Working memory limits are best defined in terms of the complexity of the relations that can be processed in parallel. Complexity is defined as the number of related dimensions or sources of variation. A unary relation has one argument and one source of variation; its argument can be instantiated in only one way at a time. A binary relation has two arguments, two sources of variation, and two instantiations, and so on. Dimensionality is related to the number of chunks, because (...) both attributes on dimensions and chunks are independent units of information of arbitrary size. Studies of working memory limits suggest that there is a soft limit corresponding to the parallel processing of one quaternary relation. More complex concepts are processed by or In segmentation, tasks are broken into components that do not exceed processing capacity and can be processed serially. In conceptual chunking, representations are to reduce their dimensionality and hence their processing load, but at the cost of making some relational information inaccessible. Neural net models of relational representations show that relations with more arguments have a higher computational cost that coincides with experimental findings on higher processing loads in humans. Relational complexity is related to processing load in reasoning and sentence comprehension and can distinguish between the capacities of higher species. The complexity of relations processed by children increases with age. Implications for neural net models and theories of cognition and cognitive development are discussed. (shrink)

The core issue of our target article concerns how relational complexity should be assessed. We propose that assessments must be based on actual cognitive processes used in performing each step of a task. Complexity comparisons are important for the orderly interpretation of research findings. The links between relational complexity theory and several other formulations, as well as its implications for neural functioning, connectionist models, the roles of knowledge, and individual and developmental differences, are considered.

Current conceptions of the nature of human reasoning make it no longer tenable to assess children's inference by reference to the norms of logical inference. Alternatively, the complexity of the mental models employed in children's inferences can be analysed. This approach is applied to transitive inference, class inclusion, categorical induction, theory of mind, oddity, categorical syllogisms, analogy, and reasoning deficits. It is argued that a coherent account of children's reasoning emerges in that there is correspondence between tasks at the same (...) level of complexity across different domains, and that the inferences of younger children, while impressive and important, are consistently simpler than those of older children. (shrink)

Bayesian rationality is an important contribution to syllogistic inference, but it has limitations. The claim that confidence in a conclusion is a function of informativeness of the max-premise is anomalous because this is the least probable premise. A more plausible account is that confidence is inversely related to complexity. Bayesian rationality should be supplemented with principles based on cognitive complexity.

Cowan's review shows that a short-term memory limit of four items is consistent with a wide range of phenomena in the field. However, he does not explain that limit, whereas an existing theory does offer an explanation for capacity limitations. Furthermore, processing capacity limits cannot be reduced to storage limits as Cowan claims.

The distinction between uninformed learning (type-1) and learning based on recoding using prior information (type-2) helps to clarify some long-standing psychological problems, including misunderstanding of mathematics by children, the need for active construction of concepts in cognitive development, and the difficulty of configural learning tasks. However, an alternative to recoding some type-2 tasks is to represent the input as separate dimensions, which are processed jointly. This preserves the original structure, but is subject to processing capacity limitations.

We propose that the missing link from nonhuman to human cognition lies with our ability to form, modify, and re-form dynamic bindings between internal representations of world-states. This capacity goes beyond dynamic feature binding in perception and involves a new conception of working memory. We propose two tests for structured knowledge that might alleviate the impasse in empirical research in nonhuman animal cognition.

An application of the Method of Analysis of Relational Complexity (MARC) to suppositional reasoning in the knight-knave task is outlined. The task requires testing suppositions derived from statements made by individuals who either always tell the truth or always lie. Relational complexity (RC) is defined as the number of unique entities that need to be processed in parallel to arrive at a solution. A selection of five ternary and five quaternary items were presented to 53 psychology students using a pencil (...) and paper format. A computer-administered version was presented to 50 students. As predicted, quaternary problems were associated with higher error rates and longer response times than ternary problems. The computer-administered form was more difficult than the pencil and paper version of the test. These differences are discussed in terms of RC theory and alternative processing accounts. Together, they indicate that the relational complexity metric is a useful and parsimonious way to quantify complexity of reasoning tasks. (shrink)

We argue that if a different definition of sentence complexity is adopted and processing capacity is assessed in a way that is consistent with that definition, then the Caplan & Waters distinction between interpretive versus postinterpretive processing is unnecessary insofar that it applies to the thematic role assignment in relative-clause sentences.

