The last twenty-five years of published literature and curriculum development in bioethics suggest that the field enjoys a successful and stable marriage to philosophical ethical theory. However, the next twenty-five years could be very different. I believe the marriage is troubled. Divorce is conceivable and perhaps likely. The most philosophical parts of bioethics may retreat to philosophy departments, while bioethics continues on its current course toward a more interdisciplinary and practical field.I make no presumption that bioethics is integrally linked to (...) philosophical ethical theory. Indeed, I assume that the connection is contingent and fragile. Many individuals in law, theological ethics, political theory, the social and behavioral sciences, and the health professions carefully address mainstream issues of bioethics without finding ethical theory essential or breathtakingly attractive. This is not surprising. Moral philosophers have traditionally formulated theories of the right, the good, and the virtuous in the most general terms. (shrink)

I evaluate Schurz's proposed meta-inductive justification of induction, a refinement of Reichenbach's pragmatic justification that rests on results from the machine learning branch of prediction with expert advice. My conclusion is that the argument, suitably explicated, comes remarkably close to its grand aim: an actual justification of induction. This finding, however, is subject to two main qualifications, and still disregards one important challenge. The first qualification concerns the empirical success of induction. Even though, I argue, Schurz's argument does not need (...) to spell out what inductive method actually consists in, it does need to postulate that there is something like the inductive or scientific prediction strategy that has so far been significantly more successful than alternative approaches. The second qualification concerns the difference between having a justification for inductive method and for sticking with induction for now. Schurz's argument can only provide the latter. Finally, the remaining challenge concerns the pool of alternative strategies, and the relevant notion of a meta-inductivist's optimality that features in the analytic step of Schurz's argument. Building on the work done here, I will argue in a follow-up paper that the argument needs a stronger dynamic notion of a meta-inductivist's optimality. (shrink)

The no-free-lunch theorems promote a skeptical conclusion that all possible machine learning algorithms equally lack justification. But how could this leave room for a learning theory, that shows that some algorithms are better than others? Drawing parallels to the philosophy of induction, we point out that the no-free-lunch results presuppose a conception of learning algorithms as purely data-driven. On this conception, every algorithm must have an inherent inductive bias, that wants justification. We argue that many standard learning algorithms should rather (...) be understood as model-dependent: in each application they also require for input a model, representing a bias. Generic algorithms themselves, they can be given a model-relative justification. (shrink)

This paper offers an ethical framework for the development of robots as home companions that are intended to address the isolation and reduced physical functioning of frail older people with capacity, especially those living alone in a noninstitutional setting. Our ethical framework gives autonomy priority in a list of purposes served by assistive technology in general, and carebots in particular. It first introduces the notion of “presence” and draws a distinction between humanoid multi-function robots and non-humanoid robots to suggest that (...) the former provide a more sophisticated presence than the latter. It then looks at the difference between lower-tech assistive technological support for older people and its benefits, and contrasts these with what robots can offer. This provides some context for the ethical assessment of robotic assistive technology. We then consider what might need to be added to presence to produce care from a companion robot that deals with older people’s reduced functioning and isolation. Finally, we outline and explain our ethical framework. We discuss how it combines sometimes conflicting values that the design of a carebot might incorporate, if informed by an analysis of the different roles that can be served by a companion robot. (shrink)

This article poses a challenge to Schurz’s proposed metainductive justification of induction. It is argued that Schurz’s argument requires a notion of optimality that can deal with an expanding pool of prediction strategies.

