Is the “act itself” of separating a pregnant woman and her previable child neither good nor bad morally, considered in the abstract? Recently, Maureen Condic and Donna Harrison have argued that such separation is justified to protect the mother’s life and that it does not constitute an abortion as the aim is not to kill the child. In our article on maternal–fetal conflicts, we agree there need be no such aim to kill (supplementing aims such as to remove). However, we (...) argue that to understand “abortion” as performed only where the death of the child is intended is to define the term too narrowly. Respect for the mother, the fetus, and the bond between them goes well beyond avoiding any such aim. We distinguish between legitimate maternal treatments simply aimed at treating or removing a damaged part of the woman and illegitimate treatments that focus harmfully on the fetal body and its presence within the mother’s body. In obstetrics as elsewhere, not all side effects for one subject of intervention can be outweighed by intended benefits for another. Certain side effects of certain intended interventions are morally conclusive. (shrink)

Is it possible to donate unpaired vital organs, foreseeing but not intending one's own death? We argue that this is indeed psychologically possible, and thus far agree with Charles Camosy and Joseph Vukov in their recent paper on 'double effect donation.' Where we disagree with these authors is that we see double effect donation not as a morally praiseworthy act akin to martyrdom but as a morally impermissible act that necessarily disrespects human bodily integrity. Respect for bodily integrity goes beyond (...) avoiding the aim to kill: not all side effects of deliberate bodily interventions can be outweighed by intended benefits for another even if the subject fully consents. It is not any necessary intention to kill or harm another or oneself that makes lethal donation/harvesting illicit but the more immediate intention to accept or perform surgery on an (innocent) person combined with the foresight of lethal harm and no health-related good for him or her. Double effect donation falls foul of the first condition of double effect reasoning in that the immediate act is wrong in itself. We argue further that the wider effects of such donation would be socially disastrous and corrupting of the medical profession: doctors should retain a sense of nonnegotiable respect for bodily integrity even when they intervene on willing subjects for the benefit of others. (shrink)

In the 1960s, before the promulgation of Humanae Vitae, the Catholic philosophers Elizabeth Anscombe and Herbert McCabe OP debated whether there are convincing natural law arguments for the claim that contraception violates an exceptionless moral norm. This article revisits those arguments and critiques McCabe’s approach to natural law, concerned primarily with ‘social sin’ and not simply violations of ‘right reason,’ as one particularly ill-suited to addressing questions in sexual ethics and unable both to distinguish properly between certain forms of sexual (...) wrongdoing and more obviously social sins such as theft, and also to distinguish between ‘natural’ and ‘unnatural’ sexual acts. Anscombe’s views, I argue, are closer to those of Thomas Aquinas and provide reasons for making the distinctions McCabe does not. An argument concerning the nature of the institution of marriage and the effects of non-marital acts on that institution is proposed as a way of strengthening Anscombe’s argument that contraception violates an exceptionless moral norm. (shrink)

Is it possible to donate unpaired vital organs, foreseeing but not intending one’s own death? We argue that this is indeed psychologically possible, and thus far agree with Charles Camosy and Joseph Vukov in their recent paper on “double effect donation.” Where we disagree with these authors is that we see double-effect donation not as a morally praiseworthy act akin to mar- tyrdom but as a morally impermissible act that necessarily disrespects human bodily integrity. Respect for bodily integrity goes beyond (...) avoiding the aim to kill; not all side effects of deliberate bodily interventions can be outweighed by intended benefits for another even if the subject fully consents. It is not any necessary intention to kill or harm another or oneself that makes lethal donation/harvesting illicit but the more immediate intention to accept or perform surgery on an (innocent) person combined with the foresight of lethal harm and no health-related good for him or her. Double-effect donation falls foul of the first condition of double-effect reasoning in that the immediate act is wrong in itself. We argue further that the wider effects of such don- ation would be socially disastrous and corrupting of the medical profession: doctors should retain a sense of nonnegotiable respect for bodily integrity even when they intervene on willing subjects for the benefit of others. (shrink)

