Searching for information is critical in many situations. In medicine, for instance, careful choice of a diagnostic test can help narrow down the range of plausible diseases that the patient might have. In a probabilistic framework, test selection is often modeled by assuming that people's goal is to reduce uncertainty about possible states of the world. In cognitive science, psychology, and medical decision making, Shannon entropy is the most prominent and most widely used model to formalize probabilistic uncertainty and the (...) reduction thereof. However, a variety of alternative entropy metrics (Hartley, Quadratic, Tsallis, Rényi, and more) are popular in the social and the natural sciences, computer science, and philosophy of science. Particular entropy measures have been predominant in particular research areas, and it is often an open issue whether these divergences emerge from different theoretical and practical goals or are merely due to historical accident. Cutting across disciplinary boundaries, we show that several entropy and entropy reduction measures arise as special cases in a unified formalism, the Sharma–Mittal framework. Using mathematical results, computer simulations, and analyses of published behavioral data, we discuss four key questions: How do various entropy models relate to each other? What insights can be obtained by considering diverse entropy models within a unified framework? What is the psychological plausibility of different entropy models? What new questions and insights for research on human information acquisition follow? Our work provides several new pathways for theoretical and empirical research, reconciling apparently conflicting approaches and empirical findings within a comprehensive and unified information-theoretic formalism. (shrink)

Is human cognition best described by optimal models, or by adaptive but suboptimal heuristic strategies? It is frequently hard to identify which theoretical model is normatively best justified. In the context of information search, naoptimal” models.

The probabilistic analysis of functional questions is maturing into a rigorous and coherent research paradigm that may unify the cognitive sciences, from the study of single neurons in the brain to the study of high level cognitive processes and distributed cognition. Endless debates about undecidable structural issues (modularity vs. interactivity, serial vs. parallel processing, iconic vs. propositional representations, symbolic vs. connectionist models) may be put aside in favor of a rigorous understanding of the problems solved by organisms in their natural (...) environments. [Shepard; Tenenbaum & Griffiths]. (shrink)

Humans excel in categorization. Yet from a computational standpoint, learning a novel probabilistic classification task involves severe computational challenges. The present paper investigates one way to address these challenges: assuming class-conditional independence of features. This feature independence assumption simplifies the inference problem, allows for informed inferences about novel feature combinations, and performs robustly across different statistical environments. We designed a new Bayesian classification learning model that incorporates varying degrees of prior belief in class-conditional independence, learns whether or not independence holds, (...) and adapts its behavior accordingly. Theoretical results from two simulation studies demonstrate that classification behavior can appear to start simple, yet adapt effectively to unexpected task structures. Two experiments—designed using optimal experimental design principles—were conducted with human learners. Classification decisions of the majority of participants were best accounted for by a version of the model with very high initial prior belief in class-conditional independence, before adapting to the true environmental structure. Class-conditional independence may be a strong and useful default assumption in category learning tasks. (shrink)

Jonathan D. Moreno and Sam Berger, Progress in bioethics: Science, policy, and politics, Cambridge, Mass.: MIT Press, 2010, reviewed by James Lindemann Nelson.

D. M. Armstrong famously claims that deterministic laws of nature are contingent relations between universals and that his account can also be straightforwardly extended to irreducibly probabilistic laws of nature. For the most part, philosophers have neglected to scrutinize Armstrong’s account of probabilistic laws. This is surprising precisely because his own claims about probabilistic laws make it unclear just what he takes them to be. We offer three interpretations of what Armstrong-style probabilistic laws are, and argue that all three interpretations (...) are incompatible either with some feature of Armstrong’s broader metaphysics or with essential features of his account of laws (or both). (shrink)

