Qualia Compression

Color qualia inversion scenarios have played a key role in various philosophical debates. Most notably perhaps, they have figured in skeptical arguments for the fundamental unknowability of other persons’ color experiences. For these arguments to succeed, it must be assumed that a person's having inverted color qualia may go forever unnoticed. This assumption is now generally deemed to be implausible. The present paper defines a variant of color qualia inversion—termed ‘‘color qualia compression’’—and argues that the possibility of undetectable color qualia compression is immune to the objections that have been levelled against color qualia inversion arguments, and that color qualia compression scenarios support full‐blown skepticism regarding other people's color experiences.     

Individualism and the metaphysics of actions

I examine an intuitive property of folk-psychological explanations I call self-sufficiency. I argue that individualism cannot honor this property and work toward distilling an account of psychological explanation that does honor it, given some fairly standard assumptions. In doing so, my preference for an Externalist individuation of intentional state will emerge unambiguously. The assumptions I rely on are fairly standard but not uncontroversial. Yet not always do I attempt to defend them from objections. My goal is an account of folk psychology consistent with our every-day practices rather than the deduction of an idealized psychology from first principles. I conclude with some applications offered as evidence that the goal was achieved.     

CHARACTER,PSYCHOANALYTIC IDENTIFICATION,AND NUMERICAL IDENTITY

Identification figures prominently in moral psychological explanations. I argue that in identification the subject has an ‘identity‐thought’, which is a thought about her numerical identity with the figure she identifies with. In Freud's psychoanalytic psychology character is founded on unconscious identification with parental figures. Moral philosophers have drawn on psychoanalysis to explain how undesirable or disadvantageous character dispositions are resistant to insight through being unconscious. According to Richard Wollheim's analysis of Freud's theory, identification is the subject's disposition to imagine, unconsciously, her bodily merging with the figure she identifies with. I argue that this explanation of identification is not adequate. Human character is held to be capable of change when self‐reflection brings unconscious identifications to conscious self‐knowledge. I argue that for self‐knowledge these identifications must be an intelligible part of the subject's self‐conception, and that Wollheim's ‘merging phantasy’ is not intelligible to the subject in this way. By contrast, the subject's thought that she is numerically identical to the figure she identifies with does provide an intelligible starting‐point for reflecting on this identification. This psychoanalytic account provides a clear conception of identification with which to investigate puzzle cases in the moral psychology of character.     

The reality of qualia

This paper argues for the reality of qualia as aspects of phenomenal experience. The argument focuses on color vision and develops a dispositionalist, subjectivist account of what it is for an object to be colored. I consider objections to dispositionalism on epistemological, metaphysical, and ‚ordinary’ grounds. I␣distinguish my representative realism from sense-data theories and from recent ‚representational’ or ‚intentional’ theories, and I argue that there is no good reason to adopt a physicalist stance that denies the reality of qualia as phenomenally available intentional contents in Brentano’s original sense of ‚intentionality’.     

Semantics and the computational paradigm in cognitive psychology

There is a prevalent notion among cognitive scientists and philosophers of mind that computers are merely formal symbol manipulators, performing the actions they do solely on the basis of the syntactic properties of the symbols they manipulate. This view of computers has allowed some philosophers to divorce semantics from computational explanations. Semantic content, then, becomes something one adds to computational explanations to get psychological explanations. Other philosophers, such as Stephen Stich, have taken a stronger view, advocating doing away with semantics entirely. This paper argues that a correct account of computation requires us to attribute content to computational processes in order to explain which functions are being computed. This entails that computational psychology must countenance mental representations. Since anti-semantic positions are incompatible with computational psychology thus construed, they ought to be rejected. Lastly, I argue that in an important sense, computers are not formal symbol manipulators.     

On non-pragmatic Millianism

Speakers often judge the sentence “Lois Lane believes that Superman flies” to be true and the sentence “Lois Lane believes that Clark Kent flies” to be false. If Millianism is true, however, these sentences express the very same proposition and must therefore have same truth value. “Pragmatic” Millians like Salmon and Soames have tried to explain speakers’ “anti-substitution intuitions” by claiming that the two sentences are routinely used to pragmatically convey different propositions which do have different truth values. “Non-Pragmatic” Millians like Braun, on the other hand, have argued that the Millian should not appeal to pragmatics and opt instead for a purely psychological explanation. I will present two objections against Non-Pragmatic Millianism. The first one is that the view cannot account for the intuitions of speakers who accept the identity sentence “Superman is Clark Kent”: applying a psychological account in this case, I will argue, would yield wrong predictions about speakers who resist substitution with simple sentences. I will then consider a possible response from the non-pragmatic Millian and show that the response would in fact require an appeal to pragmatics. My conclusion will be that Braun’s psychological explanation of anti-substitution intuitions is untenable, and that the Millian is therefore forced to adopt a pragmatic account. My second objection is that Non-Pragmatic Millianism cannot account for the role that certain commonsense intentional generalizations play in the explanation of behavior. I will consider a reply offered by Braun and argue that it still leaves out a large class of important generalizations. My conclusion will be that Braun’s non-pragmatic strategy fails, and that the Millian will again be forced to adopt a pragmatic account of intentional generalizations if he wants to respond to the objection. In light of my two objections, my general conclusion will be that non-pragmatic versions of Millianism should be rejected. This has an important consequence: if Millianism is true, then some pragmatic Millian account must be correct. It follows that, if standard objections against pragmatic accounts succeed, then Millianism must be rejected altogether.     