Is moral or other regret for abortion an indicator that abortion may not be morally or prudentially choice worthy? This paper examines the work of Kate Greasley in this area, who offers an explanation of any asymmetry in openness to regret between women who have abortions and women who give birth. The latter, not unlike Derek Parfit’s 14-year-old who conceives deliberately, may feel duty-bound not to regret their decision (in their case, to continue their pregnancy) and to affirm the life (...) of their child. In response to Greasley, testimonial evidence of one group cannot be dismissed simply because regret may be less available to another group of decision-makers. Moreover, if moral regret for childbearing is uncommon, this is not because mothers have a moral duty, as Greasley argues, not to regret even a morally mistaken choice to conceive. On the contrary, one must separate the evaluation of choices and of the results of these choices, whether positive or negative. Regret, while not infallible, can elucidate values at stake in choices, and testimonial evidence in the form of regret should be taken more seriously in regard to certain kinds of choice. (shrink)

Ethical Sex: Sexual Choices and Their Nature and Meaning is a book-length exploration of the philosophy of sex. It engages with various approaches to the subject, covering natural law approaches and phenomenology as well as virtue ethics.

Catholic sexual ethics proposes a number of exceptionless moral norms. This distinguishes it from theories which deny the possibility of any exceptionless moral norms (e.g. the proportionalist approach proposed in the aftermath of "Humanae Vitae" and condemned in "Veritatis Splendor"). I argue that Catholic teaching on sexual ethics refers to chosen physical structures in such a way as to make ‘new natural law’ theory inherently unstable. I outline a theory of “the moral act” (Veritatis Splendor 78) which emphasises the place (...) which chosen physical features – in particular, chosen sexual structures – play in specifying human actions. I conclude that this account, involving what I term UMDAs, is needed to make sense of the Church’s teaching in these areas. (shrink)

Conditional willing of morally impermissible actions like adultery tells us something about the moral agent, as does the liability to will such actions in certain unrealised contingencies. However, I argue, a liability to will wrongful actions in some circumstances need not (though it might) affect the moral permissibility of the act intended here and now e.g. terms of going through a marriage ceremony or enjoying sexual acts with one's spouse. This chapter explores the issue of conditional, preparatory or contingent intentions (...) of spouses with critical reference to work of John Finnis in this area. (shrink)

An in-depth critique of arguments of John Finnis, Germain Grisez, Joseph Boyle and William May to the effect that contraception is necessarily contralife in the sense of exhibiting a will against a possible person.

Is moral or other regret for abortion an indicator that abortion may not be morally or prudentially choice worthy? This paper examines the work of Kate Greasley in this area, who offers an explanation of any asymmetry in openness to regret between women who have abortions and women who give birth. The latter, not unlike Derek Parfit’s 14-year-old who conceives deliberately, may feel duty-bound not to regret their decision (in their case, to continue their pregnancy) and to affirm the life (...) of their child. In response to Greasley, testimonial evidence of one group cannot be dismissed simply because regret may be less available to another group of decision-makers. Moreover, if moral regret for childbearing is uncommon, this is not because mothers have a moral duty, as Greasley argues, not to regret even a morally mistaken choice to conceive. On the contrary, one must separate the evaluation of choices and of the results of these choices, whether positive or negative. Regret, while not infallible, can elucidate values at stake in choices, and testimonial evidence in the form of regret should be taken more seriously in regard to certain kinds of choice. (shrink)

Short Arguments: Some General Rules Arguments begin by marshaling reasons and organizing them in a clear and fair way. Chapter I offers general rules for ...

