One argument for reductive physicalism, the explanatory argument, rests on its ability to explain the vast and growing body of acknowledged psychophysical correlations. Jaegwon Kim has recently levelled four objections against the explanatory argument. I assess all of Kim's objections, showing that none is successful. The result is a defence of the explanatory argument for physicalism.

Functional reductionism concerning mental properties has recently been advocated by Jaegwon Kim in order to solve the problem of the 'causal exclusion' of the mental. Adopting a reductionist strategy first proposed by David Lewis, he regards psychological properties as being 'higher-order' properties functionally defined over 'lower-order' properties, which are causally efficacious. Though functional reductionism is compatible with the multiple realizability of psychological properties, it is blocked if psychological properties are subdivided or crosscut by neurophysiological properties. I argue that there is (...) recent evidence from cognitive neuroscience that shows that this is the case for the psychological property of fear. Though this may suggest that some psychological properties should be revised in order to conform to those of neurophysiology, the history of science demonstrates that this is not always the outcome, particularly with properties that play an important role in our folk theories and are central to human concerns. (shrink)

Many Christians who argue against Christian materialism direct their arguments against what I call ‘Type-I materialism’, the thesis that I cannot exist without my organic body. I distinguish Type-I materialism from Type-II materialism, which entails only that I cannot exist without some body that supports certain mental functions. I set out a version of Type-II materialism, and argue for its superiority to Type-I materialism in an age of science. Moreover, I show that Type-II materialism can accommodate Christian doctrines like the (...) Resurrection of the Body, the Incarnation, and the intermediate state (if there is one). (shrink)

The expression ‘nonreductive materialism’ refers to a variety of positions whose roots lie in attempts to solve the mind-body problem. Proponents of nonreductive materialism hold that the mental is ontologically part of the material world; yet, mental properties are causally efficacious without being reducible to physical properties.s After setting out a minimal schema for nonreductive materialism (NRM) as an ontological position, I’ll canvass some classical arguments in favor of (NRM).1 Then, I’ll discuss the major challenge facing any construal of (NRM): (...) the problem of mental causation, pressed by Jaegwon Kim. Finally, I’ll offer a new solution to the problem of mental causation. (shrink)

It has been argued that nonreductive physicalism leads to epiphenominalism about mental properties: the view that mental events cannot cause behavioral effects by virtue of their mental properties. Recently, attempts have been made to develop accounts of causal relevance for irreducible properties to show that mental properties need not be epiphenomenal. In this paper, I primarily discuss the account of Frank Jackson and Philip Pettit. I show how it can be developed to meet several obvious objections and to capture our (...) intuitive conception of degrees of causal relevance. However, I argue that the account requires large-scale miraculous coincidence for there to be causally relevant mental properties. I also argue that the same problem arises for two apparently very different accounts of causal relevance. I suggest that this result does not show that these accounts, on appropriate readings, are false. Therefore, I tentatively conclude that we have reason to believe that irreducible mental properties are causally irrelevant. Moreover, given that there is at leastprima facie evidence that mental properties can be causally relevant, my conclusion casts doubt on nonreductive physicalist theories of mental properties. (shrink)

Introduction — Reductive and Nonreductive Physicalism A Short Survey of Six Decades of Philosophical Discussion Including an Attempt to Formulate a Version ...

... PHILOSOPHY OF PSYCHOLOGY is the study of conceptual issues in psychology. For the most part, these issues fall equally well in psychology as in ...

A review of Andrew Melnyk's _A Physicalist Manifesto_ (Cambridge: CUP, 2003).

The article critically examines Jaegwon Kim’s book Physicalism, or Something Near Enough (Princeton: Princeton University Press, 2005). It recognizes the »near enough type of physicalism« involving functional reduction and covering the relational properties of qualia. Its intrinsic qualites are left out, but since it is qualia’s differences and similarities that matter, i.e. which affect our cognition and behaviour, this is, according to Kim, “no big loss”. While appreciating the book’s effort to offer an intelligible physicalistic theory of the world, the (...) paper concludes that it fails to do so. (shrink)

The paper works towards an account of explanatory integration in biology, using as a case study explanations of the evolutionary origin of novelties-a problem requiring the integration of several biological fields and approaches. In contrast to the idea that fields studying lower level phenomena are always more fundamental in explanations, I argue that the particular combination of disciplines and theoretical approaches needed to address a complex biological problem and which among them is explanatorily more fundamental varies with the problem pursued. (...) Solving a complex problem need not require theoretical unification or the stable synthesis of different biological fields, as items of knowledge from traditional disciplines can be related solely for the purposes of a specific problem. Apart from the development of genuine interfield theories, successful integration can be effected by smaller epistemic units (concepts, methods, explanations) being linked. Unification or integration is not an aim in itself, but needed for the aim of solving a particular scientific problem, where the problem's nature determines the kind of intellectual integration required. (shrink)