Two challenges facing Archbishop John Bede Polding after arriving in Sydney in 1835 were providing for the spiritual needs of Catholics in the colony and managing their affairs in a way that attempted to guarantee a good working relationship with the government. It became apparent to Polding that education was fundamental in developing both these areas. Polding regarded education as a means of social advancement, beneficial to those 'on the lower steps of the social scale'. He wanted a 'native (...) race of priests and statesmen, of lawyers and physicians, of solicitors, and sailors, and artists'. He sought to emulate Downside Abbey's approach to education in Australia; specifically in the field of secondary education that would 'transcend the mere bread-and-butter preoccupations of the masses and prepare an 'elite' from among whom the offices of Church and state could eventually be filled'. Polding's goal was to create schools that would provide a Catholic education for its students founded on the principles of Benedictine ideals. But, as Francesca Fitz-Walter argues, it was the colonial conditions of the time that placed obstacles on Polding's expression of the Benedictine ideal in education. Given that the colonial conditions of the time imposed restrictions on the expression of the Benedictine ideal, Polding still maintained that a lifelong education was significant in developing in the student the ability to make an informed Christian response to whatever circumstance might emerge in the life of that person. (shrink)

In this article I will examine the purchase and opening of Lyndhurst College in 1852 and its contribution to early Catholic education in Sydney. In a previous article, I discussed the establishment of St Mary's Seminary by Archbishop John Bede Polding in 1836. Lyndhurst College was another Benedictine school set up by Polding in Sydney that gave students of wealthier Catholics the opportunity to prepare for the church, university and the civil service.

This article will explore the musicianship of Bishop Charles Henry Davis, osb, coadjutor to Australia's first Catholic Archbishop, John Bede Polding, osb. It will focus on his musical contribution to the early Australian Catholic Church-his ability to improvise, compose, conduct and perform during his short time as bishop at St Mary's, Sydney.

This paper investigates the magnet as a classic “boundary object” of modern technoscientific culture. Equally at home in the nursery, dynamo, measuring instrument and navigational compass, its capricious performance nevertheless persistently eluded the powers of nineteenth century electromagnetic expertise in pursuit of the completely “permanent” magnet. Instead the untamed magnet’s resilient secularity required its makers to draw upon ancient techniques of chemical manipulation, heat treatment and maturation to render it eventually sufficiently stable in behaviour for orderly use in modern engineering. (...) The precise methods for accomplishing this quasi-permanence were typically protected by trade secrecy – until that is Marie Sklodowska Curie’s first research publication opened up this topic for rigorous comparative research in 1898. Nevertheless, over the next quarter century her work in this field was gradually eclipsed by heavily gendered citation practices, just as the futility of attempting to accomplish complete permanency in magnets was eventually established by Sydney Evershed in the 1920s. (shrink)

What is time? When no-one asks you, you know, but when you read the recent literature in philosophy of time, you don’t know. Out of Time, by Sam Baron, Kristie Miller and Jonathan Tallant, and Dynamic Realism, by Tina Röck, present very different accounts of time. They differ methodologically, with a focus on experimental philosophy, in the form of the Sydney Time Studies, and live hypotheses in the theoretical physics of quantum gravity on the one hand, and phenomenology combined (...) with process philosophy on the other. And they arrive at different conclusions. Nonetheless, I will try to show, they present complementary approaches to time in a number of ways. (shrink)

Creativity is one of the least understood aspects of intelligence and is often seen as intuitive' and not susceptible to rational enquiry. Recently, however, there has been a resurgence of interest in the area, principally in artificial intelligence and cognitive science, but also in psychology, philosophy, computer science, logic, mathematics, sociology, and architecture and design. This volume brings this work together and provides an overview of this rapidly developing field. It addresses a range of issues. Can computers be creative? Can (...) they help us to understand human creativity? How can artificial intelligence (AI) enhance human creativity? How, in particular, can it contribute to the sciences of the artificial', such as design? Does the new wave of AI (connectionism, geneticism and artificial life) offer more promise in these areas than classical, symbol-handling AI? What would the implications be for AI and cognitive science if computers could not be creative? These issues are explored in five interrelated parts, each of which is introducted and explained by a leading figure in the field. - Prologue (Margaret Boden) - Part I: Foundational Issues (Terry Dartnall) - Part II: Creativity and Cognition (Graeme S. Halford and Robert Levinson) - Part III: Creativity and Connectionism (Chris Thornton) - Part IV: Creativity and Design (John Gero) - Part V: Human Creativity Enhancement (Ernest Edmonds) - Epilogue (Douglas Hofstadter) For researchers in AI, cognitive science, computer science, philosophy, psychology, mathematics, logic, sociology, and architecture and design; and anyone interested in the rapidly growing field of artificial intelligence and creativity. (shrink)

