A great deal of philosophy of mind in the modern era has been driven by an intense aversion to Cartesian dualism. In the 1950s, materialists claimed to have succeeded once and for all in exorcising the Cartesian ghost by identifying the mind with the brain. In subsequent decades, cognitive science put scientific meat on this metaphysical skeleton by explicating mental processes as digital computation implemented in the brain's hardware.

The first comprehensive presentation of the dynamical approach to cognition. It contains a representative sampling of original, current research on topics such as perception, motor control, speech and language, decision making, and development.

According to the dominant computational approach in cognitive science, cognitive agents are digital computers; according to the alternative approach, they are dynamical systems. This target article attempts to articulate and support the dynamical hypothesis. The dynamical hypothesis has two major components: the nature hypothesis (cognitive agents are dynamical systems) and the knowledge hypothesis (cognitive agents can be understood dynamically). A wide range of objections to this hypothesis can be rebutted. The conclusion is that cognitive systems may well be dynamical systems, (...) and only sustained empirical research in cognitive science will determine the extent to which that is true. (shrink)

In 1988 Fodor and Pylyshyn issued a challenge to the newly-popular connectionism: explain the systematicity of cognition without merely implementing a so-called classical architecture. Since that time quite a number of connectionist models have been put forward, either by their designers or by others, as in some measure demonstrating that the challenge can be met (e.g., Pollack, 1988, 1990; Smolensky, 1990; Chalmers, 1990; Niklasson and Sharkey, 1992; Brousse, 1993). Unfortu- nately, it has generally been unclear whether these models actually do (...) have this implication (see, for instance, the extensive philosophical debate in Smolensky, 1988; Fodor and McLaughlin, 1990; van Gelder, 1990, 1991; McLaughlin, 1993a, 1993b; Clark, 1993). Indeed, we know of no major supporter of classical orthodoxy who has felt compelled, by connectionist models and argu- ments, to concede in print that connectionists have in fact delivered a non-classical explanation of systematicity. (shrink)

b> Critical thinking is highly valued but difficult to teach effectively. The Reason! project at the University of Melbourne has developed the Reason!Able software as part of a general method aimed at enhancing critical thinking skills. Students using Reason!Able appear to make dramatic gains. This paper describes the challenge involved, the theoretical basis of the Reason! project, the Reason!Able software, and results of intensive evaluation of the Reason! approach.

systematicity is. Until systematicity is adequately systematicity. Most contributors to these debates have clarified, we cannot know whether classical paid little or no attention to the alleged empirical.

When the various disciplines participating in cognitive science are listed, philosophy almost always gets a guernsey. Yet, a couple of years ago at the conference of the Cognitive Science Society in Boulder (USA), there was no philosophy or philosopher with any prominence on the program. When queried on this point, the organizer (one of the "superstars" of the field) claimed it was partly an accident, but partly also due to an impression among members of the committee that philosophy is basically (...) a waste of time. Philosophy, they thought, is mostly obscure bullshit that does little to help, and much to hinder, real progress in cognitive science. (shrink)

The goal of the Reason! project is to develop an effective and affordable method for improving informal reasoning. In this paper we sketch the background to the project, briefly describe the Reason! software, and report positive results from a detailed study of the first full-scale trial.

People generally develop some degree of competence in general informal reasoning and argument skills, but how do they go beyond this to attain higher expertise? Ericsson has proposed that high-level expertise in a variety of domains is cultivated through a specific type of practice, referred to as ‘deliberate practice’. Applying this framework yields the empirical hypothesis that high-level expertise in informal reasoning is the outcome of extensive deliberate practice. This paper reports results from two studies evaluating the hypothesis. University student (...) participants completed 12 weeks of deliberate practice in informal reasoning. Quantity of practice was recorded by computer, and additionally assessed via self report. The hypothesis was supported: students in both studies showed a large improvement, and practice as measured by computer, was related to amount of improvement in informal reasoning. These findings support adopting a deliberate practice approach when attempting to teach or learn expertise in informal reasoning. (shrink)

