This article addresses the ability of Parallel Distributed Processing (PDP) networks to generate stagewise cognitive development in accordance with Piaget's theory of cognitive epigenesis. We carried out a replication study of the simulation experiments by McClelland (1989) and McClelland and Jenkins (1991) in which a PDP network learns to solve balance scale problems. In objective tests motivated from catastrophe theory, a mathematical theory of transitions in epigenetical systems, no evidence for stage transitions in network performance was found. It is concluded (...) that PDP networks lack the ability to recover the positive outcomes of analogous catastrophe analyses of real cognitive developmental data. In an attempt to further characterize the learning behaviour of PDP networks, we carried out a second simulation study using the discrimination‐shift paradigm. The results thus obtained indicate that PDP learning is compatible with the learning of stimulus‐response relationships, not with the acquisition of mediating rules such as conceived in (neo‐)Piagetian theory. In closing, we speculate about the feasibility of simulating stagewise development with alternative network architectures. (shrink)

‘Water is H2O’ is one of the most frequently cited sentences in analytic philosophy, thanks to the seminal work of Saul Kripke and Hilary Putnam in the 1970s on the semantics of natural kind terms. Both of these philosophers owe an intellectual debt to the empiricist metaphysics of John Locke's Essay Concerning Human Understanding, while disagreeing profoundly with Locke about the reality of natural kinds. Locke employs an intriguing example involving water to support his view that kinds (or ‘species’), such (...) as water and gold, are the workmanship of the human mind. This is the point of his story about a winter visitor to England from Jamaica, who is astonished to find that the water in his basin has turned solid overnight, and proceeds to call it ‘hardened water’. Locke criticizes this judgement, maintaining that it is more consonant with common sense to regard water and ice as different kinds of substance. Putnam, by implication, disagrees. Deploying his imaginary example of Twin Earth—a distant planet where a watery-looking substance, XYZ, rather than H2O, fills the oceans and rivers—he maintains that common sense supports the judgement that XYZ and H2O, despite their superficial similarity, are not the same kind of substance, precisely because their molecular compositions are different. Here it will be argued that both views are mistaken, but that, in this dispute, Locke has more right on his side than his modern opponents do. (shrink)

It has long been debated whether objects are ‘sortally’ individuated. This paper begins by clarifying some of the key terms in play—in particular, ‘sortal’, ‘individuation’, and ‘object’. The term ‘individuation’ is taken to have both a cognitive and a metaphysical sense, in the former denoting the singling out of an object in thought and in the latter a determination relation between entities. ‘Sortalism’ is defined as the doctrine that only as falling under some specific sortal concept can an object be (...) successfully singled out in thought. It is argued that such a view is too strong, but that a weaker one, ‘categorialism’, can be defended, this implying that a thinker cannot successfully single out an object in thought without having at least an implicit grasp of the criterion of identity that the object satisfies. (shrink)

Locke's main semantic thesis is that words stand for, or signify, ideas. He says this over and over again, though the phraseology he employs varies. In Book III chapter 2 alone we find the following statements of the thesis: ‘ … Words … come to be made use of by Men, as the Signs of their Ideas’ [III.2.1; 405:10-11); The use then of Words, is to be sensible Marks of Ideas; and the Ideas they stand for, are their proper and (...) immediate Signification’ [III.2.1; 405:15-17]; ‘Words in their primary or immediate Signification, stand for nothing, but the Ideas in the Mind of him that uses them’ [III.2.2; 405:21-2]; That then which Words are the Marks of, are the Ideas of the Speaker’ [III.2.2; 405:27-8]; ‘ …. (shrink)

The practice of coercive measures in psychiatry is controversial. Although some have suggested that it may be acceptable if patients are a danger to others or to themselves, others committed themselves to eliminate it. Ethical, legal and clinical considerations become more complex when the mental incapacity is temporary and when the coercive measures serve to restore autonomy. We discuss these issues, addressing the conflict between autonomy and beneficence/non-maleficence, human dignity, the experiences of patients and the effects of coercive measures. We (...) argue that an appeal to respect autonomy and/or human dignity cannot be a sufficient reason to reject coercive measures. All together, these ethical aspects can be used both to support and to reject a non-seclusion approach. The total lack of controlled trials about the beneficial effects of coercive measures in different populations however, argues against the use of coercive measures. (shrink)

This is the first full-length translation of a work by the influential medieval logician Walter Burley. As such, it is an important addition to our knowledge of medieval logic, and will undoubtedly spur further research.