This volume provides a balanced set of reviews which introduce the central topics in the philosophy of time. This is the first introductory anthology on the subject to appear for many years; the contributors are distinguished, and two of the essays are specially written for this collection. In their introduction, the editors summarize the background to the debate, and show the relevance of issues in the philosophy of time for other branches of philosophy and for science. Contributors include J.M.E. McTaggart, (...) Arthur N. Prior, D.H. Mellor, Sydney Shoemaker, Graeme Forbes, Lawrence Sklar, Michael Dummett, David Lewis, W.H. Newton-Smith, and Anthony Quinton. (shrink)

Comment les objets matériels persistent-ils à travers le temps ? Qu'est-ce que cela veut dire qu'un objet change tout en étant un et le même ? Peut-il y avoir un monde sans temps ? Le temps s'écoule-t-il même si rien ne change ? Et, le temps lui-même, qu'est-ce que c'est ? Consiste-t-il seulement en l'instant présent, ou le passé et le futur existent-ils également ? Est-il possible de voyager dans le temps ? Quelles propriétés le temps doit-il avoir pour permettre (...) le voyage dans le temps ? Est-il possible de changer le passé ? Ce volume recueille des traductions inédites de textes issus de la philosophie du temps des XXe et XXIe siècles. Ces contributions de R. M. Adams, Jiri Benovsky, David Braddon-Mitchell, Michael Dummett, Graeme Forbes, Mark Heller, Paul Horwich, Robin Le Poidevin, David Lewis, D. H. Mellor, Sydney Shoemaker, Theodore Sider, J. J. C. Smart, W. V. O. Quine, et Peter Van Inwagen offrent des manières différentes de réagir à ces interrogations (et bien d'autres encore). Elles permettent ainsi au lecteur de découvrir la richesse des débats contemporains en philosophie du temps. On découvre ici une variété de notions, d'arguments et de théories, telles que l'endurantisme, le perdurantisme, le relationnisme et le substantialisme, mais également d'importantes considérations en ce qui concerne la causalité, l'identité, le changement, ou encore l'analyse de similarités entre le temps et l'espace. Le problème du voyage dans le temps se voit consacrer une section spéciale dans ce volume, car il a ceci de particulièrement intéressant : il sert de cas limite offrant la possibilité de tester les théories et de soulever de nombreuses questions philosophiques sur la nature du temps et du monde. (shrink)

[Sydney Shoemaker] A major objection to the view that the relation of persons to human animals is coincidence rather than identity is that on this view the human animal will share the coincident person's physical properties, and so should share its mental properties. But while the same physical predicates are true of the person and the human animal, the difference in the persistence conditions of these entities implies that there will be a difference in the properties ascribed by these (...) predicates, with the result that the physical properties that determine the person's mental states will belong to the person and not to the human animal. /// [Galen Strawson] What are the grounds of self-consciousness? I consider 29 proposals and reject 22, including a number of proposals that experience of body is necessary for self-consciousness. A popular strategy in debates of this sort is to argue that one cannot be said to have some concept C unless one has a need or a use for C given the character of one's experience considered independently of the character that it has given that one possesses C. I suggest that such arguments are invalid. (shrink)

A major objection to the view that the relation of persons to human animals is coincidence rather than identity is that on this view the human animal will share the coincident person's physical properties, and so should (contrary to the view) share its mental properties. But while the same physical predicates are true of the person and the human animal, the difference in the persistence conditions of these entities implies that there will be a difference in the properties ascribed by (...) these predicates, with the result that the physical properties that determine the person's mental states will belong to the person and not to the human animal. (shrink)

