We use the Newell Test as a basis for evaluating ACT-R as an effective architecture for cognitive engineering. Of the 12 functional criteria discussed by Anderson & Lebiere (A&L), we discuss the strengths and weaknesses of ACT-R on the six that we postulate are the most relevant to cognitive engineering.

Reinforcement learning (RL) models of decision-making cannot account for human decisions in the absence of prior reward or punishment. We propose a mechanism for choosing among available options based on goal-option association strengths, where association strengths between objects represent previously experienced object proximity. The proposed mechanism, Goal-Proximity Decision-making (GPD), is implemented within the ACT-R cognitive framework. GPD is found to be more efficient than RL in three maze-navigation simulations. GPD advantages over RL seem to grow as task difficulty is increased. (...) An experiment is presented where participants are asked to make choices in the absence of prior reward. GPD captures human performance in this experiment better than RL. (shrink)

An Essay on Human Action seeks to provide a comprehensive, detailed, enlightening, and (in its detail) original account of human action. This account presupposes a theory of events as abstract, proposition-like entities, a theory which is given in the first chapter of the book. The core-issues of action-theory are then treated: what acting in general is (a version of the traditional volitional theory is proposed and defended); how actions are to be individuated; how long actions last; what acting intentionally is; (...) what doing one thing by doing another is; what basic action is; and what omitting to do something is. Attention is also given to the concepts of causation, intention, volition, deciding, choosing, and trying. Finally, a libertarian account of free action is tentatively proposed and defended. (shrink)

Every choice we make is set against a background of massive ignorance about our past, our future, our circumstances, and ourselves. Philosophers are divided on the moral significance of such ignorance. Some say that it has a direct impact on how we ought to behave - the question of what our moral obligations are; others deny this, claiming that it only affects how we ought to be judged in light of the behaviour in which we choose to engage - the (...) question of what responsibility we bear for our choices. Michael Zimmerman claims that our ignorance has an important bearing on both questions, and offers an account of moral obligation and moral responsibility that is sharply at odds with the prevailing wisdom. His book will be of interest to a wide range of readers in ethics. (shrink)

The principal aim of this book is to develop and defend an analysis of the concept of moral obligation. The analysis is neutral regarding competing substantive theories of obligation, whether consequentialist or deontological in character. What it seeks to do is generate solutions to a range of philosophical problems concerning obligation and its application. Amongst these problems are deontic paradoxes, the supersession of obligation, conditional obligation, prima facie obligation, actualism and possibilism, dilemmas, supererogation, and cooperation. By virtue of its normative (...) neutrality, the analysis provides a theoretical framework within which competing theories of obligation can be developed and assessed. This study is a major contribution to metaethics that will be of particular interest to all philosophers concerned with normative ethical theory. (shrink)

This superbly crafted account of the notion of moral responsibility and of its relations to freedom, control, ignorance, negligence, attempts, omissions, compulsion, mental disorders, virtues and vices, desert, and punishment fills that gap. The treatment of character and luck is particularly sophisticated and well-argued.

At the heart of ethics reside the concepts of good and bad; they are at work when we assess whether a person is virtuous or vicious, an act right or wrong, a decision defensible or indefensible, a goal desirable or undesirable. But there are many varieties of goodness and badness. At their core lie intrinsic goodness and badness, the sort of value that something has for its own sake. It is in virtue of intrinsic value that other types of value (...) may be understood, and hence that we can begin to come to terms with questions of virtue and vice, right and wrong, and so on. This book investigates the nature of intrinsic value: just what it is for something to be valuable for its own sake, just what sort of thing can have such value, just how such a value is to be computed. In the final chapter, the fruits of this investigation are applied to a discussion of pleasure, pain, and displeasure and also of moral virtue and vice, in order to determine just what value lies within these phenomena. (shrink)

Michael J. Zimmerman explores whether and how our ignorance about ourselves and our circumstances affects what our moral obligations and moral rights are. He rejects objective and subjective views of the nature of moral obligation, and presents a new case for a 'prospective' view.

Intrinsic value has traditionally been thought to lie at the heart of ethics. Philosophers use a number of terms to refer to such value. The intrinsic value of something is said to be the value that that thing has “in itself,” or “for its own sake,” or “as such,” or “in its own right.” Extrinsic value is value that is not intrinsic.

What's wrong with designer children, bionic athletes, and genetic engineering.