: Phenomena of moral conflict and disagreement have led writers in ethics to two antithetical conclusions: Either valid moral distinctions hold universally or they hold relative to a particular and contingent moral framework, and so cannot be applied with universal validly. Responding to three articles in this issue of the Journal that criticize his previously published views on the common morality, the author maintains that one can consistently deny universality to some justified moral norms and claim universality for others. Universality (...) is located in the common morality and nonuniversality in other parts of the moral life, called "particular moralities." The existence of universal moral standards is defended in terms of: (1) a theory of the objectives of morality, (2) an account of the norms that achieve those objectives, and (3) an account of normative justification (both pragmatic and coherentist). (shrink)

The essays collected here demonstrate that the philosophy of habit is not confined to the work of just a handful of thinkers, but traverses the entire history of Western philosophy and continues to thrive in contemporary theory. A History of Habit: From Aristotle to Bourdieu is the first book to document the richness and diversity of this history. It demonstrates the breadth, flexibility, and explanatory power of the concept of habit as well as its enduring significance. It makes the case (...) for habit’s perennial attraction for philosophers, psychologists, and sociologists. (shrink)

In this thesis I investigate the theoretical possibility of a universal method of prediction. A prediction method is universal if it is always able to learn from data: if it is always able to extrapolate given data about past observations to maximally successful predictions about future observations. The context of this investigation is the broader philosophical question into the possibility of a formal specification of inductive or scientific reasoning, a question that also relates to modern-day speculation about a fully automatized (...) data-driven science. I investigate, in particular, a proposed definition of a universal prediction method that goes back to Solomonoff and Levin. This definition marks the birth of the theory of Kolmogorov complexity, and has a direct line to the information-theoretic approach in modern machine learning. Solomonoff's work was inspired by Carnap's program of inductive logic, and the more precise definition due to Levin can be seen as an explicit attempt to escape the diagonal argument that Putnam famously launched against the feasibility of Carnap's program. The Solomonoff-Levin definition essentially aims at a mixture of all possible prediction algorithms. An alternative interpretation is that the definition formalizes the idea that learning from data is equivalent to compressing data. In this guise, the definition is often presented as an implementation and even as a justification of Occam's razor, the principle that we should look for simple explanations. The conclusions of my investigation are negative. I show that the Solomonoff-Levin definition fails to unite two necessary conditions to count as a universal prediction method, as turns out be entailed by Putnam's original argument after all; and I argue that this indeed shows that no definition can. Moreover, I show that the suggested justification of Occam's razor does not work, and I argue that the relevant notion of simplicity as compressibility is already problematic itself. (shrink)

This paper compares Dewey's and Russell's views of "immediate knowledge." Dewey was perhaps mistaken in attributing to Russell the view that immediate sense data provide incorrigible foundations for knowledge. Russell's characterization of sensing plus attention as the most immediate knowing of which we have experience nevertheless remains a valid target of Dewey's criticisms. These two philosophers developed very different theories of logic and knowledge, language and experience. Given the reconstructed notions of experience and knowledge at the root of Dewey's logical (...) theory, referring to knowledge as immediate or nearly immediate constitutes a serious category mistake. (shrink)

Douven (in press) observes that Schurz's meta-inductive justification of induction cannot explain the great empirical success of induction, and offers an explanation based on computer simulations of the social and evolutionary development of our inductive practices. In this paper, I argue that Douven's account does not address the explanatory question that Schurz's argument leaves open, and that the assumption of the environment's induction-friendliness that is inherent to Douven's simulations is not justified by Schurz's argument.

Contemporary experimental philosophers sometimes use versions of an argument from the history of philosophy to defend the claim that what they do is philosophy. Although experimental philosophers conduct surveys and carry out what appear to be experiments in psychology, making them methodologically different from most analytic philosophers working today, techniques like theirs were not out of the ordinary in the philosophy of the past, early modern philosophy in particular. Or so some of them argue. This paper disputes the argument, citing (...) important differences between early modern philosopher-scientists – Descartes, Hobbes and Boyle – and their supposed modern counterparts. Although there is some continuity between early modern philosopher-scientists and the contemporary experimentalists, it is mostly a continuity of interest in empirically informed philosophy, not a distinctively experimental philosophy. (shrink)

In the first two decades of the century Vvedenskij developed and defended what he took to be an original argument in support of the impossibility of metaphysical knowledge. This argument, which he hailed as a "proof," involved an examination of the four laws of thought alone. As it made no appeal to the highly technical analyses found in Kant's first Critique, Vvedenskij considered it to be more efficient and thereby effective than Kant's own arguments. Although Vvedenskij's estimation of his accomplishment (...) actually increased with the passage of time, the ‘proof’ rested on highly dubious assumptions. (shrink)

_Moral Theory and Anomaly_ considers and rejects the claim that moral theory is too utopian to apply properly to worldly pursuits like political office holding and business, and too patriarchal and speciesist to generate a theory of justice applicable to women and the non-human natural world.