In her foreword to Science Next, Elizabeth Edwards wrote of science as a tool for social progress: "Innovation is not simply the abstract victory of knowledge [or] the research that gave me years to live; the next science can advance human flourishing and serve the common good. That's the kind of world I want to leave for my children, and for yours." With these words, she joined a tradition that goes back to America's founders, who saw America itself as a (...) "great experiment." Yet while no one can deny that science undergirds the American Dream, it has long been fertile terrain for the "culture wars." Along with arguing the pros and cons of abortion and healthcare, policymakers must now grapple with advancements that raise questions about what it means to be human: we've decoded the genome, but should we modify it to enhance certain "desirable" traits? If we can, should we prolong life at any cost? Will we soon be counting robots, cyborgs, and chimeras among our friends and family?The first book to unpack our love/hate relationship with science from our country's origins to today, The Body Politic is essential reading for science buffs and concerned citizens alike.Jonathan D. Moreno is editor of the Center for American Progress' online magazine Science Progress and professor of bioethics at the University of Pennsylvania. Author and editor of many seminal books and articles on science and science policy, he divides his time between Philadelphia, PA, and Washington, DC. (shrink)

Kramer was one of the most visionary musical thinkers of the second half of the 20th century. In his The Time of Music, he approached the idea of the many different ways that time itself is articulated musically. This book has become influential among composers, theorists, and aestheticians. Now, in his almost completed text written before his untimely death in 2004, he examines the concept of postmodernism in music. Kramer created a series of markers by which we can identify postmodern (...) works. He suggests that the postmodern project actually creates a radically different relationship between the composer and listener. Written with wit, precision, and at times playfully subverting traditional tropes to make a very serious point about this difference, Postmodern Music, Postmodern Listening leads us to a strongly grounded intellectual basis for stylistic description and an intuitive sensibility of what postmodernism in music entails. Postmodern Music, Postmodern Listening is an examination of how musical postmodernism is not just a style or movement, but a fundamental shift in the relationship between composer and listener. The result is a multifaceted and provocative look at a critical turning point in music history, one whose implications we are only just beginning to understand. (shrink)

South Africa has an education crisis, despite the fact that the government spends the biggest slice of its budget on education, more than any other African country. And yet the crisis persists. Jansen and Blank looked at South African schools that work, in spite of adverse conditions -- schools in poor communities, schools with overcrowded classrooms, schools in both rural and urban environments -- and have drawn out the practical strategies that make them successful. 19 short films (included on DVD) (...) let you visit these schools and understand in the words of their principals, teachers and learners what makes them succeed. Then take look at the 10 key strategies identified and see how to implement them in other schools to effect transformation. As we have come to expect from Jansen, there are no complicated theories, not difficult to implement solutions -- just lots of common sense! (shrink)

I explore two accounts of properties within a dispositional essentialist (or causal powers) framework, the pure powers view and the powerful qualities view. I first attempt to clarify precisely what the pure powers view is, and then raise objections to it. I then present the powerful qualities view and, in order to avoid a common misconception, offer a restatement of it that I shall call the truthmaker view. I end by briefly defending the truthmaker view against objections.

Possible worlds, concrete or abstract as you like, are irrelevant to the truthmakers for modality—or so I shall argue in this paper. First, I present the neo-Humean picture of modality, and explain why those who accept it deny a common sense view of modality. Second, I present what I take to be the most pressing objection to the neo-Humean account, one that, I argue, applies equally well to any theory that grounds modality in possible worlds. Third, I present an alternative, (...) properties-based theory of modality and explore several specific ways to flesh the general proposal out, including my favored version, the powers theory. And, fourth, I offer a powers semantics for counterfactuals that each version of the properties-based theory of modality can accept, mutatis mutandis. Together with a definition of possibility and necessity in terms of counterfactuals, the powers semantics of counterfactuals generates a semantics for modality that appeals to causal powers and not possible worlds. (shrink)