Introduction: Doing the right thing -- Utilitarianism : Bentham and J.S. Mill -- Libertarianism -- John Locke -- Markets and morals -- Immanuel Kant -- John Rawls -- Affirmative action -- Aristotle -- Liberals and communitarians -- Conclusion: Reconnecting politics and morals.

The following argument is addressed: (1) a person is morally responsible for an event's occurring only if that event's occurring was not a matter of luck; (2) no event is such that its occurring is not a matter of luck; therefore, (3) no event is such that someone is morally responsible for its occurring. Two notions of control are distinguished: restricted and complete. (2) is shown false on the first interpretation, (1) on the second. The discussion involves a distinction between (...) resultant and situational luck, And it is argued that, Even when luck's role in life, And the unfairness that stems from it, Is acknowledged, Moral responsibility remains possible. (shrink)

In _The Immorality of Punishment_ Michael Zimmerman argues forcefully that not only our current practice but indeed any practice of legal punishment is deeply morally repugnant, no matter how vile the behaviour that is its target. Despite the fact that it may be difficult to imagine a state functioning at all, let alone well, without having recourse to punishing those who break its laws, Zimmerman makes a timely and compelling case for the view that we must seek and put (...) into practice alternative means of preventing crime and promoting social stability. (shrink)

Preface In these days, an anthology on the topic of possible worlds hardly needs justification. No issue has given rise to as much literature in the past ...

Many philosophers hold that whether an act is overall morally obligatory is an ‘objective’ matter, many that it is a ‘subjective’ matter, and some that it is both. The idea that it is or can be both may seem to promise a helpful answer to the question ‘What ought I to do when I do not know what I ought to do?’ In this article, three broad views are distinguished regarding what it is that obligation essentially concerns: the maximization of (...) actual value, the maximization of expected value, and the perceived maximization of actual value. The first and third views are rejected; the second view is then refined and defended. The unfortunate upshot is that there may be no very helpful answer to the question just mentioned. As to the question posed in the title of the article, the answer unsurprisingly depends on what ‘objective’ and ‘subjective’ are taken to mean. (Published Online November 24 2006). (shrink)

In this book, Michael Sandel takes up some of the hotly contested moral and political issues of our time, including affirmative action, assisted suicide, ...

We develop a framework for assessing security market quality, relating five elements of market design to three metrics of market integrity and two metrics of market efficiency. We empirically implement this integrity–efficiency MQ framework by testing a hypothesis that trade-based ramping manipulation at the close raises execution costs on 24 security markets worldwide. Estimating a simultaneous equations model of ramping incidence, spreads, and the probability of deploying real-time surveillance, we show that quoted bid-ask spreads are positively related to the incidence (...) of MTC across seven liquidity deciles. The magnitude is economically significant; improving market integrity by cutting MTC in half reduces spreads 6–11 %. Allowing direct market access in conjunction with RTS, conducting auctions at the close, and developing regulations that require surveillance, all reduce MTC and thereby lower spreads, assuring better market integrity and enhancing market efficiency. Introducing circuit breakers or prohibiting shorts poses integrity–efficiency tradeoffs. (shrink)

Many philosophers endorse the idea that there can be no moral responsibility without a moral community and thus hold that such responsibility is essentially interpersonal. In this paper, various interpretations of this idea are distinguished, and it is argued that no interpretation of it captures a significant truth. The popular view that moral responsibility consists in answerability is discussed and dismissed. The even more popular view that such responsibility consists in susceptibility to the reactive attitudes is also discussed, and it (...) is argued that this view at best supports only an etiolated interpretation of the idea that moral responsibility is essentially interpersonal. (shrink)

University of North Carolina at Greensboro Greensboro, NC 27402-6170, USA.

University of North Carolina at Greensboro Greensboro, NC 27402-6170, USA.

_Metaphysics: A Contemporary Introduction_ is for students who have already completed an introductory philosophy course and need a fresh look at the central topics in the core subject of metaphysics. It is essential reading for any student of the subject. This Fourth Edition is revised and updated and includes two new chapters on Parts and Wholes, and Metaphysical Indeterminacy or vagueness. This new edition also keeps the user-friendly format, the chapter overviews summarizing the main topics, concrete examples to clarify difficult (...) concepts, annotated further reading at the end of each chapter, endnotes, and a full bibliography. Topics addressed include: the problem of universals the nature of abstract entities the problem of individuation the nature of modality identity through time the nature of time the nature of parts and wholes the problem of metaphysical indeterminacy the Realism/anti-Realism debate. Wherever possible, Michael J. Loux and Thomas M. Crisp relate contemporary views to their classical sources in the history of philosophy. As experienced teachers of philosophy and important contributors to recent debates, Loux and Crisp are uniquely qualified to write this book. (shrink)

