Originally published in 1990. Examining epistemic justification, truth and logic, this book works towards a holistic theory of knowledge. It discusses evidence, belief, reliability and many philosophical theories surrounding the nature of true knowledge. A thorough Preface updates the main work from when it was written in 1976 to include theories ascendant in the ‘80s.

The author uses a series of examples to illustrate two versions of a new, nonprobabilist principle of epistemic rationality, the special and general versions of the metacognitive, expected relative frequency principle. These are used to explain the rationality of revisions to an agent’s degrees of confidence in propositions based on evidence of the reliability or unreliability of the cognitive processes responsible for them—especially reductions in confidence assignments to propositions antecedently regarded as certain—including certainty-reductions to instances of the law of excluded (...) middle or the law of noncontradiction in logic or certainty-reductions to the certainties of probabilist epistemology. The author proposes special and general versions of the MERF principle and uses them to explain the examples, including the reasoning that would lead to thoroughgoing fallibilism—that is, to a state of being certain of nothing. The author responds to the main defenses of probabilism: Dutch Book arguments, Joyce’s potential accuracy defense, and the potential calibration defenses of Shimony and van Fraassen by showing that, even though they do not satisfy the probability axioms, degrees of belief that satisfy the MERF principle minimize expected inaccuracy in Joyce’s sense; they can be externally calibrated in Shimony and van Fraassen’s sense; and they can serve as a basis for rational betting, unlike probabilist degrees of belief, which, in many cases, human beings have no rational way of ascertaining. The author also uses the MERF principle to subsume the various epistemic akrasia principles in the literature. Finally, the author responds to Titelbaum’s argument that epistemic akrasia principles require that we be certain of some epistemological beliefs, if we are rational. (shrink)

The Routledge Handbook of the Philosophy of Sport is a landmark publication in sport studies. It goes further than any book has before in tracing the contours of the discipline of the philosophy of sport and in surveying the core themes, approaches and theories that form its disciplinary fabric. The book explores the ways in which an understanding of philosophy can inform our understanding of important prevailing issues in sport. Edited by two of the most significant figures in the development (...) of the philosophy of sport, Mike McNamee and Bill Morgan, and with contributions from many of the world’s leading sport philosophers, this is an invaluable companion reference volume for any course in the social scientific study of sport, and an essential addition to the bookshelf of any serious scholar of the philosophy and/or ethics of sport. (shrink)

A critical study of John Searle's Minds, Brains and Science (Cambridge, MA: Harvard University Press, 1984).

Stace and others maintain that mystical consciousness reveals the identity of selves and, therefore, provides a justification for altruism. Zaehner argues that some types of mystical consciousness apparently reveal the identity of such opposites as good and evil, and Danto holds that mystical consciousness involves a transcendence of all distinctions, including moral distinctions. Thus, for both Zaehner and Danto mysticism undercuts morality. The author attempts to show that these positions are defective and suggests that there are no important epistemic or (...) logical connections between mystical consciousness and morality. (shrink)

The ‘default mode’ network refers to cortical areas that are active in the absence of goal-directed activity. In previous studies, decreased activity in the ‘default mode’ has always been associated with increased activation in task-relevant areas. We show that the induction of hypnosis can reduce anterior default mode activity during rest without increasing activity in other cortical regions. We assessed brain activation patterns of high and low suggestible people while resting in the fMRI scanner and while engaged in visual tasks, (...) in and out of hypnosis. High suggestible participants in hypnosis showed decreased brain activity in the anterior parts of the default mode circuit. In low suggestible people, hypnotic induction produced no detectable changes in these regions, but instead deactivated areas involved in alertness. The findings indicate that hypnotic induction creates a distinctive and unique pattern of brain activation in highly suggestible subjects. (shrink)

Symbols in computer programs are not necessarily isomorphic in form or capability to neural processes. Representations in our models are stored descriptions of the world and human behavior, created by a human interpreter; representations in the brain are neither immutable forms nor encoded in some language. Although the term " symbol " can be usefully applied to describe words, smoke signals, neural maps, and graphic icons, a science of symbol processing requires distinguishing between the structural, developmental, and interactive nature of (...) different forms of representing. (shrink)

In this comment I discuss the role of an ethics case consultant in an institutional setting, in contrast to situations when an ethics consultant serves an individual client. In the former situation, I believe the case consultant should articulate ethical issues, options, and arguments, but not recommend a particular course of conduct. In the latter situation, the role of the ethics consultant can be defined and determined in negotiations with the client.