Department of Computer Science Philosophy Program, Research School of Social Sciences University of Skövde, S-54128, SWEDEN Australian National University, Canberra ACT 0200.

been to define various notions of distribution in terms of represented by one and the same distributed pattern (Mur- structures of correspondence between the represented items dock 1979). For example, it is standard in feedforward and the representational resources (e.g., van Gelder 1992). connectionist networks for one and the same set of synap- This approach may be misguided; the essence of this alter- tic weights to represent many associations between input native category of representation might be some other prop- (...) and output. erty entirely. For example, Haugeland (1991) has suggested • Equipotentiality In some cases, an item is represented by. (shrink)

1. Consider the basic outlines of the mind-body debate as it is found in contemporary Anglo-American analytic philosophy. The central question is “whether mental phenomena are physical phenomena, and if not, how they relate to physical phenomena.”1 Over the centuries, a wide range of possible solutions to this problem have emerged. These are the various “isms” familiar to any student of the debate: Cartesian dualism, idealism, epiphenomenalism, central state materialism, non- reductive physicalism, anomalous monism, and so forth. Each purports to (...) specify, among other things, the metaphysical relationship between the mental and the physical. They do so by specifying whether, or in what way, mental entities are identical to, reducible to, realized by, supervenient upon, or in causal interaction with physical entities. Thus, a convenient way to survey the range of positions is to enter them in a table. Rows correspond to the major kinds of metaphysical relation which might obtain between mental and physical entities. Each columns corresponds to one of the generic positions available in the debate. The particular theories defended by individual philosophers are usually just specific versions of generic positions. Thus Malebranche’s occasionalism is a version of causal dualism, distinguished by a peculiar account of the way in which causal interaction between mental and physical is actually effected. The central philosophical challenge is to determine which of these positions correctly describes the mental/physical relationship. Positions are evaluated for internal consistency, their fit with “intuitions,” their compatibility with scientific developments, and so forth. The mind-body debate, in this simple form, is set out in any number of. (shrink)

A couple of years ago I set a mundane homework assignment for my class of about 50 mid-level Arts students. They were to take one of the course readings - a chapter from How the Mind Works by Steven Pinker - and return in a week with a one page essay, in which they had identified and evaluated the author's main argument.

Cognitive science has always been dominated by the idea that cognition is _computational _in a rather strong and clear sense. Within the mainstream approach, cognitive agents are taken to be what are variously known as _physical symbol_ _systems, digital computers_, _syntactic engines_, or_ symbol manipulators_. Cognitive operations are taken to consist in the shuffling of symbol tokens according to strict rules (programs). Models of cognition are themselves digital computers, implemented on general purpose electronic machines. The basic mathematical framework for understanding (...) cognition is the theory of discrete computation, and the core theoretical tools for developing and understanding models of cognition are those of computer science. (shrink)

Paper presented at Cognition, Evolution and Rationality: Cognitive Science for the 21st Century. Oporto, September 2002. To appear in a volume based on that conference edited by Antonio Jose Teiga Zilhao.

“There is a familiar trio of reactions by scientists to a purportedly radical hypothesis: (a) “You must be our of your mind!”, (b) “What else is new? Everybody knows _that_!”, and, later—if the hypothesis is still standing—(c) “Hmm. You _might _be on to something!” ((Dennett, 1995) p. 283).