How could the self be a substance? There are various ways in which it could be, some familiar from the history of philosophy. I shall be rejecting these more familiar substantivalist approaches, but also the non-substantival theories traditionally opposed to them. I believe that the self is indeed a substance—in fact, that it is a simple or noncomposite substance—and, perhaps more remarkably still, that selves are, in a sense, self-creating substances. Of course, if one thinks of the notion of substance (...) as an outmoded relic of prescientific metaphysics—as the notion of some kind of basic and perhaps ineffablestuff—then the suggestion that the self is a substance may appear derisory. Even what we ordinarilycall‘stuffs’—gold and water and butter and the like—are, it seems, more properly conceived of as aggregates of molecules or atoms, while the latter are not appropriately to be thought of as being ‘made’ of any kind of ‘stuff’ at all. But this only goes to show that we need to think in terms of a more sophisticated notion of substance—one which may ultimately be traced back to Aristotle's conception of a ‘primary substance’ in theCategories, and whose heir in modern times is W. E. Johnson's notion of the ‘continuant’. It is the notion, that is, of a concrete individual capable of persisting identically through qualitative change, a subject of alterable predicates that is not itself predicable of any further subject. (shrink)

The work of joachim jungius on the logic of relations was not as original as some authors have thought, But he did make it clear that relational inferences should be distinguished from categorical inferences; and he was the first to recognize the argument 'a rectis ad obliqua', An example of which is 'all circles are figures, Therefore whoever draws a circle draws a figure'.

Josse Clichtove represents a turning point in the history of disputation, for he combines one of the earliest accounts of the doctrinal disputation with one of the latest accounts of the obligational disputation. This paper describes the nature and significance of the theories that he offered. Particular attention is paid to the doctrines of truth, necessity and possibility which lie behind his doctrines; and also to the light which his work throws on the aims and nature of an obligational disputation.

The Luck Argument is among the most influential objections to the main brand of libertarianism about metaphysical freedom and moral responsibility. In his work, Alfred Mele [2006. Free will and luck . Oxford: Oxford University Press] develops - and then attempts to defeat - the literature's most promising version of the Luck Argument. After explaining Mele's version of the Luck Argument, I present two objections to his novel reply to the argument. I argue for the following two claims: (1) Mele's (...) reply is either otiose or undermined by his own defense of the Luck Argument from a different objection and (2) Mele's reply turns out to lack the form required to engage the step of the Luck Argument it targets. Having shown that the failure of Mele's novel attack is overdetermined, I close by defending a different (and, I believe, decisive) objection to the Luck Argument - which, as it happens, lurks right under Mele's nose. (shrink)

(No abstract is available for this citation).

This paper fortifies and defends the so called Sufficiency Argument (SA) against Classical Invariantism. In Sect. 2,I explain the version of the SA formulated but then rejected by Brown (2008a). In Sect. 3, I show how cases described by Hawthorne (2004), Brown (2008b), and Lackey (forthcoming) threaten to undermine one or the other of the SA's least secure premises. In Sect. 4,I buttress one of those premises and defend the reinforced SA from the objection developed in Sect. 3.