ABSTRACT ABSTRACT: Nietzsche, we are often told, had an account of 'self' or 'mind' or a 'philosophical psychology', in which what he calls our 'drives' play a highly significant role. This underpins not merely his understanding of mind, in particular, of consciousness and action. but also his positive ethics, be they understood as authenticity, freedom, knowledge, autonomy, self-creation, or power. But Nietzsche did not have anything like a coherent account of 'the drives' according to which the self, the relationship between (...) thought and action, or consciousness could be explained; consequently, he did not have a stable account of drives on which his positive ethics could rest. By this, I do not mean that his account is incomplete or that it is philosophically indefensible: both would leave open, misleadingly, the possibility of a rational reconstruction of Nietzsche’s views; both would already assume more unity and coherence than we find in his texts. Specifically, as I show through detailed analysis, Nietzsche provides varied and inconsistent accounts of what a 'drive' is, how much we can know about drives, and the relationship between drives and conscious deliberations about action. I conclude by questioning the hunt for a Nietzschean theory: is this the best way to be reading him? (shrink)

The aim of this paper is to begin a conversation about how we read and write about Nietzsche and, related to this, other figures in the history of philosophy. The principle of charity can appear to be a way to bridge two dif-ferent interpretative goals: getting the meaning of the text right and offering the best philosophy. I argue that the principle of charity is multiply ambiguous along three different dimensions, which I call “unit,” “mode,” and “strength”: consequently, it is (...) not a single, neutral or independent principle to which we can helpfully appeal and it cannot, in itself, perform this bridging function. Nietzsche, I suggest, is particularly ill suited to some forms of charitable reading. I compare charity to what I call “misreporting” a philosopher’s words, in order to highlight some problematic structural similarities. Finally, I assess what charity might be doing instead, if it is not intended to bridge meaning and best philosophy. (shrink)

The key role that animals play in our aesthetic appreciation of the natural world has only gradually been highlighted in discussions in environmental aesthetics. In this article I make use of the phenomenological notion of 'perceptual sense' as developed by Merleau-Ponty to argue that open-ended expressive-responsive movement is the primary aesthetic ground for our appreciation of animals. It is through their movement that the array of qualities we admire in animals are manifest qua animal qualities. Against functionalist and formalist accounts, (...) I defend and develop an account of expressive-responsive movement as the primary perceptual sense of animals. I go on to suggest that the primacy of movement in the aesthetic appreciation of animals is also the primary sense of animal 'wildness', and that a key part of the rewilding paradigm should be the development of such appreciation. (shrink)

: The belief persists in philosophy, religion, science, and popular culture that some special cognitive property of persons like self-consciousness confers a unique moral standing. However, no set of cognitive properties confers moral standing, and metaphysical personhood is not sufficient for either moral personhood or moral standing. Cognitive theories all fail to capture the depth of commitments embedded in using the language of "person." It is more assumed than demonstrated in these theories that nonhuman animals lack a relevant form of (...) self-consciousness or its functional equivalent. Although nonhuman animals are not plausible candidates for moral personhood, humans too fail to qualify as moral persons if they lack one or more of the conditions of moral personhood. If moral personhood were the sole basis of moral rights, then these humans would lack rights--and precisely for the reasons that nonhuman animals would. (shrink)

Develops a framework using resources from Rawls and Nagel for understanding injustices due to the sale of defective real estate instruments by banks whose solvency was globally important in 2007-2008. The leaderships of some of these banks were partly responsible for the world financial crisis that started in 2008.