Taking a refreshingly hands-on approach to introductory ethics, A 21st Century Ethical Toolbox provides students with a set of tools to help them understand and make a constructive difference in real-life moral controversies. Thoroughly optimistic, it invites students to approach ethical issues with a reconstructive intent, making room for more and better options than the traditional "pro" and "con" positions that have grown up around tough problems like abortion and animal rights. Ideal for introductory and applied ethics courses, this unique (...) text does not treat ethics as a purely academic, historical, or theoretical subject, but as a wide-ranging and ongoing set of challenges that calls for multiple and interwoven kinds of intelligence. It covers the skills that are most vital to making real progress in ethics, including paying careful attention to the values at stake on all sides of an issue; looking for creative opportunities within difficult problems; critical-thinking skills such as defining key terms and making sure to judge similar cases alike; and learning how to engage in constructive dialogue. Instructors can readily use the experiential and applied activities inspired by this "toolbox" of practical skills to design an interactive and collaborative ethics course. Students can carry these essential skills directly from this book into such projects as campaigning for environmental awareness and staffing local homeless shelters. In addition to his own discussion, Weston includes gripping and provocative short selections from essayists, activists, and philosophers, and also cites his own students. Extensive "Exercises and Notes" sections end each chapter, and a detailed appendix offers instructors advice on how to use the Toolbox in the classroom. (shrink)

Recently, bioethicists and the UNCRPD have advocated for supported medical decision-making on behalf of patients with intellectual disabilities. But what does supported decision-making really entail? One compelling framework is Anita Silvers and Leslie Francis’ mental prosthesis account, which envisions supported decision-making as a process in which trustees act as mere appendages for the patient’s will; the trustee provides the cognitive tools the patient requires to realize her conception of her own good. We argue that supported decision-making would be better understood (...) as a collaborative process, giving patients with intellectual disabilities the opportunity to make decisions in a respectful relationship with trusted others. We offer an alternative account of supported decision-making where the primary constraint is to protect the patient from domination by the trustee. This is advantageous in its preservation of the prospects for genuine collaboration, for the mental prosthesis approach ultimately reinforces a problematic ideal of isolated patient self-determination. (shrink)

A Practical Companion to Ethics, Fourth Edition, is a concise and accessible introduction to the basic attitudes and skills that make ethics work, like thinking for oneself, creative and integrative problem-solving, and keeping an open mind. This unique volume illuminates the broad kinds of practical intelligence required in moral judgment, complementing the narrower theoretical considerations that often dominate ethics courses. The optimistic tone and brisk pace of the narrative provide an entertaining and intelligent guide to "everyday" morality. The fourth edition (...) features a new chapter on ethical theories; significantly revised and expanded chapters on conflicts of value and creative problem- solving in ethics; and a new concluding chapter on "Making a Difference, " which explains how students can incorporate ethical thinking and practice into their daily lives. (shrink)

In this new textbook two Catholic ethicists with extensive teaching experience present a moral theology based on vision. David Matzko McCarthy and James M. Donohue draw widely from the Western philosophical tradition while integrating biblical and theological themes in order to explore such fundamental questions as What is good? The fourteen chapters in Moral Vision are short and thematic. Substantive study questions engage with primary texts and encourage students to apply theory to everyday life and common human experiences. The (...) book is accessibly written and flexible enough to fit into any undergraduate or seminary course on ethics. (shrink)

This popular selection of Wittgenstein’s key writings has now been updated to include new material relevant to recent debates about the philosopher. Follows the evolution of Wittgenstein’s philosophical thought from the Tractatus Logico-Philosophicus through to the Philosophical Investigations. Excerpts are arranged by topic and introduce readers to all the central concerns of Wittgenstein’s philosophy. Now includes a new chapter on ‘Sense, Nonsense and Philosophy’ incorporating material relevant to recent debates about Wittgenstein.

Few issues cause academics to disagree more than gender and race, especially when topics are addressed in terms of biological differences. To conduct research in these areas or comment favorably on research can subject one to scorn. When these topics are addressed, they generally take the form of philosophical debates. Anthony Walsh focuses upon such debates and supporting research. He divides parties into biologists and social constructionists, arguing that biologists remain focused on laboratory work, while constructionists are acutely aware (...) of the impact of biologists in contested territories. "Science Wars" introduces the ideas motivating the parties and examines social constructionism and its issues with science. He explores arguments over conceptual tools scientists love and constructionists abhor, and he provides a solid discussion of the co-evolution of genes and culture. Walsh then focuses his attention on gender, how constructionists view it, and the neuroscience explanation of gender differences. Moving to race, Walsh looks at how some have tried to bury the concept of race, while others emphasize it. He considers definitions of race--essentialist, taxonomic, population, and lineage--as they have evolved from the time of the Enlightenment to the present. And finally, he attempts to bring the opposing sides together by pointing out what each can bring to a meaningful discussion. (shrink)