There are many conflicting views concerning the nature of distributed representation, its compatibility or otherwise with symbolic representation, and its importance in characterizing the nature of connectionist models and their relationship to more traditional symbolic approaches to understanding cognition. Many have simply assumed that distribution is merely an implementation issue, and that symbolic mechanisms can be designed to take advantage of the virtues of distribution if so desired. Others, meanwhile, see the use of distributed representation as marking a fundamental difference (...) between the two approaches. One reason for this diversity of opinion is the fact that the relevant notions - especially that of. (shrink)

Lachman claims that the Dynamical Hypothesis (DH) is “untenable.” His own position is a version of the “The DH is epistemological, not ontological,” objection to the target article, which is dealt with in section R2.3 of my original response (van Gelder 1998r). Additional objections are that the coverage of the hypothesis is “vast” and that the DH presupposes we have reached the end point of scientific theorizing. Indeed, the DH is very broad, but it does not presuppose that science (...) has ended; that's why we call it a “hypothesis.”. (shrink)

The nature of the dynamical hypothesis in cognitive science (the DH) is further clarified in responding to various criticisms and objections raised in commentaries. Major topics addressed include the definitions of “dynamical system” and “digital computer;” the DH as Law of Qualitative Structure; the DH as an ontological claim; the multiple-realizability of dynamical models; the level at which the DH is pitched; the nature of dynamics; the role of representations in dynamical cognitive science; the falsifiability of the DH; the extent (...) to which the DH is open; the role of temporal and implementation considerations; and the novelty or importance of the DH. The basic formulation and defense of the DH in the target article survives intact, though some refinements are recommended. (shrink)

A defense of the Dynamical Hypothesis against the charge that one of its major supports, the argument from time, is rotten.

A Neurocomputational Perspective , it comes of age as philosophy of mind as well. This book demands to be read by connectionists who wish to understand the philosophical context and ramifications of their work, and by philosophers who wish to understand connectionism and the nature of mind more generally.

Digital computers play a special role in cognitive science—they may actually be instances of the phenomenon they are being used to model. This paper surveys some of the main issues involved in understanding the relationship between digital computers and cognition. It sketches the role of digital computers within orthodox computational cognitive science, in the light of a recently emerging alternative approach based around dynamical systems.

Critical thinking (CT) is one of education's most valued graduated, guided, scaffolded, and there should be lots of outcomes, but it is also very difficult to achieve. A recent..

Paper presented at Cognition, Evolution and Rationality: Cognitive Science for the 21st Century. Oporto, September 2002. To appear in a volume based on that conference edited by Antonio Jose Teiga Zilhao.

One of the classic papers of Australian feminist philosophy is G. Lloyd's "The Man of Reason" (Lloyd, 1979). The main concern of this paper is the alleged maleness of the Man of Reason, i.e., the thesis that our philosophical tradition in some deep way associates the concepts rational and male. Lloyd claims that her main goal is to bring this "undoubted" thesis "into clearer focus" (p.18), and indeed she makes no strenuous effort to demonstrate that the to-be-clarified thesis is actually (...) true. There are however a few places where she advances material she seems to be taking as some kind of evidence that the Man of Reason is male. One is on the second page, where she quotes from Augustine: And finally we see man, made in your image and likeness, ruling over all the irrational animals for the very reason that he was made in your image and resembles you, that is because he has the power of reason and understanding. And just as in man's soul there are two forces; on which is dominant because it deliberates and one which obeys because it is subject to such guidance, in the same way in the physical sense, woman has been made for man. In her mind and her rational intelligence she has a nature the equal of man's, but in sex she is physically subject to him in the same way as our natural impulses need to be subjected to the reasoning power of the mind, in order that the actions to which they lead may be inspired by the principles of good conduct. Now an interesting feature of this passage is that it appears to directly contradict the thesis of the maleness of the Man of Reason. Far from saying that rationality is a male prerogative, Augustine claims that "in her mind and her rational intelligence she has a nature the equal of man's" (my emphasis). Certainly Augustine claims that in sex woman is subject to man, and he also claims that there is an analogy or parallel between the dominance of man over woman in sex and the dominance of the rational part of the mind over the natural impulses.. (shrink)

Argument mapping is a way of diagramming the logical structure of an argument to explicitly and concisely represent reasoning. The use of argument mapping in critical thinking instruction has increased dramatically in recent decades. This paper overviews the innovation and provides a procedural approach for new teaches wanting to use argument mapping in the classroom. A brief history of argument mapping is provided at the end of this paper.