The fitting-attitudes analysis of value, which states that something's being good consists in its being the fitting object of some pro-attitude, has recently been the focus of intense debate. Many objections have been levelled against this analysis. One objection to it concerns the ‘challenge from partiality’, according to which it can be fitting to display partiality toward objects of equal value. Several responses to the challenge have been proposed. This paper criticizes these and other responses and then offers a response (...) that, it is claimed, solves the challenge. (shrink)

T. M. Scanlon has revived a venerable tradition according to which something's being good consists in its being such that there is a reason to respond positively towards it. He has presented novel arguments for this thesis. In this article, I first develop some refinements of the thesis with a view to focusing on intrinsic value in particular, then discuss the relation between the thesis and consequentialism, then critically examine Scanlon's arguments for the thesis, and finally turn to the question (...) whether we should reject the thesis on the grounds that, when there is a reason to respond positively towards something, this is so because the thing in question is good. Two appendices follow. In the first, I discuss whether it is good to do right. In the second, I discuss whether an act's being wrong provides a reason not to do it. (shrink)

The idea that immoral behaviour can sometimes be admirable, and that moral behaviour can sometimes be less than admirable, has led several of its supporters to infer that moral considerations are not always overriding, contrary to what has been traditionally maintained. In this paper I shall challenge this inference. My purpose in doing so is to expose and acknowledge something that has been inadequately appreciated, namely, the moral aspect of nonmoral goods and evils. I hope thereby to show that, even (...) if immorality can be admirable, this poses no threat to morality. (shrink)

Researchers misunderstand their role in creating ethical problems when they allow dogmas to purportedly divorce scientists and scientific practices from the values that they embody. Cortina, Edwards, and Powell help us clarify and further develop our position by responding to our critique of, and alternatives to, this misleading separation. In this rebuttal, we explore how the desire to achieve the separation of facts and values is unscientific on the very terms endorsed by its advocates—this separation is refuted by empirical observation. (...) We show that positivists like Cortina and Edwards offer no rigorous theoretical or empirical justifications to substantiate their claims, let alone critique ours. Following Powell, we point to how classical pragmatism understands ‘purpose’ in scientific pursuits while also providing an alternative to the dogmas of positivism and related philosophical positions. In place of dogmatic, unscientific cries about an abstract and therefore always-unobservable ‘reality,’ we invite all organizational scholars to join us in shifting the discussion about quantitative research towards empirically grounded scientific inquiry. This makes the ethics of actual people and their practices central to quantitative research, including the thoughts, discourses, and behaviors of researchers who are always in particular places doing particular things. We propose that quantitative researchers can thus start to think about their research practices as a kind of work, rather than having the status of a kind of dogma. We conclude with some implications that this has for future research and education, including the relevance of research and research methods. (shrink)

There is currently an explosion of interest in grounding. In this article we provide an overview of the debate so far. We begin by introducing the concept of grounding, before discussing several kinds of scepticism about the topic. We then identify a range of central questions in the theory of grounding and discuss competing answers to them that have emerged in the debate. We close by raising some questions that have been relatively neglected but which warrant further attention.

There has been considerable debate regarding the relative merits of two theses about moral obligation known as actualism and possibilism. Both theses seek to give expression to the general idea that one ought to do the best one can. According to actualism, one’s obligations turn on what would happen if one chose some course of action, whereas, according to possibilism, they turn on what could happen if one chose some course of action. There are two strands to the debate: the (...) substantive verdicts that the two theses render in particular cases, and the accounts that they yield of the conceptual structure of moral obligation. Possibilism is conceptually appealing, whereas actualism is not, but the latter may seem to render superior substantive verdicts. In this paper, it is argued that, by turning from the objectivist’s emphasis on what is actually best to the prospectivist’s emphasis on what one’s evidence indicates is best, possibilists can provide an account of moral obligation that is both conceptually and substantively attractive. (shrink)

Problems of and explanations for evil -- Neo-cartesianism -- Animal suffering and the fall -- Nobility, flourishing, and immortality : animal pain and animal well-being -- Natural evil, nomic regularity, and animal suffering -- Chaos, order, and evolution -- Combining CDs.