While philosophers of mind have been arguing over the status of mental representations in cognitive science, cognitive scientists have been quietly engaged in studying perception, action, and cognition without explaining them in terms of mental representation. In this book, Anthony Chemero describes this nonrepresentational approach, puts it in historical and conceptual context, and applies it to traditional problems in the philosophy of mind. Radical embodied cognitive science is a direct descendant of the American naturalist psychology of William James and (...) John Dewey, and follows them in viewing perception and cognition to be understandable only in terms of action in the environment. Chemero argues that cognition should be described in terms of agent-environment dynamics rather than in terms of computation and representation. After outlining this orientation to cognition, Chemero proposes a methodology: dynamical systems theory, which would explain things dynamically and without reference to representation. He also advances a background theory: Gibsonian ecological psychology, "shored up" and clarified. Chemero then looks at some traditional philosophical problems through the lens of radical embodied cognitive science and concludes that the comparative ease with which it resolves these problems, combined with its empirical promise, makes this approach to cognitive science a rewarding one. "Jerry Fodor is my favorite philosopher," Chemero writes in his preface, adding, "I think that Jerry Fodor is wrong about nearly everything." With this book, Chemero explains nonrepresentational, dynamical, ecological cognitive science as clearly and as rigorously as Jerry Fodor explained computational cognitive science in his classic work The Language of Thought. (shrink)

This paper makes the case for a pluralist, contextualist view of nursing ethics. In defending this view, I briefly outline two current perspectives of nursing ethics – the Traditional View and the Theory View. I argue that the Traditional View, which casts nursing ethics as a subcategory of healthcare ethics, is problematic because it (1) fails to sufficiently acknowledge the unique nature of nursing practice; and (2) applies standard ethical frameworks such as principlism to moral problems which tend to alienate (...) or undermine nursing ethical concerns. Alternatively, the Theory View, which aims to build an independent and comprehensive theory of nursing ethics, is also found wanting because it (1) fails to sufficiently acknowledge the heterogeneous nature of nursing practices; (2) overemphasizes the differences and undervalues the similarities between nurses and other health professionals; and (3) assumes that one ethical framework can be meaningfully applied across diverse moral problems and contexts.My alternative, is to argue that nursing ethics inquiry should take a pluralist and critical stance towards available ethical frameworks and the negotiation of the ethical realm. On this view, the search for moral consensus or a unique ethical framework for nursing is replaced by the task of working strategically with multiple frameworks in order to expand the moral agency of nurses and empower them to positively engage with moral uncertainty as an inevitable feature of living a moral life. I conclude by indicating some of the implications that this has for the teaching of nursing ethics. (shrink)

In this important volume Habermas outlines the views which form the basis of his critical theory of modern societies. The volume comprises five interlocking essays, which together define the contours of his theory of communication and of his substantive account of social change. ′What is Universal Pragmatics?′ is the best available statement of Habermas′s programme for a theoryof communication based on the analysis of speech acts. In the following two essays Habermas draws on the work of Kohlberg and others to (...) develop a distinctive account of moral consciousness and normative structures. ′Toward a Reconstruction of historical Materialsim′ takes these issues further, offering a wide–ranging reconstruction of Marx′s historical materialsim understood as a theory of social evolution. The final essay focuses on the question of legitimacy and on the legitimation problems faced by modern states. This book is essential reading for anyone concerned with the key questions of social and political theory today. (shrink)