Analytic philosophy has recently demonstrated a revived interest in metaphysical problems about possibility and necessity. Graeme Forbes here provides a careful description of the logical background of recent work in this area for those who may be unfamiliar with it, moving on to d discuss the distinction between modality de re and modality de dicto and the ontological commitments of possible worlds semantics. In addition, Forbes offers a unified theory of the essential properties of sets, organisms, artefacts, substances, and (...) events, based on the doctrine that identity facts must be intrinsically grounded, and analyzes and rejects apparent counterexamples to this doctrine. (shrink)

Although Responsible Conduct of Research training is common in the sciences, the effectiveness of RCR training is open to question. Three key factors appear to be particularly important in ensuring the effectiveness of ethics education programs: educational efforts should be tied to day-to-day practices in the field, educational efforts should provide strategies for working through the ethical problems people are likely to encounter in day-to-day practice, and educational efforts should be embedded in a broader program of on-going career development efforts. (...) This article discusses a complex qualitative approach to RCR training development, based on a sensemaking model, which strives to address the afore-mentioned training concerns. Ethnographic observations and prior RCR training served the purpose of collecting information specific to a multi-disciplinary and multi-university research center with the goal of identifying metacognitive reasoning strategies that would facilitate ethical decision-making. The extensive qualitative analyses resulted in the identification of nine metacognitive reasoning strategies on which future RCR training will be developed. The implications of the findings for RCR training in the sciences are discussed. (shrink)

[Sydney Shoemaker] A major objection to the view that the relation of persons to human animals is coincidence rather than identity is that on this view the human animal will share the coincident person's physical properties, and so should (contrary to the view) share its mental properties. But while the same physical predicates are true of the person and the human animal, the difference in the persistence conditions of these entities implies that there will be a difference in the (...) properties ascribed by these predicates, with the result that the physical properties that determine the person's mental states will belong to the person and not to the human animal. /// [Galen Strawson] What are the grounds of self-consciousness? I consider 29 proposals and reject 22, including a number of proposals that experience of body (or bodies) is necessary for self-consciousness. A popular strategy in debates of this sort is to argue that one cannot be said to have some concept C (e.g. the concept ONESELF, necessary for self-consciousness) unless one has a need or a use for C given the character of one's experience considered independently of the character that it has given that one possesses C. I suggest that such arguments are invalid. (shrink)

In this particularly well written volume Graeme Hirst presents a theoretically motivated foundation for semantic interpretation (conceptual analysis) by computer, and shows how this framework facilitates the resolution of both lexical and syntactic ambiguities.

Dr Sydney Brenner has played a major, and unique, role in biology during the past 40 years. His contributions have ranged from key work on the structure of the genetic code and the existence of mRNA through the development of Caenorhabditis elegans as a key model system in developmental biology to genomic analysis and function in vertebrates. BioEssays went to interview Dr Brenner at his home in the cathedral city of Ely, England, on the significance of the genome projects (...) for human biology, in particular, and for biology, in general. (shrink)

From Detroit Red to El-Hajj Malik El-Shabazz, the man best known as Malcolm X restlessly redefined himself throughout a controversial life. His transformations have appeared repeatedly in books, photographs, paintings, and films, while his murder set in motion a series of tugs-of-war among journalists, biographers, artists, and his ideological champions over the interpretation of his cultural meaning. This book marks the first systematic examination of the images generated by this iconic cultural figure--images readily found on everything from T-shirts and hip-hop (...) album covers to coffee mugs. Graeme Abernethy captures both the multiplicity and global import of a person who has been framed as both villain and hero, cast by mainstream media during his lifetime as "the most feared man in American history," and elevated at his death as a heroic emblem of African American identity. As Abernethy shows, the resulting iconography of Malcolm X has shifted as profoundly as the American racial landscape itself. Abernethy explores Malcolm's visual prominence in the eras of civil rights, Black Power, and hip-hop. He analyzes this enigmatic figure's representation across a variety of media from 1960s magazines to urban murals, tracking the evolution of Malcolm's iconography from his autobiography and its radical milieu through the appearance of Spike Lee's 1992 biopic and beyond. Its remarkable gallery of illustrations includes reproductions of iconic photographs by Richard Avedon, Eve Arnold, Gordon Parks, Henri Cartier-Bresson, and John Launois. Abernethy reveals that Malcolm X himself was keenly aware of the power of imagery to redefine identity and worked tirelessly to shape how he was represented to the public. His theoretical grasp of what he termed "the science of imagery" enabled him both to analyze the role of representation in ideological control as well as to exploit his own image in the interests of black empowerment. This provocative work marks a startling shift from the biographical focus that has dominated Malcolm X studies, providing an up-to-date--and comprehensively illustrated--account of Malcolm's cultural afterlife, and addressing his iconography in relation to images of other major African American figures, including Martin Luther King, Jr., Angela Davis, Kanye West, and Barack Obama. Analyzing the competing interpretations behind so many images, Abernethy reveals what our lasting obsession with Malcolm X says about American culture over the last five decades. (shrink)