This paper identifies and critiques a theory of mental causation defended by some proponents of nonredutive physicalism that I call “intralevelism.” Intralevelist theories differ in their details. On all versions, the causal outcome of the manifestation of physical properties is physical and the causal outcome of the manifestation of mental properties is mental. Thus, mental causation on this view is intralevel mental to mental causation. This characterization of mental causation as intralevel is taken to insulate nonreductive physicalism from some objections (...) to nonreductive physicalism, including versions of the exclusion argument. This paper examines some features of three recent versions of intralevelism defended by John Gibbons, Markus Schlosser, and Amie Thomasson. This paper shows that the distinctive problems faced by these three representative versions of intralevelism suggest that the intralevelist strategy does not provide a viable solution to the exclusion problem. (shrink)

A metaphysics of the world described by contemporary science faces the problem of the relative ontological status of microphysical constituents (e.g. elementary particles), ultimate mathematical structures (e.g. of the Standard Model and General Relativity), and complex macroscopic systems with their arguably emergent properties. Justus Buchler's ordinal metaphysics, which provides a "view from anywhere" by analyzing whatever is under consideration through its location in an order of relationships, refusing to privilege any type of being, contributes a fresh perspective to this discussion. (...) While Buchler's metaphysics of natural complexes might seem too pluralistic to be compatible with physicalism—since the latter grants metaphysical priority to the physical and to science's claims about it—a physicalist account can be conceived inside his ordinal metaphysics. Like the Aristotelian "metaphysics of the middle," such an approach avoids both the Democritean metaphysics of Simples and the Platonist metaphysics of the Whole. In so doing it provides special resources for conceiving the status of wholes and components commonly disputed by reductionists and emergentists, e.g. complex material systems, organisms, and minds. Towards that end, this paper sketches the outlines of an ordinal physicalism. (shrink)

Throughout the 1990s, Jaegwon Kim developed a line of argument that what purport to be nonreductive forms of physicalism are ultimately untenable, since they cannot accommodate the causal efficacy of mental states. His argument has received a great deal of discussion, much of it critical. We believe that, while the argument needs some tweaking, its basic thrust is sound. In what follows, we will lay out our preferred version of the argument and highlight its essential dependence on a causal-powers metaphysic, (...) a dependence that Kim does not acknowledge in his official presentations of the argument.i We then discuss two recent physicalist strategies for preserving the causal efficacy of the mental in the face of this sort of challenge, strategies that (ostensibly) endorse a causal powers metaphysics of properties while offering distinctive accounts of the physical realization of mental properties. We argue that neither picture can be satisfactorily worked out, and that seeing why they fail strongly suggests that nonreductive physicalism and a causal powers metaphysic are not compatible, as our original argument contends. Since we also believe that robust realism concerning mental causation should not be abandoned, we take the argument of this paper to strongly motivate an account on which the mental is unrealized by and ontologically emergent from the physical. In a final section, we sketch what an ontologically emergentist account of the mental might look like. (shrink)

Nonreductive physicalism is currently one of the most widely held views about the world in general and about the status of the mental in particular. However, the view has recently faced a series of powerful criticisms from, among others, Jaegwon Kim. In several papers, Kim has argued that the nonreductivist's view of the mental is an unstable position, one harboring contradictions that push it either to reductivism or to eliminativism. The problems arise, Kim maintains, when we consider the causal powers (...) that mental properties are held to carry on the nonreductivist's view and the causal transactions into which mental events are said to enter. My aim here is less than that of defending nonreductive physicalism against all of Kim's criticisms. I wish primarily to call into question the claim that nonreductive physicalism is committed to emergentism with respect to the causal powers of the mental. As subsidiary points, I shall offer a limited defense of nonreductivism against two related objections that Kim raises. However, even if my conclusions are correct, problems remain for the nonreductivist's treatment of mental causation. I shall close the paper with a brief discussion of these difficulties. (shrink)