This book proposes a new theory of the origins of human language ability and presents an original account of the early evolution of language. It explains why humans are the only language-using animals, challenges the assumption that language is a consequence of intelligence, and offers a new perspective on human uniqueness. The author draws on evidence from archaeology, linguistics, cognitive science, and evolutionary biology. Making no assumptions about the reader's prior knowledge he first provides an introductory but critical survey of (...) all sources of evidence for language evolution. He then considers what language itself reveals about its own and human origins and evolution. He shows that certain central aspects of language do not, unexpectedly, reflect what they are used for, are maladapted for their function. He considers why this should be, and argues that these odd aspects of language reveal important clues about its evolutionary origin. The Origins of Complex Language fulfils the promise of its title. In doing so it turns upside down conventional theories about the relation between cognition and expression, truth and reference, and the co-evolution of mind and body. Original in conception, brilliantly executed, stylishly written, this book will attract a wide range of readers interested in the evolution and origins of language. (shrink)

Philosophers often assume that we can somehow quantitatively measure how good things are for people. But what does such talk mean? And what are the measures? In *Weighing Goods* John Broome offers one treatment of these questions. In his later *Weighing Lives* he offers a different treatment. This article discusses both positions but advocates a third. But while the three positions disagree about matters of meaning, they agree about the form of the measures. Roughly speaking, they are such that the (...) goodness of a lottery for an individual is equal to its expected goodness for her. (shrink)

In this unique and comprehensive book, George McCarthy examines the influence of Greek philosophy, literature, arts, and politics on the development of twentieth-century German social thought. McCarthy demonstrates that the classical spirit vitalized thinkers such as Weber, Heidegger, Freud, Marcuse, Arendt, Gadamer, and Habermas. With the romancing of antiquity, they transformed their understanding of the modern self, political community, and Enlightenment rationality. By viewing contemporary social theory from the framework of the classical world, McCarthy argues, we are (...) capable of thinking beyond the limits of modernity to new possibilities of human reason, science, beauty, and social justice. (shrink)

Jurgen Habermas is unquestionably one of the foremost philosophers writing today. His notions of communicative action and rationality have exerted a profound influence within philosophy and the social sciences. This volume examines the historical and intellectual contexts out of which Habermas' work emerged, and offers an overview of his main ideas, including those in his most recent publication. Amongst the topics discussed are his relationship to the Frankfurt School of critical theory and Marx, his unique contributions to the philosophy of (...) the social sciences, the concept of 'communicative ethics', and the critique of post-modernism. New readers and non-specialists will find this the most convenient, accessible guide to Habermas currently available. Advanced students will find a conspectus of recent developments in the interpretation of Habermas. (shrink)