Western society today is less unified by a set of core values than ever before. Undoubtedly, the concept of moral consensus is a difficult one in a liberal, democratic and pluralistic society. But it is imperative to avoid a rigid majoritarianism where sensitive personal values are at stake, as in bioethics. Bioethics has become an influential part of public and professional discussions of health care. It has helped frame issues of moral values and medicine as part of a more general (...) effort to find consensus about some of the most perplexing questions of our time. But why is it thought that a moral consensus is important or that it deserves respect? How does moral consensus acquire legitimacy in a society that includes diverse value systems? How is moral consensus possible and how do small groups help create or distort consensus processes? Written by a medical school professor trained in philosophy, this timely work tackles these questions from philosophical, historical, and social scientific standpoints. It begins by describing the traditional ambivalence about consensus in Western culture as well as the uncertain relationship in modernity between consensus and expertise. After outlining the current bioethical consensus, the book gives philosophical and political analyses of the idea of consensus, then assesses the role of consensus in national ethics commissions and in the ethics committee movement. Moreno constructs an original, naturalistic philosophy of moral consensus, referred to as "bioethical naturalism", and then applies sociology and social psychology to actual consensus processes. The book concludes with an account of bioethics as a consensus-oriented social reform movement. This insightful volume will be essential reading for bioethicists, philosophers, physicians, members of ethics committees, and all those concerned with ethical and social issues in health care. (shrink)

In this paper, we continue with the study of tense operators on Nelson algebras (Figallo et al. in Studia Logica 109(2):285–312, 2021, Studia Logica 110(1):241–263, 2022). We define the variety of algebras, which we call tense Nelson D-algebras, as a natural extension of tense De Morgan algebras (Figallo and Pelaitay in Logic J IGPL 22(2):255–267, 2014). In particular, we give a discrete duality for these algebras. To do this, we will extend the representation theorems for Nelson algebras (...) given in Sendlewski (Studia Logica 43(3):257–280, 1984) to the tense case. (shrink)

Three claims are widely held and individually plausible, but jointly inconsistent: (1) Negative actions (intentional omissions, refrainments, etc.) are genuine actions; (2) All actions are events; (3) Some, and perhaps all, negative actions aren't events, but absences thereof (when I omit to raise my arm, no omission-event occurs; what happens is just that no arm-raising occurs). Drawing on resources from metaphysics and the philosophy of language, I argue that (3) is false. Negative actions are events, just as ordinary actions are. (...) Moreover, each token negative action is identical to a token positive event, so we can adopt this realist view of negative actions without adding metaphysically negative entities (absences, negative states of affairs) to our ontology. (shrink)

I claim that a whole is identical to its parts. Many find this claim incredible: it seems that a whole and its parts must be distinct, for the whole is one thing while its parts are many things. Byeong-uk Yi has developed a version of this argument which exploits the resources of plural logic. Yi provides logical analyses of the predicates ‘one’ and ‘many’ which seem to show that nothing can satisfy them both. But there are two senses of the (...) word ‘one’. One of these senses is not captured by Yi’s analysis, and in this sense of the word, it is logically possible for many things to be one. Moreover, we should only believe that a whole is one thing in this sense, not that it is one thing in the sense Yi has analysed. Thus, we can identify wholes with their parts without contradiction. (shrink)

It is often assumed that, while ordinary actions are events, ‘negative actions’ are absences of events. I claim that a negative action is an ordinary, ‘positive’ event that plays a certain role. I argue that my approach can answer standard objections to the identity of negative actions and positive events.

We use concepts of causal powers and their relatives-dispositions, capacities, and abilities-to describe the world around us, both in everyday life and in scientific practice. This volume presents new work on the nature of causal powers, and their connections with other phenomena within metaphysics, philosophy of science, and philosophy of mind.

This article is based on a public lecture hosted by the Monash University Centre for Human Bioethics in Melbourne, Australia on 11 April 2013. The lecture recording was transcribed by Vicky Ryan; and, the original transcript has been edited — for clarity and brevity — by Vicky Ryan, Michael Selgelid and Jonathan Moreno.