Knowing only what is empirically knowable can't by itself entail knowledge of what consciousness "is like." But if dualism is to be avoided, the question arises: how can a process be completely empirically unobservable when all of its components are completely observable? The recently emerging theory of self-organization offers resources with which to resolve this problem: Consciousness can be an empirically unobservable process because the emotions motivating attention are experienced only from the perspective of the one whose phenomenal states are (...) executed by the self-organizing processes which themselves constitute the consciousness. I argue that a self-organizing process can differ from the sum of its (empirically observable) substrata because, rather than just being realized by them, it actively rearranges the background conditions under which alternative component causal sequences can realize the self-organizing pattern into the future. (shrink)

By quantifying over properties we cannot create new properties any more than by quantifying over individuals we can create new individuals. Someone murdered Jones, and the murderer is either Smith or Jones or Wang. That “someone”, who murdered Jones, is not a person in addition to Smith, Jones, and Wang, and it would be absurd to posit a disjunctive person, Smith-or-Jones-or-Wang, with whom to identify the murderer. The same goes for second-order properties and their realizers. (Kim (1997a), p.201).

Abtract: This article argues that the debate between reductive and nonreductive physicalists is best characterized as a disagreement about which properties are natural. Among other things, natural properties are those that characterize the world completely. All physicalists accept the “completeness of physics,” but this claim contains a subtle ambiguity, which results in two conceptions of natural properties. Reductive physicalists should assert, while nonreductive physicalists should deny, that a single set of low-level physical properties is natural in both of these senses. (...) This way of drawing the distinction succeeds where previous approaches have failed and illuminates why the debate about reductionism is important. (shrink)

This volume presents a collection of new, specially written essays by a diverse group of philosophers, including Donald Davidson, Ted Honderich, and Philip Pettit, each of whom is widely known for defending a particular conception of minds and their place in nature.

Kim maintains that a physicalist has only two genuine options, eliminativism and reductionism. But physicalists can reject both by using the Strict Implication thesis (SI). Discussing his arguments will help to show what useful work SI can do.(1) His discussion of anomalous monism depends on an unexamined assumption to the effect that SI is false.

This paper characterizes a form of materialism which is strongly anti?reductionist with regard to mental predicates. It argues against the functionalist views of writers such as Brian Loar on the basis that the counterfactual interdependencies of intentional states are governed by constraints of rationality embodied in semantic links which cannot be captured in non?intentional, functionalist terms. However, contrary to what is commonly supposed, such anti?reductionism requires neither instrumentalism about the mental nor opposition to a causal explanatory view of intentional explanation. (...) The paper therefore aims to show that a realist causal explanatory view of psychological states is compatible with a non?reductive materialism (a position excluded by Brian Loar in his recent book Mind and Meaning). (shrink)

Recent worries about possible epiphenomenalist consequences of nonreductive materialism are misplaced, not, as many have argued, because nonreductive materialism does not have epiphenomenalist implications but because the epiphenomenalist implications are actually virtues of the theory, rather than vices. It is only by showing how certain kinds of mental properties are causally impotent that cognitive scientific explanations of mentality as we know them are possible.

In this paper I examine nonreductive materialism (physicalism). This is a position that Terry Horgan favors in his papers and is probably the most widely accepted position in the philosophy of mind in recent decades. In contrast to this, I will argue that nonreductive materialism is an unstable position and will suggest that we can show this using Horgan's own work on the concept of superdupervenience.

The aim of this paper is to show that Kim’s ‚supervenience argument’ is at best inconclusive and so fails to provide an adequate challenge to nonreductive physicalism. I shall argue, first, that Kim’s argument rests on assumptions that the nonreductive physicalist is entitled to regard as question-begging; second, that even if those assumptions are granted, it is not clear that irreducible mental causes fail to␣satisfy them; and, third, that since the argument has the overall structure of a reductio, which of (...) its various premises one performs the reductio on remains open to debate in an interesting way. I shall finally suggest that the issue of reductive vs. nonreductive physicalism is best contested not in the arena of mental causation but in that in which the issues pertaining to theory and property reduction are currently being debated. (shrink)

Jaegwon Kim and others have claimed that (strong) psychophysical supervenience entails the reducibility of mental properties to physical properties. I argue that this claim is unwarranted with respect to epistemic (explanatory) reducibility (either of a global or of a local sort), as well as with respect to ontological reducibility. I then attempt to show that a robust version of nonreductive materialism (which I call supervenient token-physicalism) can be defended against the charge that nonreductive materialism leads to epiphenomenalism in failing to (...) account for the causal or explanatory relevance of mental properties. (shrink)