Kant’s critique/doctrine distinction tracks the difference between a canon for the understanding’s proper use and an organon for its dialectical misuse. The latter reflects the dogmatic use of reason to attain a doctrine of knowledge with no antecedent critique. In the 1790s, Fichte collapses Kant’s distinction and redefines dogmatism. He argues that deriving a canon is essentially dialectical and thus yields an organon: critical idealism is properly a doctrine of science or Wissenschaftslehre. Criticism is furthermore said to refute dogmatism, by (...) which Fichte means Spinozism. Schelling repudiates Fichte’s position in his Philosophical Letters by reviving Kant’s distinction. First, ‘critique’ for Schelling names a canon that is valid for all systems—including Spinozism—and thus favours none—not even the Wissenschaftslehre. Second, Schelling coins ‘dogmaticism’ to refer to what Kant calls ‘dogmatism’: reason’s uncritical claim to doctrine. Hence, he says all systems—even Fichte’s—are susceptible to the ‘enthusiasm’ of mistaking themselves for doctrines or ‘objects of knowledge’, instead of subjectively valid ‘objects of freedom’. I reconstruct Schelling’s argument for reviving Kant’s distinction, while noting two consequences for German idealism. First, if criticism favours no system, a system’s origin cannot be an act of knowledge, e.g., intellectual intuition, but only an act of endorsement. Second, if dogmaticism entails enthusiasm, a system’s goal cannot be absolute knowledge, but only infinite striving. Hence, by retrieving Schelling’s notion of dogmaticism, we can both gain a better understanding of the Letters and register the impact of a core Kantian distinction on the German idealist project. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:A New Look at Animal-to-Human Organ TransplantationCharles R. McCarthy (bio)The acute shortage of organs available for transplantation into human beings combined with a new scientific understanding of the immune systems of both humans and animals make it probable that animal-to-human solid organ transplants (xenografts) may soon be attempted at a frequency rate unknown in the past. 1 Optimism about successful animal-to-human organ transplantation is greater than at any (...) previous time. The creation of a reliable supply of animal organs appears to be technically feasible. At least five major transplant centers in the United States are currently considering plans to pursue xenotransplantation. Although, at the time of this writing, no federal guidelines prohibit animal-to-human organ transplantation, the institutions considering such programs are awaiting deliberations on the subject by the Institute of Medicine (IOM), the Food and Drug Administration (FDA), and the Department of Health and Human Services (DHHS).The demand for organs suitable for transplantation into human beings greatly exceeds the supply. According to the United Network for Organ Sharing (UNOS 1996a), approximately 44,000 patients in the United states awaited organ transplantation at the end of 1995. In 1994, more than 3,000 patients died while on the transplant waiting list, and the demand for transplantable organs increases annually (UNOS 1996b). The figures do not include the hundreds or perhaps thousands of patients who could profit from a transplant, but who do not meet the requirements of the UNOS waiting list. Even if efforts to persuade persons to donate organs are redoubled, and even if the consent to donate organs should become a legal presumption, there is little prospect of developing a sufficient supply of transplantable human organs to meet the growing demand.As technical and biological barriers to successful animal-to-human xenografts are lowered, the prospect of raising dedicated colonies of animals, genetically altered to reduce the chances that human hosts will reject organs derived from them, is being seriously discussed. 2 Such colonies do not exist at the present time. [End Page 183] However, if new techniques for animal-to-human transplantation prove successful, it is likely that animal colonies will be established to provide a ready and predictable supply of organs for transplantation to humans. Some believe that commercial investment in colonies of purpose-bred animals to serve as a source of transplantable organs is close at hand (Leventhal 1994).New drugs and new combinations of existing drugs have improved the chances of successful medical outcomes for patients who receive solid organ transplants. It is now recognized that serial application of immunosuppressive drugs can reduce the likelihood of both short- and long-term organ rejection (Makowka 1994). Improved understanding of both human and animal immune systems, insights into histocompatibility, new agents to control graft-versus-host disease, animal breeding programs for the production of transgenic animals, and improved surgical techniques have opened, as never before, the possibility of successful transfer of organs from animals to humans. Some rate the chances of good patient outcomes (usually measured in terms of time of patient survival) as high, others make more conservative predictions, but virtually all experts believe that the chances for successful human patient outcomes resulting from xenotransplantation are improved. Because many patients face immanent death unless their organs can be replaced, there can be little doubt that many humans will readily consent to xenotransplantation.History Suggests CautionDespite the advances in immunosuppression, the frequency of failure in past animal-to-human xenograft attempts should temper the optimism of the transplant community. To date, all efforts to prolong human life by implanting solid organs from animals into human recipients have failed. The first attempts at animal-to-human xenotransplantation early in the twentieth century resulted in the early death of all recipients (Neuhof 1923). More sophisticated efforts at xenotransplantation occurred in the late 1960s and early 1970s, a period when anti-rejection drugs began to make allografts more feasible. Although one human recipient of a xenograft survived for nine months (with poor quality of life), most patients died within a matter of minutes, hours, or a few days following the transplantation of organs from chimpanzees or baboons (Starzl... (shrink)

The significance of consciousness in modern science is discussed by leading authorities from a variety of disciplines. Presenting a wide-ranging survey of current thinking on this important topic, the contributors address such issues as the status of different aspects of consciousness; the criteria for using the concept of consciousness and identifying instances of it; the basis of consciousness in functional brain organization; the relationship between different levels of theoretical discourse; and the functions of consciousness.

