theologia naturalis.

Negative words or integrated negations: Nothingness, the completely Other, Nothing, the Infinite, the Unknowable, the Subconscious all have a certain poetic overtone. But we must be careful of linguistic sleight-of-hand taken for an idea.

A central task of schooling is to cultivate reasonableness in students. In this chapter we show how the teaching of reasonableness can be practiced successfully in secondary schools, using materials from the Western Australian curriculum. The discussion proceeds in four stages. We first defend the claim that the teaching of reasonable is a key aim of schooling. Here we offer an account of reasonableness, which we take to be both a skill and a disposition. Students learn reasonableness through the practice (...) of specific skills such as open and curious questioning, clarifying, and categorizing, and evaluating the merits of each contribution toward the problem or question under consideration. Reasonableness comes about as a joint commitment between the individual and the group to be honest in their views, to take care of those views, and for everyone to recognize that each member is a partial bearer of truth. Secondly, we discuss the pedagogies that cultivate reasonableness. The Philosophical Community of Inquiry is a natural pedagogy for this purpose. This can be supplemented with the thinking tools approach of Cam’s Twenty Thinking Tools or Harvard Project Zero’s Thinking Routines. In addition, we introduce our own two skill-building exercises, the Reasoning Game and the Argument Game. Thirdly, we show how this approach can be applied not just in Philosophy classes, but in the Humanities and Social Sciences. We argue that our approach brings these subjects to life, it develops understanding and reasonableness, and it bumps up student engagement. Fourthly, we discuss the assessment of reasonableness. In this type of learning environment, the way students perform in the philosophical community of inquiry is the focus of assessment. The desirable qualities of being reasonable become the assessment criteria for an on-balanced judgment about the student. (shrink)

This is a new edition of a classic textbook in health care ethics, one that offers an alternative to the principle-based approach from Beauchamp and Childress (Principles of Biomedical Ethics, now in its seventh edition from OUP) and traditional Catholic approaches of Ashley and O'Rourke. In the early chapters Devettere spells out the meaning of ethics and the importance of prudential reasoning in seeking the good life. The rest of the book deals with issues and cases, including determinations of life (...) and death, reproduction and research and genetics, and the distribution of health care. In this fourth edition Devettere updates all chapters and adds new cases and new sections on the following: neuroscience, social psychology, overriding advance directives, studies on the fetus, the palliative care movement, cardiopulmonary resuscitation, pharmacists and reproductive issues, prenatal life and abortion, neonatal testing and mandatory vaccinations, the US governments' STD research in Guatemala, the emergence of biobanks, facial transplantations, genetic testing, legal issues around the Affordable Care Act, and more. This is an accessible and comprehensive textbook covering all aspects of the field. (shrink)