As incoming Editor and Deputy Editor we describe our impression of the current situation that those committed to understanding and upholding environmental values find themselves in. We consider some of the factors that make enviornmental concern difficult to maintain, including conditions that affect us as academics, publishers, global citizens and activists. We describe some of the emerging trends that have appeared in Environmental Values in recent years, in philosophy, ecological economics, critical social science and widening interdisciplinarity in the environmental humanities. (...) We highlight the journal's commitment to engaged, plural and open investigation of environmental values and consider what we might expect and hope for in the coming years. (shrink)

This paper explores ethical issues raised by whole slide image-based computational pathology. After briefly giving examples drawn from some recent literature of advances in this field, we consider some ethical problems it might be thought to pose. These arise from the tension between artificial intelligence research—with its hunger for more and more data—and the default preference in data ethics and data protection law for the minimisation of personal data collection and processing; the fact that computational pathology lends itself to kinds (...) of data fusion that go against data ethics norms and some norms of biobanking; the fact that AI methods are esoteric and produce results that are sometimes unexplainable and the fact that computational pathology is particularly dependent on scanning technology manufacturers with interests of their own in profit-making from data collection. We shall suggest that most of these issues are resolvable. (shrink)

Bulk collection involves the mining of large data sets containing personal data, often for a security purpose. In 2013, Edward Snowden exposed large scale bulk collection on the part of the US National Security Agency as part of a secret counter-terrorism effort. This effort has mainly been criticised for its invasion of privacy. I argue that the right moral argument against it is not so much to do with intrusion, as ineffectiveness for its official purpose and the lack of oversight (...) by security cleared legislators. It also lends itself to government "domination" (in Pettit's sense) of those who are subject to it. (shrink)

Algorithmic information theory gives an idealized notion of compressibility that is often presented as an objective measure of simplicity. It is suggested at times that Solomonoff prediction, or algorithmic information theory in a predictive setting, can deliver an argument to justify Occam’s razor. This article explicates the relevant argument and, by converting it into a Bayesian framework, reveals why it has no such justificatory force. The supposed simplicity concept is better perceived as a specific inductive assumption, the assumption of effectiveness. (...) It is this assumption that is the characterizing element of Solomonoff prediction and wherein its philosophical interest lies. (shrink)

In England and Wales, Section 15 of the Sexual Offences Act criminalizes the act of meeting a child—someone under 16—after grooming. The question to be pursued in this paper is whether grooming—I confine myself to online grooming—is justly criminalized. I shall argue that it is. One line of thought will be indirect. I shall first try to rebut a general argument against the criminalization of acts that are preparatory to the commission of serious offences. Grooming is one such act, but (...) there are others, sometimes associated with terrorism. According to me, the general argument misapplies certain considerations about autonomy that are alleged to be in force in other areas of criminal law. Contrary to that general argument, criminalization of preparatory acts does not, in general, bypass the agency of citizens. Moreover, the criminalization of preparatory acts can disrupt activity that would have led to very serious crime, and with relatively low costs to the perpetrators, costs that reflect the non-occurrence of the more serious crime. There is evidence that grooming is harmful in itself, and so another point against the general argument is its assumption that preparatory offences are often harmless or at least victimless. There are objections to some of the undercover policing techniques that lead to a Section 15 prosecution, but these objections are not all weighty. (shrink)

For all its apparent debate bioethical discourse is in fact very narrow. The discussion that occurs is typically within limited parameters, rarely fundamental. Nor does it accommodate divergent perspectives with ease. The reason lies in its ideology and the political and economic perspectives that ideology promotes. Here the ideology of bioethics' fundamental axioms is critiqued as arbitrary and exclusive rather than necessary and inclusive. The result unpacks the ideological and political underpinnings of bioethical thinking and suggests new avenues for a (...) broader debate over fundamentals, and a different approach to bioethical debate. (shrink)

