Formal models of argumentation have been investigated in several areas, from multi-agent systems and artificial intelligence (AI) to decision making, philosophy and law. In artificial intelligence, logic-based models have been the standard for the representation of argumentative reasoning. More recently, the standard logic-based models have been shown equivalent to standard connectionist models. This has created a new line of research where (i) neural networks can be used as a parallel computational model for argumentation and (ii) neural networks can be used (...) to combine argumentation, quantitative reasoning and statistical learning. At the same time, non-standard logic models of argumentation started to emerge. In this paper, we propose a connectionist cognitive model of argumentation that accounts for both standard and non-standard forms of argumentation. The model is shown to be an adequate framework for dealing with standard and non-standard argumentation, including joint-attacks, argument support, ordered attacks, disjunctive attacks, meta-level attacks, self-defeating attacks, argument accrual and uncertainty. We show that the neural cognitive approach offers an adequate way of modelling all of these different aspects of argumentation. We have applied the framework to the modelling of a public prosecution charging decision as part of a real legal decision making case study containing many of the above aspects of argumentation. The results show that the model can be a useful tool in the analysis of legal decision making, including the analysis of what-if questions and the analysis of alternative conclusions. The approach opens up two new perspectives in the short-term: the use of neural networks for computing prevailing arguments efficiently through the propagation in parallel of neuronal activations, and the use of the same networks to evolve the structure of the argumentation network through learning (e.g. to learn the strength of arguments from data). (shrink)

This book explores why, regarding practical reasoning, humans are sometimes still faster than artificial intelligence systems. It is the first to offer a self-contained presentation of neural network models for many computer science logics.

Nurses and physicians may experience ethical conflict when there is a difference between their own values, their professional values or the values of their organization. The distribution of limited health care resources can be a major source of ethical conflict. Relatively few studies have examined nurses' and physicians' ethical conflict with organizations. This study examined the research question ‘What are the organizational ethical conflicts that hospital nurses and physicians experience in their practice?’ We interviewed 34 registered nurses, 10 nurse managers, (...) and 31 physicians as part of a larger study, and asked them to describe their ethical conflicts with organizations. Through content analysis, we identified themes of nurses' and physicians' ethical conflict with organizations and compared the themes for nurses with those for physicians. (shrink)

In his own writings, Rawls purposively used only a loose characterization of the basic structure, but two prominent misinterpretations highlight the current need for a more detailed account. First, G.A. Cohen argues that the Rawlsian focus on the basic structure is arbitrary due to the Rawlsian appeal to profound effects. Second, some theorists conflate the justification of coercion with the assessment of a basic structure by defining the basic structure as the coercive structure. Both misinterpretations can be corrected by carefully (...) specifying what social institutions are and explaining which social institutions come together to form the basic structure of society. (shrink)

Features include a comprehensive review of existing material, combined with new perspectives to equip students for the challenges in the work environment; chapter overviews and student learning objectives offer a solid and useful framework in which to organise study; diagrams and charts present overviews and contexts for the subject to act as useful revision aids; effective pedagogy including a review of the arguments considered, a menu of seminar topics, and questions in every chapter, serving as an ideal basis for seminar (...) study; and additional open-ended simulations to allow students to work through unfolding scenarios. (shrink)

Much of the literature on clinical ethical conflict has been specific to a specialty area or a particular patient group, as well as to a single profession. This study identifies themes of hospital nurses’ and physicians’ clinical ethical conflicts that cut across the spectrum of clinical specialty areas, and compares the themes identified by nurses with those identified by physicians. We interviewed 34 clinical nurses, 10 nurse managers and 31 physicians working at four different Canadian hospitals as part of a (...) larger study on clinical ethics committees and nurses’ and physicians’ use of these committees. We describe nine themes of clinical ethical conflict that were common to both hospital nurses and physicians, and three themes that were specific to physicians. Following this, we suggest reasons for differences in nurses’ and physicians’ ethical conflicts and discuss implications for practice and research. (shrink)

State University of New York Press, 1993, 186pp.