In order to solve the problem of the monstrous acts that an all-powerful, all-knowing God would daily be performing, we need to sever the God of Power from the God of Value. The former is the underlying dynamic unity in the physical universe, eternal, omnipresent, all-powerful, but an It, and thus not capable of knowing what It does. It can be forgiven the terrible things It does. The latter is what is of most value associated with our human world - (...) or the world of sentient life more generally. Having performed this surgical operation on God, the problem then becomes: How can we put the two halves of God together again? How can our human world, imbued with experiential qualities, consciousness, free will meaning and value, exist and best flourish, embedded as it is in the physical universe? This is our fundamental problem - philosophical, intellectual and practical. It is our fundamental religious problem. (shrink)

My aim in this paper is to defend a version of the brain process theory, or identity thesis, which differs in one important respect from the theory put forward by J.J.C. Smart. I shall argue that although the sensations which a person experiences are, as a matter of contingent fact, brain processes, nonetheless there are facts about sensations which cannot be described or understood in terms of any physical theory. These 'mental' facts cannot be described by physics for the simple (...) reason that physical descriptions are designed specifically to avoid mentioning such facts. Thus in giving a physical explanation of a sensation we necessarily describe and render intelligible that sensation only as a physical process, and not also as a sensation. If we are to describe and render intelligible a person's sensations, or inner experiences, as sensations, and not as physical processes occurring in that person's brain, then we must employ a kind of description that connot be derived from any set of physical statements. (shrink)

Can physicalism (or materialism) be non-reductive? I provide an opinionated survey of the debate on this question. I suggest that attempts to formulate non-reductive physicalism by appeal to claims of event identity, supervenience, or realization have produced doctrines that fail either to be physicalist or to be non-reductive. Then I treat in more detail a recent attempt to formulate non-reductive physicalism by Derk Pereboom, but argue that it fares no better.

I argue that a certain version of physicalism, which is viewed by both its admirers and its detractors as non-reductionist, in fact entails two claims which, though not reductionist in the currently most popular sense of 'reductionist', conform to the spirit of reductionism sufficiently closely to compromise its claim to be a comprehensively non-reductionist version of physicalism. Putatively non-reductionist versions of physicalism in general, I suggest, are likely to be non-reductionist only in some senses, but not in others, and hence (...) to disappoint those who wish to be physicalists but still to remain soft and cuddly non-reductionists. (shrink)

In Unsimple Truths, Sandra Mitchell argues that the long-standing scientific and philosophical deference to reductive explanations founded on simple universal ...

Recently, Clifford Williams has attempted to argue for the plausibility of a Christian form of physicalism. To make his case, Williams appropriates certain claims by John Locke regarding the possibility of thinking matter to argue for what Williams calls the parity theses: (1) God can make matter and nonmatter either to think or not to think. Given God's omnipotence, the justification for (1) is: (2) there is no contradiction in asserting either that matter or nonmatter thinks or that they do (...) not think. If we expand thinking to include other morally and religiously relevant operations of the mind, then we get: (3) God can make either a purely material being or a nonmaterial entity to have moral and religious characteristics. From this, Williams infers that: (4) there is an equal amount of mystery in thinking matter as there is in non-thinking matter. In response to Williams, I argue that his main arguments for the parity theses fail and his Lockean style argument must be judged a failure. To show this I, first, state Williams' Lockean parity argument and, second, criticize the three arguments he offers for its most important premise. (shrink)

During the 'sixties and 'seventies, Hilary Putnam, Jerry Fodor, and Richard Boyd, among others, developed a type of materialism that eschews reductionist claims.¹ In this view, explana- tions, natural kinds, and properties in psychology do not reduce to counterparts in more basic sciences, such as neurophysiology or physics. Nevertheless, all token psychological entities-- states, processes, and faculties--are wholly constituted of physical entities, ultimately out of entities over which microphysics quantifies. This view quickly became the standard position in philosophy of mind, (...) and reductionism fell out of favor. Recently, however, reductionism has been experiencing a rebirth, and many have suggested that the non-reductive approach was accepted too quickly and too uncritically. In this paper, we attempt to provide a more thorough account of the anti-reductionist position, and, in the process, to defend it against its recent critics. (shrink)

The most fundamental issue of the neurosciences is the question of how or whether the mind and the body can interact with each other. It has recently been suggested in several studies that current neuroimaging evidence supports a view where the mind can have a well-documented causal influence on various brain processes. These arguments are critically analyzed here. First, the metaphysical commitments of the current neurosciences are reviewed. According to both the philosophical and neuroscientific received views, mental states are necessarily (...) neurally based. It is argued that this leaves no room for a genuine interaction of the mental and the neural. Second, it is shown how conclusions drawn from recent imaging studies are in fact compatible with the fully physicalistic notion of mental causation and how they can thus be easily accommodated to the received view. The fallacious conclusions are argued to be a result of an overly vague grasping of the conceptual issues involved. The question of whether the fundamental physical principles exclude outright the ability of mental states to have causal influence on the physical world is also addressed and the reaction of appealing to the apparent loophole provided by quantum physics is assessed. It is argued that linking psychology to quantum physics contradicts many basic tenets of the current neurosciences and is thus not a promising line of study. It is concluded that the interactionist hypothesis benefits from neither conceptual nor empirical support. (shrink)