"Modern" philosophy in the West is said to have begun with Bacon and Descartes. Their methodological and metaphysical writings, in conjunction with the discoveries that marked the seventeenth-century scientific revolution, are supposed to have interred both Aristotelian and scholastic science and the philosophy that supported it. But did the new or "modern" philosophy effect a complete break with what preceded it? Were Bacon and Descartes untainted by scholastic influences? The theme of this book is that the new and traditional philosophies (...) have much more in common than the orthodox account suggests. The contributors consider not only modernity in metaphysics and the sciences but also the claims of Machiavelli, Hobbes, and Spinoza to have invented "modern" ethics and politics. These two aspects of "modernity" in philosophy are connected for the first time. The book offers a broad view of the early modern philosophers, covering not only the much-studied major figures but also relatively neglected writers: Mersenne, Gassendi, White, and Sergeant. (shrink)

In this paper I discuss the view that the appropriate concept of competence is a decision‐relative one: that a person may be competent to make one decision but not another. The argument that I present is that neither of the two competing theories supporting the decision‐relative approach, internalism and externalism, can provide a coherent explanation of why a person’s competence should be thought to be relative to a particular decision. On the one hand, internalism, which regards competence as exhaustively a (...) matter of the person’s understanding, fails to identify the specific skills or content that would warrant linking a specific decision with competence, and thus cannot provide an account of decision‐relative that parallels task‐relative. On the other hand, externalism, which regards competence as a matter of the person’s understanding in relation to external elements such as risk, cannot adequately defend why a person’s competence to make a decision should ‘track’ the level of probable harm that results from the decision. (shrink)

I first offer an account of serious crime that goes beyond victimizing crimes committed by individuals against other individuals. This approach extends the well-known framework offered by von Hirsch and Jareborg that relates seriousness of crime to different standards of living that can be enjoyed by victims of crime as the result of crime. The revised account of serious crime is then related to the idea of preventing serious crime by the introduction of offences consisting of steps in the preparation (...) of serious crime. (shrink)

It was as a political thinker that Thomas Hobbes first came to prominence, and it is as a political theorist that he is most studied today. Yet the range of his writings extends well beyond morals and politics. Hobbes had distinctive views in metaphysics and epistemology, and wrote about such subjects as history, law, and religion. He also produced full-scale treatises in physics, optics, and geometry. All of these areas are covered in this Companion, most in considerable detail. The volume (...) also reflects the multidisciplinary nature of current Hobbes scholarship by drawing together perspectives that are now being developed in parallel by philosophers, historians of science and mathematics, intellectual historians, political scientists, and literary theorists. (shrink)

What if thought freed itself from common sense and decided to think only at the extreme point of its singularity? What if it mischievously practiced the bias of paradox, instead of complacently accepting its citizenship in the doxa? What if it thought difference differentially, instead of searching out the common elements underlying difference?1.

Jecker’s paper focuses on the value of sex and sexuality in the lives of older people, and she argues that there is nothing wrong with the use of sex robots to realise that value. She concedes that sex robots marketed today are overwhelmingly designed for heterosexual males, and that their appearance corresponds to certain objectionable stereotypes of sexually attractive women, and of exciting sexual practices. Still, she says, sex robots do not have to be like that, and a less stereotype-ridden (...) design could take away the sexism, heterosexualism and ageism of current ones. I am sympathetic to these conclusions. But I believe that they are not general enough, and I want to take issue with the argumentative strategy that leads to them. The conclusions are not general enough, because disability or bad circumstantial luck can lead to the damaging absence of sex in the lives of people from many adult age groups, not just people in their 70s and 80s. Jecker’s paper starts with the case of couples whose sex life deteriorates with old age. But there are also many people, whether disabled or not, who fail to acquire a sex life, and who want one, sometimes desperately. They, too, have a problem that a suitable sex robot might help …. (shrink)