The purpose of this study is to assess the intention of typically developing peers towards learning in the classroom with students with Autism Spectrum Disorder. In developing countries, such as Ghana, the body of literature on the relationship between students with disabilities and typically developing peers has been sparsely studied. Using Ajzen's theory of planned behaviour as a theoretical framework for this study, 516 typically developing students completed four scales representing belief constructs, attitudes, subjective norms, and perceived behavioural controls, hypothesised (...) to predict behavioural intention. The data were subjected to a t-test, analysis of variance, and structural equation modelling. The modelling confirmed the combining ability of attitude, subjective norms, and perceived behavioural controls to predict intention. We conclude by revealing the need for policymakers to consider designing programmes aimed towards promoting social relationships between students with ASD and typically developing peers. (shrink)

The MER created a virtual experience of being on Mars. This book examines how the MER has changed the nature of planetary field science.

Is 50 considered “old”? When do we stop being considered “young”? If individuals could choose to be any age, what would it be? In a sample of 502,548 internet respondents ranging in age from 10 to 89, we examined age differences in aging perceptions (e.g., how old do you feel?) and estimates of the timing of developmental transitions (e.g., when does someone become an older adult?). We found that older adults reported older perceptions of aging (e.g., choosing to be older, (...) feeling older, being perceived as older), but that these perceptions were increasingly younger than their current age. The age to which individuals hope to live dramatically increased after age 40. We also found that older adults placed the age at which developmental transitions occurred later in the life course. This latter effect was stronger for transitions involving middle-age and older adulthood compared to transitions involving young adulthood. The current study constitutes the largest study to date of age differences in age perceptions and developmental timing estimates and yielded novel insights into how the aging process may affect judgments about the self and others. (shrink)

In the 1970s, we conceived of a rule explanation as supplying the causal and social context that justifies a rule, an objective documentation for why a rule is correct. Today we would call such descriptions post-hoc design rationales, not proving the rules? correctness, but providing a means for later interpreting why the rule was written and facilitating later improvements.

Book reviewed in this article: Sex, Drugs, Death and the Law: An Essay on Human Rights and Overcriminalization. By David A. J. Richards. Totowa, NJ: Rowman and Littlefield, 1982. xii + 316 pp. $26.95.

The increasing role played by medical ethicists in the clinical setting both as teachers and consultants has brought with it a demand for new methodologies that speak more precisely to the multiple problems encountered in actual attempts at case resolution. Some of these moves have to do with a revival of the truly classic case study approach to ethics, casuistry. This approach is anchored in the revelatory text of Jonsen and Toulmin, TheAbuseofCasuistry. A fine example of this methodology is an (...) article in TheJournalofClinicalEthics, Conjoined to this approach is a renewed interest in virtue ethics. The groundwork for this was laid by MacIntyre's masterful history of its demise in AfterVirtue. A clear and concise application of this ancient but always new approach is given in Pellegrino and Thomasma's book TheVirtuesinMedicalPractice. This way of doing ethics is particularly congenial to the practice of healthcare ethics in that it understands that virtue is just a rather fancy name for a good habit or skill. Since the practice of clinical medicine is quintessentially the learning and application of a range of often highly complex patterns of professional abilities and skills, a virtue ethics approach will allow for the concomitant development of a whole set of ethical skills. But both casuistry and virtue ethics may well be seen to be operative in a larger context now known as narrative ethics. (shrink)

John H. Evans’s views on the multiple roles of healthcare ethics consultants are based on his claim that bioethics is a “distinct profession” that has a “system of abstract knowledge.” This response to Professor Evans disputes both of his claims. It is argued that clinical ethicists are consultants but not professionals. Their roles as consultants require more than one abstract form of knowledge (principlism). Instead, clinical ethicists rely upon a variety of ethical perspectives and other skills to help resolve conflicts (...) and facilitate healthcare decisions and policy making, whether it is in clinical, research, policy, or organizational contexts. The credibility and effectiveness of clinical ethicists depend upon their knowledge of ethics, their practical experience, and personal abilities, not one form of abstract knowledge. (shrink)

Zeno's challenge to the usual mathematical characterization of extension is still with us. Butchvarov, considering the limits of ontological analysis, writes, “I shall not explore [the decision to accept the infinite regress in which the pursuit of the analytical ideal is involved], beyond noting that the infinite divisibility of space is the reductio ad absurdum of any attempt to understand space in terms of its ultimate, simple parts.” Grünbaum states this problem, commonly known as the Measure Paradox, concisely, “[How can (...) one conceive] of an extended continuum as an aggregate of unextended elements?”. (shrink)

Increasingly, medical students are required to face up to ethical issues in their training and practice. At the same time, there is growing interest in philosophy courses in the ethical issues raised by medical practice. This textbook, designed primarily for students of medicine, develops the issues to a philosophical level complex enough to be satisfying to students of philosophy as well as MA students on applied ethics courses. The author advocates an approach to medical ethics which breaks out of the (...) straitjacket of the narrow choice between utilitarian or deontological theory, and contains a valuable discussion of practical wisdom. It maintains a balance between case studies and philosophical arguments - which are developed in a historical context, and will be of interest at all levels of the medical profession. (shrink)