Jaegwon Kim’s exclusion argument is a general ontological argument, applicable to any properties deemed supervenient on a microproperty basis, including biological properties. It implies that the causal power of any higher-level property must be reducible to the subset of the causal powers of its lower-level properties. Moreover, as Kim’s recent version of the argument indicates, a higher-level property can be causally efficient only to the extent of the efficiency of its micro-basis. In response, I argue that the ontology that aims (...) to capture experimentally based explanations of metabolic control systems and morphogenetic systems must involve causally relevant contextual properties. Such an ontology challenges the exclusiveness of micro-based causal efficiency that grounds Kim’s reductionism, since configurations themselves are inherently causally efficient constituents. I anticipate and respond to the reductionist’s objection that the nonreductionist ontology’s account of causes and inter-level causal relations is incoherent. I also argue that such an ontology is not open to Kim’s overdetermination objection. (shrink)

Some causal explanations are non-committal in that mention of a property in the explanans conveys information about the causal origin of the explanandum even if the property in question plays no causal role for the explanandum . Programme explanations are a variety of non-committal causal (NCC) explanations. Yet their interest is very limited since, as I will argue in this paper, their range of applicability is in fact quite narrow. However there is at least another variety of NCC explanations, causal (...) orientation explanations, which offer a plausible model for many explanations in the special sciences. (shrink)

In a series of influential articles (Kim 1989b, 1992b, 1993a and 1998), Jaegwon Kim has developed a strong argument against nonreductive physicalism as a plausible solution to mental causation. The argument is commonly called the ’causal exclusion argument’, and it has become, over the years, one of the most serious threats to the nonreductivist point of view. In the first part of this paper I offer a careful reconstruction and detailed discussion of the exclusion argument. In the second part I (...) show why some important objections to it actually fail. (shrink)

Most philosophers of mind nowadays espouse two metaphysical views: Nonreductive Physicalism and the causal efficacy of the mental. Throughout this work I will refer to the conjunction of both claims as the Causal Autonomy of the Mental. Nevertheless, this position is threatened by a number of difficulties which are far more serious than one would imagine given the broad consensus that it has generated during the last decades. This paper purports to offer a careful examination of some of these difficulties (...) and show the considerable efforts that one has to undertake in order to try to overcome them. The difficulties examined will concern only metaphysical problems common to all special science properties but not specific of mental properties. So, in proposing a functionalist version of Nonreductive Physicalism in what follows, I will not attempt to answer to well known objections such as the absent qualia argument and the like. This should not be interpreted as a limitation! in the scope of this work. On the contrary, in dealing with more general objections we will try to evaluate a position which entails (under common assumptions) the Causal Autonomy of the Mental, namely: Nonreductive Physicalism plus the causal efficacy of special science properties. (shrink)

An analysis and rebuttal of Jaegwon Kim's reasons for taking nonreductive physicalism to entail the causal irrelevance of mental features to physical phenomena, particularly the behaviour of human bodies.

Physicalism and antireductionism are the ruling orthodoxy in the philosophy of biology. But these two theses are difficult to reconcile. Merely embracing an epistemic antireductionism will not suffice, as both reductionists and antireductionists accept that given our cognitive interests and limitations, non-molecular explanations may not be improved, corrected or grounded in molecular ones. Moreover, antireductionists themselves view their claim as a metaphysical or ontological one about the existence of facts molecular biology cannot identify, express, or explain. However, this is tantamount (...) to a rejection of physicalism and so causes the antireductionist discomfort. In this paper we argue that vindicating physicalism requires a physicalistic account of the principle of natural selection, and we provide such an account. The most important pay-off to the account is that it provides for the very sort of autonomy from the physical that antireductionists need without threatening their commitment to physicalism. (shrink)