I defend the thesis that Composition Entails Identity (CEI): that is, a whole is identical to all of its parts, taken together. CEI seems to be inconsistent, since it seems to require that the parts of a whole possess incompatible number properties (for instance, being one thing and being many things). I show that these number properties are, in fact, compatible.

Freedom and moral responsibility have one foot in the practical realm of human affairs and the other in the esoteric realm of fundamental metaphysics—or so we believe. This has been denied, especially in the metaphysics-bashing era occupying the first two-thirds or so of the twentieth century, traces of which linger in the present day. But the reasons for this denial seem to us quite implausible. Certainly, the argument for the general bankruptcy of metaphysics has been soundly discredited. Arguments from Strawson (...) and others that our moral practices are too deeply embedded in human life to rest on anything as tenuous as a metaphysical doctrine far from the thoughts of ordinary people would seem to prove too much: we can easily imagine fantastic scenarios far from the thoughts of ordinary people—involving, say, alien manipulation or massive deception—that, if true, would clearly undermine claims to freedom and responsibility. For still other philosophers, the separation of the moral life from (some) metaphysical issues is prescriptive, not descriptive: it is a recommendation that we revise ordinary moral thought by severing its allegedly problematic links to metaphysics. (Some philosophers appear to hover undecided between such a prescriptive project and a Strawsonian descriptive claim.) We suspect that the prospects of retaining the binding force of ordinary moral thought, were such a reconceived moral practice widely embraced, are bleak. A transition to something closer to moral nihilism seems at least as likely. In any case, our interest here is in descriptive metaphysics, not revisionary. -/- To say as we do that freedom and moral responsibility have a partly metaphysical character is not to suggest that they can be had only if some highly specific version of a particular metaphysical framework is correct. Instead, we suggest in what follows, it is a broadly neo-Humean metaphysics that is not hospitable to freedom (for reasons distinctive to the metaphysics), while a broadly neo-Aristotelian metaphysics is. But we also think (and it is the main aim of our paper to show) that different versions of the neo- Aristotelian metaphysics lead to rather different metaphysical accounts of free and responsible action. Specifically, we will argue that (1) the most satisfactory account of human freedom within the broadly neo-Aristotelian metaphysics is agent-causal, but that (2) two different versions of the general metaphysics will lead to important differences in the agent-causal account of freedom. Adjust the details of your general metaphysics, and the details of your account of freedom are transformed in significant ways. Action theory cannot properly be pursued in isolation from general metaphysics. (shrink)

The generality problem is perhaps the most notorious problem for process reliabilism. Several recent responses to the generality problem have claimed that the problem has been unfairly leveled against reliabilists. In particular, these responses have claimed that the generality problem is either (i) just as much of a problem for evidentialists, or (ii) if it is not, then a parallel solution is available to reliabilists. Along these lines, Juan Comesaña has recently proposed solution to the generality problem—well-founded reliabilism. According to (...) Comesaña, the solution to the generality problem lies in solving the basing problem, such that any solution to the basing problem will give a solution to the generality problem. Comesaña utilizes Conee and Feldman’s evidentialist account of basing (Conee and Feldman’s well-foundedness principle) in forming his version of reliabilism. In this paper I show that Comesaña’s proposed solution to the generality problem is inadequate. Well-founded reliabilism both fails to solve the generality problem and subjects reliabilism to new damning verdicts. In addition, I show that evidentialism does not face any parallel problems, so the generality problem remains a reason to prefer evidentialism to reliabilism. (shrink)

Consensus is commonly identified as the goal of ethics committee deliberation, but it is not clear what is morally authoritative about consensus. Various problems with the concept of an ethics committee in a health care institution are identified. The problem of consensus is placed in the context of the debate about realism in moral epistemology, and this is shown to be of interest for ethics committees. But further difficulties, such as the fact that consensus at one level of discourse need (...) not imply consensus at another, oblige us to look more closely at the deliberative process itself. That yields two complementary methods of deliberation that have proven their worth. Finally, placing ethics committees in the context of Dewey's philosophy of social intelligence suggests that consensus should be regarded primarily as a condition rather than as the goal of inquiry. Keywords: ethics committee, consensus, moral authority CiteULike Connotea Del.icio.us What's this? (shrink)