Robert Baker and Laurence McCullough argue that the "applied ethics model" is deficient and in need of a replacement model. However, they supply no clear meaning to "applied ethics" and miss most of what is important in the literature on methodology that treats this question. The Baker-McCullough account of medical and applied ethics is a straw man that has had no influence in these fields or in philosophical ethics. The authors are also on shaky historical grounds in dealing with two (...) problems: (1) the historical source of the notion of "practical ethics" and (2) the historical source of and the assimilation of the term "autonomy" into applied philosophy and professional ethics. They mistakenly hold (1) that the expression "practical ethics" was first used in a publication by Thomas Percival and (2) that Kant is the primary historical source of the notion of autonomy as that notion is used in contemporary applied ethics. (shrink)

Depression is a highly recurrent disorder with limited treatment alternatives for reducing risk of subsequent episodes. Acceptance and commitment therapy (ACT) and attention bias modification (ABM) separately have shown some promise in reducing depressive symptoms. This study investigates (a) if group-based ACT had a greater impact in reducing residual symptoms of depression over a 12-month follow-up than a control condition, and (b) if preceding ACT with ABM produced added benefits. This multisite study consisted of two phases. In phase 1, participants (...) with a history of depression, currently in remission (N= 244), were randomized to either receive 14 days of ABM or a control condition. In phase 2, a quasi- experimental design was adopted, and only phase-1 participants from the Sørlandet site (N= 124) next received an 8-week group-based ACT intervention. Self-reported and clinician-rated depression symptoms were assessed at baseline, immediately after phase 1 and at 1, 2, 6, and 12 months after the conclusion of phase 1. At 12-month follow-up, participants who received ACT exhibited fewer self-reported and clinician-rated depressive symptoms. There were no significant differences between ACT groups preceded by ABM or a control condition. There were no significant differences between ACT groups preceded by ABM or a control condition. Group-based ACT successfully decreased residual symptoms in depression over 12 months, suggesting some promise in preventing relapse. (shrink)

Using an observational sample of players of a simple online game, we are able to trace the development of skill in that game. Information on playing time, and player location, allows us to estimate time of day during which practice took place. We compare those whose breaks in practice probably contained a night's sleep and those whose breaks in practice probably did not contain a night's sleep. Our analysis confirms experimental evidence showing a benefit of spacing for skill learning, but (...) it fails to find any additional benefit of sleeping during a break from practice. We discuss reasons why the well-established phenomenon of sleep consolidation might not manifest in an observational study of skill development. We put the spacing effect into the context of the other known influences on skill learning: improvement with practice, and individual differences in initial performance. Analysis of performance data from games allows experimental results to be demonstrated outside of the lab and for experimental phenomenon to be put in the context of the performance of the whole task. (shrink)

Agents sometimes feel free to resort to underhand or brutal measures in coping with an emergency. Because emergencies seem to relax moral inhibitions as well as carrying the risk of great loss of life or injury, it may seem morally urgent to prevent them or curtail them as far as possible. I discuss some cases of private emergency that go against this suggestion. Prevention seems morally urgent primarily in the case of public emergencies. But these are the responsibility of defensibly (...) partisan agents, and call for the exercise of powers that are legitimately hard to control. Philosophical standards for dealing with public emergency often ignore these facts, and are unduly moralistic as a result. (shrink)

This article looks at the Indian canonical sources for Mādhyamika Buddhist refusals to personally endorse truth claims, even about customary matters. These sources, on a natural reading, seem to suggest that customary truth is only widespread error and that the Buddhist should do little more than duplicate, or acquiesce in, what the common man recognizes about it. The combination of those Indian canonical themes probably contributed to frequent Indo-Tibetan Madhyamaka positions on truth, i.e., that the customary is no more than (...) surface level truth, mere consensus amongst the mistaken, or, similarly, that there can be no right answers or truth claims to endorse about customary matters, as there are no sources of knowledge that have them as objects. Tsong kha pa and the dGe lugs pa, by contrast, adopted what I consider to be a philosophically more promising stance, one that recognized the need for a robust normativity: things customary are not just reduced to accepted errors; there are right answers about them that should be endorsed and may well defy current consensus of opinion. Not surprisingly, however, they needed a quite different and even strained exegesis of that same Indian textual legacy. (shrink)