Given some reasonable assumptions concerning the nature of mental causation, non-reductive physicalism faces the following dilemma. If mental events cause physical events, they merely overdetermine their effects (given the causal closure of the physical). If mental events cause only other mental events, they do not make the kind of difference we want them to. This dilemma can be avoided if we drop the dichotomy between physical and mental events. Mental events make a real difference if they cause actions. But actions (...) are neither mental nor physical events. They are realized by physical events, but they are not type-identical with them. This gives us non-reductive physicalism without downward causation. The tenability of this view has been questioned. Jaegwon Kim, in particular, has argued that non-reductive physicalism is committed to downward causation. Appealing to the nature of actions, I will argue that this commitment can be avoided. (shrink)

Nonreductive naturalism holds that we can preserve the (scientifically valued) metaphysical truth of physicalism while averting the methodological mistakes of reductionism. Acceptable scientificexplanation need not (in some cases cannot and in many cases, should not) be formulated in the language of physical science. Persuasive arguments about the properties of phenomenal consciousnesspurport to show that physicalism is false, namely that phenomenal experience is a nonphysical fact. I examine two recent, comprehensive efforts to naturalize phenomenal consciousness and argue thatnonreductive naturalism yields a (...) dilemma of reductionism or panpsychism. (shrink)

In the first part of this paper I argue that epiphenomenalism does not pose a threat to nonreductive physicalism, if type-epiphenomenalism does not imply the redundancy of mental (or in general higher-level) typing of events and/or states. Furthermore, if justifiable induction over folk-psychological regularities is possible independently of the ways in which these regularities are realized, type-epiphenomenalism does not imply the redundancy ofmental typing. Inthe second part of this paper I explain how justifiable 'cross-realization induction' can be possible. This explanation (...) does what none of the currently available ones can: combine the generally accepted ideas that (i) folk-psychology is a successful means of predicting, explaining, and understanding human behaviour and (ii) that mental states are multiply realized. Given these two steps, it is relatively safe to say that there is no epiphe-nomenalism-threat to nonreductive physicalism. (shrink)

In this paper, I want to explore the question of whether or not there are laws in psychology. Jaegwon Kim has argued (Supervenience and mind. MIT press, Cambridge; 1993; Mind in a physical world. MIT press, Cambridge 1998) that there are no laws in psychology that contain reference to multiply realized kinds, because statements about such kinds fail to be projectible. After reviewing Kim’s argument for this claim, I show how his conclusion hinges on a hidden assumption: that a kind (...) can only feature in a projectible statement if it is defined by an internal physical property. This assumption, however, is false: constrained kinds can feature in projectible statements, and yet they are not defined by any set of internal physical properties. I suggest that many mental terms actually refer to constrained kinds, and give an example from motor neuroscience of a constrained kind that is multiply realizable and “projectible”: the intention to move voluntarily in a specific direction. (shrink)

A major stumbling block for non-reductive physicalism is Kim’s disjunctive property objection. In this paper I bring certain issues in sparse ontology to bear on the objection, in particular the theses of priority monism and priority pluralism. Priority pluralism (or something close to it, anyway) is a common ontological background assumption, so in the first part of the paper I consider whether the disjunctive property objection applies with equal force to non-reductive physicalism on the assumption that priority monism is instead (...) true. I ultimately conclude that non-reductive physicalism still faces a comparable problem. In the second part, I argue, surprisingly enough, that what I call ‘fine-grained reductionism’, a particular version of which Kim proposes as an alternative to non-reductive physicalism, may work better in the monist framework than the pluralist one. I conclude that issues in sparse ontology, therefore, are more relevant to the debate about physicalism than one may have thought. (shrink)

In this paper, the relation between identity-based reduction and one specific sort of reductive explanation is considered. The notion of identity-based reduction is spelled out and its role in the reduction debate is sketched. An argument offered by Jaegwon Kim, which is supposed to show that identity-based reduction and reductive explanation are incompatible, is critically examined. From the discussion of this argument, some important consequences about the notion of reduction are pointed out.

This book presents a range of essays on the conceptual foundations of physicalism, mental causation and human agency, written by established and leading authors ...