In this paper we discuss ethical implications of the use of mobile phone apps in the control of the COVID-19 pandemic. Contact tracing is a well-established feature of public health practice during infectious disease outbreaks and epidemics. However, the high proportion of pre-symptomatic transmission in COVID-19 means that standard contact tracing methods are too slow to stop the progression of infection through the population. To address this problem, many countries around the world have deployed or are developing mobile phone apps (...) capable of supporting instantaneous contact tracing. Informed by the on-going mapping of ‘proximity events’ these apps are intended both to inform public health policy and to provide alerts to individuals who have been in contact with a person with the infection. The proposed use of mobile phone data for ‘intelligent physical distancing’ in such contexts raises a number of important ethical questions. In our paper, we outline some ethical considerations that need to be addressed in any deployment of this kind of approach as part of a multidimensional public health response. We also, briefly, explore the implications for its use in future infectious disease outbreaks. (shrink)

This paper argues that Moore’s principle of organic unities is false. Advocates of the principle have failed to take note of the distinction between actual intrinsic value and virtual intrinsic value. Purported cases of organic unities, where the actual intrinsic value of a part of a whole is allegedly defeated by the actual intrinsic value of the whole itself, are more plausibly seen as cases where the part in question has no actual intrinsic value but instead a plurality of merely (...) virtual intrinsic values. (shrink)

If a man born blind were to gain his sight in later life would he be able to identify the objects he saw around him? Would he recognise a cube and a globe on the basis of his earlier tactile experiences alone? This was William Molyneux's famous question to John Locke and it was much discussed by English and French empiricists in the eighteenth century as part of the controversy over innatism and abstract ideas. Dr Morgan examines the whole history (...) of this debate: Locke's own (negative) answer to the question, the contributions of Berkeley, Condillac, Diderot and Voltaire and the factual accounts of early cataract operations and modern laboratory studies. He shows how this debate is involved in the development and eventual separation of philosophy and experimental psychology after the eighteenth century and considers why the original question is effectively still unanswered. This is one problem-area with its intricate cluster of connected conceptual and technical difficulties which suggests the need for some reunion or at least collaboration between the two subjects. (shrink)

Consider the following situation. It is the first day of school, and the new third-grade students file into the classroom to be shown to their seats for the coming year. As they enter, the third-grade teacher notices one small boy who is particularly unkempt. He looks to be in desperate need of bathing, and his clothes are dirty, torn and tight-fitting. During recess, the teacher pulls aside the boy's previous teacher and asks about his wretched condition. The other teacher informs (...) her that he always looks that way, even though the boy's family is quite wealthy. The reason he appears as he does, she continues, is that the family observes an odd practice according to which the children do not receive many important things – food, clothing, bathing, even shelter – unless they specifically request them. Since the boy, like many third-graders, has little interest in bathing and clean clothes, he just never asks for them. (shrink)

Argues that although the phenomenon of negative recency in secondary memory is usually attributed to the reduced amount of rehearsal associated with recency items, this phenomenon can be explained by the adoption of a different type of processing for recency items. An experiment with 122 undergraduates is reported in which the recall of recency items was reduced in an immediate test, but increased in a subsequent test, under conditions in which the recency items could not be identified as such during (...) their presentation. Results support the conclusion that the mode of processing items for an immediate free-recall test is normally modified for recency items. ((c) 1997 APA/PsycINFO, all rights reserved). (shrink)

Many writers accept the following thesis about responsibility: (R) For one to be responsible for something is for one to be such that it is fitting that one be the object of some reactive attitude with respect to that thing. This thesis bears a striking resemblance to a thesis about value that is also accepted by many writers: (V) For something to be good (or neutral, or bad) is for it to be such that it is fitting that it be (...) the object of some pro-attitude (or indifference, or some contra-attitude). V has been the subject of intense debate in recent years, in part because of its incorporation into what has come to be called the “buck-passing” account of value. In particular, V is open to three challenges: that it is not necessarily the case that whatever is good is the fitting object of a pro-attitude; that it is not necessarily the case that whatever is the fitting object of a pro-attitude is good; and that, even if there is a strict equivalence between what is good and what is the fitting object of a pro-attitude, still the former is not to be analyzed in terms of the latter. The resemblance between V and R has not been previously commented on, but, once it is recognized, it is clear that R is open to challenges that resemble those to which V is vulnerable. This paper explores both the challenges to V and the parallel challenges to R and discusses responses that may be given to these challenges. The interrelation between V and R is then examined, and a general lesson is drawn concerning how to adjudicate disputes about the nature of moral responsibility. (shrink)