Van Gelder's clear distinction between the quantitative nature of dynamical systems and the nonquantitative nature of computational processes provides a firm basis for distinguishing between processes that happen in time and processes that happen over time. Symbolic reasoning, the presumed basis of intelligent behavior in robots, happens over time. However, the movements and actions that robots must make to behave intelligently, happen in time. Attempting to connect the two, as classical artificial intelligence and robotics have presumed to be necessary, (...) has produced a tension and an arbitrarily moving interface in the construction of robots. Adopting a robotic version of the dynamical hypothesis offers sound theoretical and scientific justification for those robotics researchers who continue to insist that getting the interaction dynamics of intelligent behavior right is a purely dynamical matter, and never a symbolic computational one. (shrink)

Tim van Gelder, following Brandom, Collins and others, uses the so‐called wide content of capacities which support social, norm governed activities, such as language, to argue for their anti‐natural, abstract, but socially instituted nature and thence for the failure of the entire traditional mind‐body discussion as ill‐posed. We argue that his former conclusion is wrong, that such properties are naturalisable, complicated organisational properties of the complexly organised, non‐linearly interactive systems that human beings are. This analysis also provides principled support, (...) but on other grounds, for van Gelder’s latter conclusion. We outline a new naturalist approach to the organisational capacities of such systems that is intended to ground their biological, cognitive and social characters. (shrink)

Tim van Gelder, following Brandom, Collins and others, uses the so‐called wide content of capacities which support social, norm governed activities, such as language, to argue for their anti‐natural, abstract, but socially instituted nature and thence for the failure of the entire traditional mind‐body discussion as ill‐posed. We argue that his former conclusion is wrong, that such properties are naturalisable, complicated organisational properties of the complexly organised, non‐linearly interactive systems that human beings are. This analysis also provides principled support, (...) but on other grounds, for van Gelder’s latter conclusion. We outline a new naturalist approach to the organisational capacities of such systems that is intended to ground their biological, cognitive and social characters. (shrink)

Tim Bayne draws on philosophy, psychology, and neuroscience in defence of the claim that consciousness is unified. He develops an account of what it means to say that consciousness is unified, and then applies this account to a variety of cases - drawn from both normal and pathological forms of experience - in which the unity of consciousness is said to break down. He goes on to explore the implications of the unity of consciousness for theories of consciousness, for the (...) sense of embodiment, and for accounts of the self. The Unity of Consciousness draws on a wide range of findings within philosophy and the sciences of the mind to construct an account of the unity of consciousness that is both conceptually sophisticated and scientifically informed. (shrink)

This concise book introduces nonphysicists to the core philosophical issues surrounding the nature and structure of space and time, and is also an ideal resource for physicists interested in the conceptual foundations of space-time theory. Tim Maudlin's broad historical overview examines Aristotelian and Newtonian accounts of space and time, and traces how Galileo's conceptions of relativity and space-time led to Einstein's special and general theories of relativity. Maudlin explains special relativity using a geometrical approach, emphasizing intrinsic space-time structure rather than (...) coordinate systems or reference frames. He gives readers enough detail about special relativity to solve concrete physical problems while presenting general relativity in a more qualitative way, with an informative discussion of the geometrization of gravity, the bending of light, and black holes. Additional topics include the Twins Paradox, the physical aspects of the Lorentz-FitzGerald contraction, the constancy of the speed of light, time travel, the direction of time, and more.Introduces nonphysicists to the philosophical foundations of space-time theory Provides a broad historical overview, from Aristotle to Einstein Explains special relativity geometrically, emphasizing the intrinsic structure of space-time Covers the Twins Paradox, Galilean relativity, time travel, and more Requires only basic algebra and no formal knowledge of physics. (shrink)