Two rival paradigms permeate bioethics. One generally favors eugenics, euthanasia, assisted suicide and other methods for those with severely restricting physical and cognitive attributes. The other typically opposes these and favors instead ample support for "persons of difference" and their caring families or loved ones. In an attempt to understand the relation between these two paradigms, this article analyzes a publicly reported debate between proponents of both paradigms, bioethicist Peter Singer and lawyer Harriet McBryde Johnson. At issue, the article concludes, (...) are two distinct axiomatic sets of values resulting in not simply different styles of rhetoric but different vocabularies, in effect two different languages of ethics. (shrink)

Nietzsche writes a great deal about freedom throughout his work, but never more explicitly than in Twiling of the Idols, a book he described as 'my philosophy in a nutshell'. This paper offers an analysis of Nietzsche's conception freedom and the role it plays within Twilight.

Automation does not always replace human labour altogether: there is an intermediate stage of human co-existence with machines, including robots, in a production process. Cobots are robots designed to participate at close quarters with humans in such a process. I shall discuss the possible role of cobots in facilitating the eventual total elimination of human operators from production in which co-bots are initially involved. This issue is complicated by another: cobots are often introduced to workplaces with the message (from managers) (...) that they will not replace human operators but will rather assist human operators and make their jobs more interesting and responsible. If, in the process of learning to assist human operators, robots acquire the skills of human operators, then the promise of avoiding replacement can turn out to be false, and if a human operator loses his job, he has been harmed twice over: once by unemployment and once by deception. I shall suggest that this moral risk attends some cobots more than others. (shrink)

The evidence for rationalisation, which motivates the target article, is exaggerated. Experimental evidence shows that rationalisation effects are small rather than gross and, I argue, largely silent on the pervasiveness and persistence of the phenomenon. At least some examples taken to show rationalisation also have an interpretation compatible with deliberate, knowing reason-responsiveness on the part of participants.

Using an observational sample of players of a simple online game, we are able to trace the development of skill in that game. Information on playing time, and player location, allows us to estimate time of day during which practice took place. We compare those whose breaks in practice probably contained a night's sleep and those whose breaks in practice probably did not contain a night's sleep. Our analysis confirms experimental evidence showing a benefit of spacing for skill learning, but (...) it fails to find any additional benefit of sleeping during a break from practice. We discuss reasons why the well-established phenomenon of sleep consolidation might not manifest in an observational study of skill development. We put the spacing effect into the context of the other known influences on skill learning: improvement with practice, and individual differences in initial performance. Analysis of performance data from games allows experimental results to be demonstrated outside of the lab and for experimental phenomenon to be put in the context of the performance of the whole task. (shrink)

It is argued that a second-order belief to the effect that I now have some particular propositional attitude is always true (Incorrigibility). This is not because we possess an infallible cognitive faculty of introspection, but because that x believes that he himself now has attitude A to proposition P entails that x has A to P. Incorrigibility applies only to second-order beliefs and not to mere linguistic avowals of attitudes. This view combines a necessary asymmetry between 1st and 3rd person (...) ascriptions with Objectivism about the propositional attitudes. The epistemic justification of second-order beliefs is shown to be a further question. (shrink)

This volume presents a framework of general principles for animal research ethics together with an analysis of the principles' meaning and moral requirements. Tom L. Beauchamp and David DeGrazia's comprehensive framework addresses ethical requirements pertaining to societal benefit and features a thorough, ethically defensible program of animal welfare. The book also features commentaries on the framework of principles by eminent figures in animal research ethics from an array of relevant disciplines: veterinary medicine, biomedical research, biology, zoology, comparative psychology, primatology, law, (...) and bioethics. (shrink)