Lorazepam has been repeatedly shown to induce memory impairments. The effects of this benzodiazepine on the processes involved in the strategic regulation of memory accuracy have not as yet been explored. An experimental procedure that delineates the role of monitoring and control processes was used. Fifteen lorazepam and 15 placebo subjects were examined using a semantic memory task that combined both a forced- and a free-report option and a no-incentive and an incentive condition. Memory accuracy was lower in the lorazepam (...) than in the placebo group. Lorazepam impaired control sensitivity (the extent to which volunteering of answers is affected by the confidence judgments). While the absolute aspect of monitoring was impaired (calibration scores), both the discriminative aspect (the ability to distinguish between correct and incorrect answers) and the response criterion setting (the confidence threshold set for volunteering a report) were spared. The pharmacological dissociation between monitoring effectiveness and control sensitivity indicates that these two components involve distinct processes. (shrink)

It might be best to begin this discussion of the historian's predicament with a concrete experience. In the early summer of 1944, as the German army retreated northwards in Italy to establish a more defensible front against the advancing Allied forces along the so-called “Gothic Line” in the Appenines, its units carried out a number of massacres, usually justified as reprisals against local “bandit” (i.e., partisan) activity. Fifty years later some of these village massacres in the province of Arezzo, hitherto (...) left to the memories of the villages’ own survivors and the local historians of the Resistance, provided the occasion for an international conference on the memory of German massacres in World War II. (shrink)

In the March 1971 issue of Dialogue Professors E.H. Madden and P.H. Hare attempt with much ingenuity and resource to resuscitate a pre-Humean theory of causal connection. Firmly disowning the “epistemological and metaphysical disasters” that have led to “terrible consequences”,, and making only a mildly favourable gesture in the direction of Michotte, they yet claim that the defence of Hume by modern regularists, even when abetted by the weapons of phenomenology, can be refuted by such indubitable facts as that we (...) observe avalanches destroying villages, waves eating away the shoreline and the “wind-bending-the-trees”. (shrink)

This paper falls into three parts. In the first I retrace the steps which, have led many to consider that there is a ‘problem of induction’ which may have only a sceptical solution. In the second I explain why I think we cannot rest content with such a solution. In the third I try to show how a new approach to certain key concepts in the philosophy of science—in particular the concept of natural law —may help towards a non-sceptical resolution (...) of the problem. (shrink)

In some of the most important recent work in religious epistemology, Paul Moser (2002, 2004, 2008) develops a multifaceted reply to a prominent attack on belief in God—what we’ll call the Hiddenness Argument. This paper raises a number of worries about Moser’s novel treatment of the Hiddenness Argument. After laying out the version of that argument Moser most explicitly engages, we explain the four main elements of Moser’s reply and argue that it stands or falls with two pieces in particular—what (...) we call the Purposively Available Evidence Argument and the Cognitive Idolatry Argument. We then show that the Cognitive Idolatry Argument fails, leaving the Purposively Available Evidence Argument as Moser’s only potentially viable objection to the Hiddenness Argument. We conclude that Moser’s treatment of the Hiddenness Argument depends crucially on some controversial epistemological claims about certain of our moral beliefs, and is thus considerably more vulnerable than many have recognized. (shrink)

Locked-in syndrome (LIS) is one of the most dramatic neurological outcomes and has a profound impact on patients and their families. Most patients have intact cognition and intellectual ability and perception. Communication is possible with eyelid and/or eyeball movement. According to the literature, the wish to die is not an important issue in acute and chronic LIS. This study describes and analyses the ethical decision-making process in two opposite cases of LIS in the intensive care unit. One patient expressed the (...) wish to prolong her life for as long as possible; the other patient asked for deliberate termination of life. Both wishes were honoured. In conclusion, most patients with LIS are competent and intellectually intact. In The Netherlands the autonomy of the patient is respected by law. In respecting this autonomy, medical choices can be different in comparable patients. (shrink)

I take this opportunity of correcting a particularly reprehensible error of my own on p. 140 of my edition of these poems. At A.A. 1. 730 read ‘…hoc multri †non ualuisse† putant’; and at 11. 3-4 of the critical apparatus read ‘equidem multi utique’ eqs. In other words, the manuscripts are unanimous in offering multi. I hope that Dr. Lenz will be glad to have this evidence of our common humanity.

This aper is in the main a critical study of Robert Kane's account of the nature of Free Choice. I begin by briefly describing Kane's theory. I then consider four questions about a concept that is...