I argue that an adequate account of non-reductive realization must guarantee satisfaction of a certain condition on the token causal powers associated with (instances of) realized and realizing entities---namely, what I call the 'Subset Condition on Causal Powers' (first introduced in Wilson 1999). In terms of states, the condition requires that the token powers had by a realized state on a given occasion be a proper subset of the token powers had by the state that realizes it on that occasion. (...) Accounts of non-reductive realization conforming to this condition are implementing what I call 'the powers-based subset strategy'. I focus on the crucial case involving mental and brain states; the results may be generalized, as appropriate. I first situate and motivate the strategy by attention to the problem of mental causation; I make the case, in schematic terms, that implementation of the strategy makes room (contra Kim 1989, 1993, 1998, and elsewhere) for mental states to be ontologically and causally autonomous from their realizing physical states, without inducing problematic causal overdetermination, and compatible with both Physicalism and Non-reduction; and I show that several contemporary accounts of non-reductive realization (in terms of functional realization, parthood, and the determinable/determinate relation) are plausibly seen as implementing the strategy. As I also show, implementation of the powers-based strategy does not require endorsement of any particular accounts of either properties or causation---indeed, a categoricalist contingentist Humean can implement the strategy. The schematic location of the strategy in the space of available responses to the problem of mental (more generally, higher-level) causation, as well as the fact that the schema may be metaphysically instantiated, strongly suggests that the strategy is, appropriately generalized and instantiated, sufficient and moreover necessary for non-reductive realization. I go on to defend the sufficiency and necessity claims against a variety of objections, considering, along the way, how the powers-based subset strategy fares against competing accounts of purportedly non-reductive realization in terms of supervenience, token identity, and constitution. (shrink)

Some claim that Non-reductive Physicalism (NRP) is an unstable position, on grounds that NRP either collapses into reductive physicalism (contra Non-reduction ), or expands into emergentism of a robust or ‘strong’ variety (contra Physicalism ). I argue that this claim is unfounded, by attention to the notion of a degree of freedom—roughly, an independent parameter needed to characterize an entity as being in a state functionally relevant to its law-governed properties and behavior. I start by distinguishing three relations that may (...) hold between the degrees of freedom needed to characterize certain special science entities, and those needed to characterize (systems consisting of) their composing physical (or physically acceptable) entities; these correspond to what I call ‘reductions’, ‘restrictions’, and ‘eliminations’ in degrees of freedom. I then argue that eliminations in degrees of freedom, in particular—when strictly fewer degrees of freedom are required to characterize certain special science entities than are required to characterize (systems consisting of) their composing physical (or physically acceptable) entities—provide a basis for making sense of how certain special science entities can be both physically acceptable and ontologically irreducible to physical entities. (shrink)

How can mental properties bring about physical effects, as they seem to do, given that the physical realizers of the mental goings-on are already sufficient to cause these effects? This question gives rise to the problem of mental causation (MC) and its associated threats of causal overdetermination, mental causal exclusion, and mental causal irrelevance. Some (e.g., Cynthia and Graham Macdonald, and Stephen Yablo) have suggested that understanding mental-physical realization in terms of the determinable/determinate relation (henceforth, 'determination') provides the key to (...) solving the problem of MC: if mental properties are determinables of their physical realizers, then (since determinables and determinates are distinct, yet don't causally compete) all three threats may be avoided. Not everyone agrees that determination can do this good work, however. Some (e.g., Douglas Ehring, Eric Funkhauser, and Sven Walter) object that mental-physical realization can't be determination, since such realization lacks one or other characteristic feature of determination. I argue that on a proper understanding of the features of determination key to solving the problem of MC these arguments can be resisted. (shrink)

The physicalist thesis that all entities are nothing over and above physical entities is often interpreted as appealing to a supervenience-based account of "nothing over and aboveness”, where, schematically, the A-entities are nothing over and above the B-entities if the A-entities supervene on the B-entities. The main approaches to filling in this schema correspond to different ways of characterizing the modal strength, the supervenience base, or the supervenience connection at issue. I consider each approach in turn, and argue that the (...) resulting formulation of physicalism is compatible with physicalism’s best traditional rival: a naturalist emergentism. Others have argued that supervenience-based formulations of physicalism fail. My aim here, besides addressing the full spectrum of supervenience-based approaches, is to show how certain philosophical and scientific theses concerning naturalism, properties, and laws give us new reasons to think that supervenience-based formulations of physicalism are untenable. (shrink)

Horgan claims that physicalism requires "superdupervenience" -- supervenience plus robust ontological explanation of the supervenient in terms of the base properties. I argue that Horgan's account fails to rule out physically unacceptable emergence. I rather suggest (in the earliest explicit presentation of the powers-based subset strategy) that this and other unacceptable possibilities may be ruled out by requiring that each individual causal power in the set associated with a given supervenient property be numerically identical with a causal power in the (...) set associated with its base property. Satisfying this condition is all that is needed to render supervenience superduper. I go on to show that a wide variety of physicalist accounts, both reductive and non-reductive, are implicitly or explicitly designed to meet this condition, and so are more similar than they seem. (shrink)

Non-reductive physicalism is committed to two theses: first, that mental properties are ontologically autonomous, and second, that physicalism is true. Jaegwon Kim has argued that this view is unstable – to honor one thesis, one must abandon the other. In this paper, I present an account of property realization that addresses Kim’s criticism and that explains how the two theses are indeed comfortably compatible.