Metaphysicians of various stripes claim that a single object can have more than one exact location in space or time – e.g. endurantists claim that an object persists by being ‘all there’ at different moments in time. Antony Eagle has developed a formal theory of location which is prima facie consistent with multi-location, but Damiano Costa and Claudio Calosi argue that the theory is unattractive to multi-location theorists on other grounds. I examine their charge that Eagle’s theory won’t allow an (...) endurantist to account for certain cases of mereological change. I argue that the charge sticks, but not for the reasons Costa and Calosi think. Along the way, I explore an issue which is underexplored in their paper, namely, how an endurantist might modify Eagle’s theory to incorporate a parthood relation which obtains, not absolutely, but only relative to times. (shrink)

It is typically assumed that actions are events, but there is a growing consensus that negative actions, like omissions and refrainments, are not events, but absences thereof. If so, then we must either deny the obvious, that we can exercise our agency by omitting and refrainment, or give up on event-based theories of agency. I trace the consensus to the assumption that negative action sentences are negative-existentials, and argue that this is false. The best analysis of negative action sentences treats (...) them as quantifying over omissions and refrainments, conceived of as events. (shrink)

Timely and provocative essays on bioethical questions brought to the forefront by the bioterrorist threat.

Although the neoconservative movement has come to dominate American conservatism, this movement has its origins in the old Marxist Left. Communists in their younger days, as the founders of neoconservatism, inverted Marxist doctrine by arguing that moral values and not economic forces were the primary movers of history. Yet the neoconservative critique of biotechnology still borrows heavily from Karl Marx and owes more to the German philosopher Martin Heidegger than to the Scottish philosopher and political economist Adam Smith. Loath to (...) identify these sources - or perhaps unaware of them - neoconservatives do not acknowledge these intellectual underpinnings or their implications. Thus, in the final analysis, their critique is incoherent and even internally inconsistent. By not acknowledging and embracing their intellectual roots, neoconservatives are left with a deeply ambivalent and often confused view of biotechnology and the society that gives rise to it. (shrink)

Federal policies on human subjects research have performed a near‐about face. In the 1970s, policies were motivated chiefly by a belief that subjects needed protection from the harms and risks of research. Now the driving concern is that patients, and the populations they represent, need access to the benefits of research.

Medical and public health research includes surveys, interviews, and biospecimens — techniques that do not present substantial risks to subjects. Consequently, this research is exempt from regulation under the Federal Common Rule. Nevertheless, at many institutions, exempt research is frequently subject to the same regulatory process that is required for non-exempt research, requiring the consumption of time and resources for review by Institutional Review Board members or staff. The federal government has indicated an intention to reform and centralize this system, (...) but has not yet specified the form that it will use instead. By examining the policies of the top 50 research institutions, this article assesses institutional practices surrounding exempt research, quantifies the extent of exempt-research review requirements, documents a problem of “over-compliance,” and makes recommendations for reform. (shrink)

Recently Trent Dougherty has claimed that there is a tension between skeptical theism and common sense epistemology—that the more plausible one of these views is, the less plausible the other is. In this paper I explain Dougherty’s argument and develop an account of defeaters which removes the alleged tension between skeptical theism and common sense epistemology.

We present an original emergent individuals view of human persons, on which persons are substantial biological unities that exemplify metaphysically emergent mental states. We argue that this view allows for a coherent model of identity-preserving resurrection from the dead consistent with orthodox Christian doctrine, one that improves upon alternatives accounts recently proposed by a number of authors. Our model is a variant of the “falling elevator” model advanced by Dean Zimmerman that, unlike Zimmerman’s, does not require a closest continuer account (...) of personal identity. We end by raising some remaining theological concerns. (shrink)