Tim Button explores the relationship between words and world; between semantics and scepticism. -/- A certain kind of philosopher – the external realist – worries that appearances might be radically deceptive. For example, she allows that we might all be brains in vats, stimulated by an infernal machine. But anyone who entertains the possibility of radical deception must also entertain a further worry: that all of our thoughts are totally contentless. That worry is just incoherent. -/- We cannot, then, be (...) external realists, who worry about the possibility of radical deception. Equally, however, we cannot be internal realists, who reject all possibility of deception. We must position ourselves somewhere between internal realism and external realism, but we cannot hope to say exactly where. We must be realists, for what that is worth, and realists within limits. -/- In establishing these claims, The Limits of Realism critically explores and develops several themes from Hilary Putnam’s work: the model-theoretic arguments; the connection between truth and justification; the brain-in-vat argument; semantic externalism; and conceptual relativity. The book establishes the continued significance of these topics for all philosophers interested in mind, logic, language, or the possibility of metaphysics. (shrink)

When we discuss normative reasons, oughts, requirements of rationality, hypothetical imperatives (or “anankastic conditionals”), motivating reasons and so on, we often use verbs like “believe” and “want” to capture a relevant subject’s perspective. According to the received view about sentences involving these verbs, what they do is describe the subject’s mental states. Many puzzles concerning normative discourse have to do with the role that mental states consequently appear to play in this discourse. This book uses tools from formal semantics and (...) the philosophy of language to develop an alternative account of sentences involving these verbs. According to this view, which is called parentheticalism (in honour of J. O. Urmson), we very commonly use these verbs in a parenthetical sense. Used with this sense, these verbs themselves express backgrounded side-remarks on the contents they embed, and these latter, embedded contents constitute the at-issue contents of our utterances. This means that instead of speaking about the subject’s mental states, we often use sentences involving “believe” and “want” to speak about the world in a way that, in the conversational background, relates our utterances to her point of view. This idea is made precise, and it is used to solve various puzzles concerning normative discourse. The final result is a new, unified understanding of normative discourse, which gets by without postulating conceptual breaks between objective and subjective normative reasons, or normative reasons and rationality, or indeed between the reasons we ascribe to an agent and the reasons she herself can be expected to cite. Instead of being connected to either subjective mental states or objective facts, all of these normative statuses can be adequately articulated by citing worldly considerations from the subject’s point of view. (shrink)

Developments in the philosophy of mind over the last 20 years have dramatically changed the nature of the subject. In this major new introduction, Tim Bayne presents an outstanding overview of many of the key topics, problems, and debates, taking account not only of changes in philosophy of mind itself but also of important developments in the scientific study of the mind. -/- The following topics are discussed in depth: -/- What distinguishes a physicalist conception of the mind? -/- Behaviourism, (...) the identity theory, functionalism, and eliminativism as accounts of the mental -/- The nature of perception, including the issue of perceptual transparency, the admissible contents of perception, and the question of unconscious perception -/- The nature of thought, including the language of thought hypothesis, Searle’s Chinese room argument, and the Turing test -/- The basis of intentional content -/- Externalist accounts of content and the ‘extended mind’ thesis -/- Consciousness-based objections to physicalism, and illusionist and panpsychist conceptions of consciousness -/- Theories of consciousness, including methodological issues in the study of consciousness -/- Mental causation, including both philosophical and scientific challenges -/- The problem(s) of other minds, including knowledge of non-human minds -/- Self-knowledge -/- Personal identity and the nature of the self -/- The book features a number of boxes that provide a more in-depth look at particular issues. Also included are chapter summaries, guides to further reading, and a helpful glossary of terms. -/- Written by a leading figure in the field, Philosophy of Mind: An Introduction is an invaluable core text for any student coming to philosophy of mind for the first time. (shrink)

What new implications does the dynamical hypothesis have for cognitive science? The short answer is: None. The _Behavior and Brain Sciences _target article, “The dynamical hypothesis in cognitive science” by Tim Van Gelder is basically an attack on traditional symbolic AI and differs very little from prior connectionist criticisms of it. For the past ten years, the connectionist community has been well aware of the necessity of using (and understanding) dynamically evolving, recurrent network models of cognition.