I argue that acknowledging Hume as a doxastic naturalist about belief in a deity allows an elegant, holistic reading of his Dialogues. It supports a reading in which Hume's spokesperson is Philo throughout, and enlightens many of the interpretive difficulties of the work. In arguing this, I perform a comprehensive survey of evidence for and against Philo as Hume's voice, bringing new evidence to bear against the interpretation of Hume as Cleanthes and against the amalgamation view while correcting several standard (...) mistakes. I ultimately isolate the interpretation of Philo's Reversal at the end of the Dialogues as of paramount importance, and show how my naturalistic interpretation makes this, and other notoriously difficult passages, unproblematic. (shrink)

The dominant conventionalist view explains the wrong of breaking a promise as failing to do our fair share in supporting the practice of promise-keeping. Yet, this account fails to explain any unique moral standing that a promisee has to demand that the promisor keep the promise. In this paper, I provide a conventionalist response to this problem. In any cooperative practice, participants stand as both beneficiary and contributor. As a beneficiary, they are morally required to follow the rules of the (...) practice. As a contributor, they have claims on other participants to follow the rules. According to the rules of promise-keeping, a promisee has a unique claim on the promisor, and the personal wrong of breaking a promise should be understood as the violation of this unique and practice-dependent claim. (shrink)

BackgroundPalliative sedation and analgesia are employed in patients with refractory and intractable symptoms at the end of life to reduce their suffering by lowering their level of consciousness. The doctrine of double effect, a philosophical principle that justifies doing a “good action” with a potentially “bad effect,” is frequently employed to provide an ethical justification for this practice. Main textWe argue that palliative sedation and analgesia do not fulfill the conditions required to apply the doctrine of double effect, and therefore (...) its use in this domain is inappropriate. Furthermore, we argue that the frequent application of the doctrine of double effect to palliative sedation and analgesia reflects physicians’ discomfort with the complex moral, intentional, and causal aspects of end-of-life care. ConclusionsWe are concerned that this misapplication of the doctrine of double effect can consequently impair physicians’ ethical reasoning and relationships with patients at the end of life. (shrink)

Undercover filming is a method commonly used by animal activist groups to expose animal cruelty and it is important to consider the effects of publically releasing video footage of cruel practices on the viewers’ mental health. Previously, we reported that members of the Australian public were emotionally distressed soon after viewing media broadcasts of cruelty to Australian cattle exported for slaughter in Indonesia in 2011. To explore if there were any long term impacts from exposure to media on this issue, (...) a self-selecting group of 15 people who were exposed to a documentary exposé of the cruelty were re-interviewed 12 months later. Nearly all recalled their strong initial reaction to the footage. Approximately one half of the respondents who initially had had a strong emotional reaction to the footage reported negative reactions that were still strong even after this period of time. They reported potential triggers for these feelings. Of the rest, some managed to internalise their feelings. Approximately one half of respondents were unaware of continued live export exposés, suggesting less prominent media coverage. Despite the aversion and repulsion reported after viewing the initial coverage, most respondents said they would choose to watch another broadcast of animal cruelty and nearly all supported undercover investigations as a means of revealing cruelty to animals. We conclude that many people viewing footage of cruelty to animals will have long term memory of this, but that they would prefer to be informed about the issues and not be protected from them. (shrink)

Fractal time fluctuations of the spectral “1/f” form are universal in natural self-organizing systems. Neurobiology is uniquely infused with fractal fluctuations in the form of statistically self-similar clusters or bursts on all levels of description from molecular events such as protein chain fluctuations, ion channel currents and synaptic processes to the behaviors of neural ensembles or the collective behavior of Internet users. It is the thesis of this essay that the brain self-organizes via a vertical collation of these spontaneous events (...) in order to perceive the world and generate adaptive behaviors. REM sleep, which coalesces from self-similar clusters of burst-within-burst behavior during ontogeny, is essential to cognitive-emotional function, and has recurrent fractal organization. Empirical fMRI observations further support the association of fractal fluctuations in the temporal lobes, brainstem and cerebellum during the expression of emotional memory, spontaneous fluctuations of thought and meditative practice. Cognitive-emotional integration arises as amygdaloid-brainstem-cerebellar systems harmonize the vertical “1/f” symphony of coupled isochronous cortical oscillations in the pursuit of mindfulness. (shrink)