Some theorists who emphasize the complexity of biological and cognitive systems and who advocate the employment of the tools of dynamical systems theory in explaining them construe complexity and reduction as exclusive alternatives. This paper argues that reduction, an approach to explanation that decomposes complex activities and localizes the components within the complex system, is not only compatible with an emphasis on complexity, but provides the foundation for dynamical analysis. Explanation via decomposition and localization is nonetheless extremely challenging, and an (...) analysis of recent cognitive neuroscience research on memory is used to illustrate what is involved. Memory researchers split between advocating memory systems and advocating memory processes, and I argue that it is the latter approach that provides the critical sort of decomposition and localization for explaining memory. The challenges of linking distinguishable functions with brain processes is illustrated by two examples: competing hypotheses about the contribution of the hippocampus and competing attempts to link areas in frontal cortex with memory processing. (shrink)

1. A Historical Look at Unity 2. Field Guide to Modern Concepts of Reduction and Unity 3. Kitcher's Revisionist Account of Unification 4. Critics of Unity 5. Integration Instead of Unity 6. Reduction via Mechanisms 7. Case Studies in Reduction and Unification across the Disciplines.

Ansgar Beckermann Once, a mind-body theory based upon the idea of supervenience seemed to be a promising alternative to the various kinds of reductionistic physicalism. In recent years, however, Jaegwon Kim has subjected his own brainchild to a very thorough criticism. With most of Kim’s arguments I agree wholeheartedly - not least because they converge with my own thoughts.² In order to explain the few points of divergence with Kim’s views, I shall have to prepare the ground a little. In (...) the course of this paper I will therefore do two things: At the start, I will try to sketch the logical topography of the „solution space“ of the problem Kim is concerned with. As a second step, I shall then comment on the concepts of identity, realization and reduction and attempt to show that Kim’s concept of realization is too narrow, because he is still very much in the grip of the traditional view with regard to what it means to show that a property _F _is identical with, or realized by, another property _G_. (shrink)

In his recent _The Rediscovery of the Mind_ John Searle tries to destroy cognitive science _and_ preserve a future in which a ``perfect science of the brain'' (1992, p. 235) arrives. I show that Searle can't accomplish both objectives. The ammunition he uses to realise the first stirs up a maelstrom of consciousness so wild it precludes securing the second.

The volumes in this acclaimed series (shown in its entirety on this page and page 25) explore a diverse range of topics -- from the neurosciences and ...

... THIRD WORLD EPISTEMOLOGY L. Jonathan Cohen . Sir Karl Popper's striking hypothesis about a third world of objective knowledge deserves careful scrutiny ...

Orthodox neural materialists think mental states are neural events or orthodox material properties of neutral events. Orthodox material properties are defining properties of the “physical”. A “defining property” of the physical is a type of property that provides a necessary condition for something’s being correctly termed “physical”. In this paper I give an argument against orthodox neural materialism. If successful, the argument would show at least some properties of some mental states are not orthodox material properties of neural events. Oppositing (...) philosophical orthodoxy, I show there are no posteriori identities -- identities that cannot be known of a priori. (shrink)

The functionalist conception of mental properties, together with their multiple realizability, is often taken to entail their irreducibility. It might seem that the only way to revise that judgement is to weaken the requirements traditionally imposed on reduction. However, Jaegwon Kim has recently argued that we should, on the contrary, strengthen those requirements, and construe reduction as what I propose to call “logical reduction”, a model of reduction inspired by emergentism. Moreover, Kim claims that what he calls “functional reduction” allows (...) one to reduce (at least some) mental properties by these new standards. I argue against both theses. First, I present a counterexample to the emergentist model of reduction: The model judges irreducible certain properties which are clearly reducible. Second, I contestthat functional reduction as construed by Kim satisfies the emergentist constraints. Functional reduction implies, over and above a functional definition of the reduced property, the indication of its realizers. But the latter information corresponding to the discovery of a (local) bridge law, is empirical and not purely logical. (shrink)

Recent worries about possible epiphenomenalist consequences of nonreductive materialism are misplaced, not, as many have argued, because nonreductive materialism does not have epiphenomenalist implications but because the epiphenomenalist implications are actually virtues of the theory, rather than vices. It is only by showing how certain kinds of mental properties are causally impotent that cognitive scientific explanations of mentality as we know them are possible.