[Graeme Forbes] In I, I summarize the semantics for the relational/notional distinction for intensional transitives developed in Forbes (2000b). In II-V I pursue issues about logical consequence which were either unsatisfactorily dealt with in that paper or, more often, not raised at all. I argue that weakening inferences, such as 'Perseus seeks a mortal gorgon, therefore Perseus seeks a gorgon', are valid, but that disjunction inferences, such as 'Perseus seeks a mortal gorgon, therefore Perseus seeks a mortal gorgon or (...) an immortal gorgon', are invalid. Since 'a gorgon' and 'a mortal gorgon or an immortal gorgon' are extensionally and intensionally the same quantifier, it is not completely trivial to arrange the semantics of intensional transitives so that this classification of the inferences is obtained. (This paper is an abridged version of Forbes (2001a); the latter will be incorporated into a forthcoming monograph, Attitude Problems.) /// [Jennifer Saul] This paper discusses the question of which verbs are intensional transitives. In particular, I ask which verbs Forbes should take to be intensional transitives. I argue that it is very difficult to arrive at a clear and plausible understanding of what an intensional transitive is-making it difficult to answer these questions. I end by briefly raising some questions about the usefulness of the category of intensional transitives. (shrink)

A verb is transitive iff it usually occurs with a direct object, and in such occurrences it is said to occur transitively . Thus ‘ate’ occurs transitively in ‘I ate the meat and left the vegetables’, but not in ‘I ate then left’ (perhaps it is not the same verb ‘left’ in these two examples, but it seems to be the same ‘ate’). A verb is intensional if the verb phrase (VP) it forms with its complement is anomalous in at (...) least one of three ways: (i) interchanging expressions in the complement referring to the same entity can change the truth-value of the sentence embedding the VP; (ii) the VP admits of a special “unspecific” reading if it contains a quantifier, or a certain type of quantifier; and (iii) the normal existential commitments of names and existential quantifiers in the complement are suspended even when the embedding sentence is negation-free. (shrink)

The talk is called ‘The QUANTUM COMPLEXITY behind Quantum Reality’. It is divided into 3 parts: an outline of the essentials of quantum theory, a discussion of some glaring problems of interpretation, and my shocking philosophical conclusions.

We analyse aspects of the Big Bang program in modern cosmology, with special focus on the strategies employed by its adherents both in defending the theory against anomalous data and in dismissing rival accounts. We illustrate this by critically examining four aspects of Big Bang cosmology: the interpretation of the cosmic red-shift, the explanation of the cosmic background radiation, the inflation hypothesis and the search for dark matter. We conclude that the Big Bang's dominance of contemporary cosmology is not justified (...) by the degree of experimental support it receives relative to rival theories. (shrink)

The phenomenon of the New Genetics raises complex social problems, particularly those of privacy. This book offers ethical and legal perspectives on the questions of a right to know and not to know genetic information from the standpoint of individuals, their relatives, employers, insurers and the state. Graeme Laurie provides a unique definition of privacy, including a concept of property rights in the person, and argues for stronger legal protection of privacy in the shadow of developments in human genetics. (...) He challenges the role and the limits of established principles in medical law and ethics, including respect for patient autonomy and confidentiality. This book will interest lawyers, philosophers and doctors concerned both with genetic information and issues of privacy; it will also interest genetic counsellors, researchers, and policy makers worldwide for its practical stance on dilemmas in modern genetic medicine. (shrink)