Most liberals agree that governments should protect certain basic liberties, such as freedom of speech, freedom of religion and freedom of the person. Liberals disagree, however, about whether free market rights should also be protected. By “free market rights,” we mean those rights typically associated with laissez-faire economic systems such as freedom of contract, a right to market returns, and claims to privately own the means of production.We do not use the phrase “economic liberties,” as Tomasi does, because it does (...) not distinguish between the “economic rights” defended by classical liberal and those defended by socialists. Those on the right often see such freedoms as core liberal commitments, while those on the left argue that an economic system should be organized to protect the interests of the less advantaged members of society. If free market rights should be protected, then most existing societies are unjust. These societies fail the liberal standard in the same ways as th .. (shrink)

As the frequency of internet-based research has increased, it is important for researchers to consider how the conditions in which data are collected may influence the risks to participants. In particular, because internet-based data collection often occurs outside a clinical or research setting, there may be unintentional disclosures of a participant's involvement in a research study of which the researcher is unaware. The current analysis examined the responses of men who have sex with men participating in an internet-based HIV behavioural (...) risk study when queried about the possible disclosure of their participation in the study. Fewer than 2% of participants indicated that their participation in the research study was disclosed, and all but one indicated no negative outcomes associated with the disclosure. As the field of online research continues to expand, it is important to consider risks that are unique to internet-based research, and to monitor these risks to ensure that the confidentiality of research subjects is maintained. (shrink)

In E.N. I. c. 5 Aristotle is considering divers views as to what constitutes Eudaimonia. He told us in c. 4, 2–3 that there are many conflicting opinions on the subject. The Many identify Happiness with some palpable good, such as pleasure, wealth, honour, but the Wise identify it with something beyond the Many, while [Plato] denied it to be any specific good at all. Of all these views we should consider such as have many adherents or are considered to (...) be reasonable. Accordingly, the Universal Good is considered in c. 6 after consideration in c. 5 of five particular goods—pleasure in the form of bodily pleasure, honour, wealth, virtue [and, implied in the theoretic Life, wisdom]. These five goods are brought into relation with four Lives—viz. pleasure with the apolaustic; honour and virtue with the political; [wisdom] with the theoretic; wealth with the business or money-making Life; and the first three Lives are called προέχοντες. There is nothing in this introduction of the Lives to astonish us; for, as Aristotle himself tells us, τò ληθς ν τοȋς πρακτικοȋς κ τν ργων κα τοû βίου κρίνεται . But there is much difference of opinion as to the argument he draws from the Lives. According to the view now submitted for consideration, the argument is that when a specific good, which some suppose to be Eudaimonia, is also the end of a ‘pre-eminent’ Life, then there is some prima facie probability in the view that that specific good is Eudaimonia. (shrink)

In The Tyranny of the Ideal, Gerald Gaus gives an extended argument on behalf of the “Open Society.” Instead of claiming that it is uniquely best from some privileged moral perspective, he argues for the Open Society by showing why it is acceptable to many perspectives. In this way, Gaus argues for a liberal market-based society in a way that treats deep diversity as a fundamental feature of social life. However, the argument falters at four important points. When taken together, (...) these four problems significantly limit the significance of Gaus’s conclusions. (shrink)

Theories of truth and vagueness are closely connected; in this article, I draw another connection between these areas of research. Gupta and Belnap’s Revision Theory of Truth is converted into an approach to vagueness. I show how revision sequences from a general theory of definitions can be used to understand the nature of vague predicates. The revision sequences show how the meaning of vague predicates are interconnected with each other. The approach is contrasted with the similar supervaluationist approach.