This powerful critique of Marx's historical materialism - as a theory of power, as an account of history, and as a political theory -has been revised to take note of the profound intellectual and political changes that have occurred since the first edition was published. Reviews from the first edition 'Giddens draws upon a formidable knowledge of anthropology, archaeology, geography, and philosophy to demonstrate the limitations of Marxism and to formulate his own interpretation of the history of societies ... He (...) does a masterful job of setting his theory within a historical and critical framework of writings on Marx. His clarity of thought and his deft and often humorous handling of the unavoidable jargon of sociology and Marxist political theory makes this book a critical work of the highest quality.' Journal of International Law and Politics 'By contrast with many practictioners in the rather murky area of social theory, Giddens clearly seeks to make himself understood, and he has the useful quality of provoking one to argument. He has let light into some dark places.' The Times Higher Education Supplement 'Although Marx, Durkheim, and Weber continue to fill more index space than any other authors, Critique is Giddens's most explicit and committed statement of his own conceptualization of social theory ... It is his most original and therefore most vulnerable book, at once a cause for celebration and an invitation to critical reappraisal of the author's entire theoretical project.' Environment and Planning. (shrink)

In this paper, I examine a variety of agents that appear in Kantian ethics in order to determine which would be necessary to make a robot a genuine moral agent. However, building such an agent would require that we structure into a robot’s behavioral repertoire the possibility for immoral behavior, for only then can the moral law, according to Kant, manifest itself as an ought, a prerequisite for being able to hold an agent morally accountable for its actions. Since building (...) a moral robot requires the possibility of immoral behavior, I go on to argue that we cannot morally want robots to be genuine moral agents, but only beings that simulate moral behavior. Finally, I raise but do not answer the question that if morality requires us to want robots that are not genuine moral agents, why should we want something different in the case of human beings. (shrink)

Dr Edwards' stimulating and provocative book advances the thesis that the appropriate axiomatic basis for inductive inference is not that of probability, with its addition axiom, but rather likelihood - the concept introduced by Fisher as a measure of relative support amongst different hypotheses. Starting from the simplest considerations and assuming no more than a modest acquaintance with probability theory, the author sets out to reconstruct nothing less than a consistent theory of statistical inference in science.

Symbolic arithmetic is fundamental to science, technology and economics, but its acquisition by children typically requires years of effort, instruction and drill1,2. When adults perform mental arithmetic, they activate nonsymbolic, approximate number representations3,4, and their performance suffers if this nonsymbolic system is impaired5. Nonsymbolic number representations also allow adults, children, and even infants to add or subtract pairs of dot arrays and to compare the resulting sum or difference to a third array, provided that only approximate accuracy is required6–10. Here (...) we report that young children, who have mastered verbal counting and are on the threshold of arithmetic instruction, can build on their nonsymbolic number system to perform symbolic addition and subtraction11–15. Children across a broad socio-economic spectrum solved symbolic problems involving approximate addition or subtraction of large numbers, both in a laboratory test and in a school setting. Aspects of symbolic arithmetic therefore lie within the reach of children who have learned no algorithms for manipulating numerical symbols. Our findings help to delimit the sources of children’s difficulties learning symbolic arithmetic, and they suggest ways to enhance children’s engagement with formal mathematics. We presented children with approximate symbolic arithmetic problems in a format that parallels previous tests of non-symbolic arithmetic in preschool children8,9. In the first experiment, five- to six-year-old children were given problems such as ‘‘If you had twenty-four stickers and I gave you twenty-seven more, would you have more or less than thirty-five stickers?’’. Children performed well above chance (65.0%, t1952.77, P 5 0.012) without resorting to guessing or comparison strategies that could serve as alternatives to arithmetic. Children who have been taught no symbolic arithmetic therefore have some ability to perform symbolic addition problems. The children’s performance nevertheless fell short of performance on non-symbolic arithmetic tasks using equivalent addition problems with numbers presented as arrays of dots and with the addition operation conveyed by successive motions of the dots into a box (71.3% correct, F1,345 4.26, P 5 0.047)8.. (shrink)

This collection of articles and associated discussion papers focuses on a problem that has attracted increasing attention from linguists and psychologists throughout the world during the past several years. Reduced to essentials, the problem is that of discovering the character of the mental capacities that make it possible for human beings to attain knowledge of their language on the basis of fragmentary and haphazard early linguistic experience. A fundamental assumption running through all of these contributions is that people possess strong (...) innate predispositions that are critical for success in this task. (shrink)