Normativity is the mother of intention: Wittgenstein, normative practices and neurological representations

To many philosophers, a scientific explanation of our contentful intentional states requires us to identify neurological representations that implement intentional states, and requires a reductive explanation of such representations' contents in terms of objective physical properties. From a Wittgensteinian point of view, however, contentful intentional states are normatively constituted within linguistic, social practices. These cannot be completely accounted for in purely physical terms. I outline this normative thesis, defending it from four objections: that it is not naturalistic, that social norms depend on optional desires to conform, that it over-intellectualizes having intentional states (so excludes animals and infants), and that it cannot account for the causal role of content. I explain the ramifications for scientific psychology and neuroscience, and for interpreting the results of such empirical research. Nothing is objectively a contentful representation, yet some brain states or processes can be normatively constituted as representations with content.     

Qualia and vagueness

In this paper I present two arguments against the thesis that we experience qualia. I argue that if we experienced qualia then these qualia would have to be essentially vague entities. And I then offer two arguments, one a reworking of Gareth Evans' argument against the possibility of vague objects, the other a reworking of the Sorites argument, to show that no such essentially vague entities can exist. I consider various objections but argue that ultimately they all fail. In particular I claim that the stock responses to the Sorites argument fail against my reworking of the argument because they require us to make a distinction between a determinate reality and how that reality appears to us, whereas in the case of qualia we can make no such distinction. I conclude that there can be no such things as qualia.I would like to thank the referees and Leopold Stubenberg for their help and comments.     

Affect,perceptual experience,and disclosure

A prominent number of contemporary theories of emotional experience—understood as occurrent, phenomenally conscious episodes of emotions with an affective character that are evaluatively directed towards particular objects or states of affairs—are motivated by the claim that phenomenally conscious affective experience, when appropriate, grants us epistemic access not merely to features of the experience but also to features of the object of experience, namely its value. I call this the claim of affect as a disclosure of value. The aim of this paper is to clarify the sort of assumptions about experience that we ought to avoid if we want to be able to argue that for the claim of affect as a disclosure of value. There are two core arguments in this paper. First, I argue that Mark Johnston’s account of affect as a disclosure of value, due to its naïve realist commitments, relapses into a position that is vulnerable to the same objection put forward by some naïve realists against intentionalist accounts of perceptual experience. Second, I argue that Michelle Montague’s account, due to its phenomenal intentionalist commitments, relapses into a position that is vulnerable to the same objections put forward against qualia theories of the phenomenal character of perceptual experience. The upshot of the paper is that the core assumptions embedded in the three dominant models of experience—namely naïve realism, different versions of intentionalism, and qualia theory—are problematic as found in contemporary accounts of affect as a disclosure of value.     

In defence of a perspectival semantics for ‘know’

Relativism offers an ingenious way of accommodating most of our intuitions about ‘know’: the truth-value of sentences containing ‘know’ is a function of parameters determined by a context of use and a context of assessment. This sort of double-indexing provides a more adequate account of the linguistic data involving ‘know’ than does standard contextualism. However, relativism has come under recent attack: it supposedly cannot account for the factivity of ‘know’, and it entails, counterintuitively, that circumstances of evaluation have features that cannot be shifted by any intensional operator. I offer replies to these objections on behalf of the relativist. I then argue that a version of contextualism can account for the same data as relativism without relativizing sentence truth to contexts of assessment. This version of contextualism is thus preferable to relativism on methodological grounds.     

Causal Co-personality: In defence of the psychological continuity theory

Abstract

The view that an account of personal identity can be provided in terms of psychological continuity has come under fire from an interesting new angle in recent years. Critics from a variety of rival positions have argued that it cannot adequately explain what makes psychological states co-personal (i.e. the states of a single person). The suggestion is that there will inevitably be examples of states that it ascribes wrongly using only the causal connections available to it. In this paper, I describe three distinct attacks on the psychological continuity theory along these lines. While I acknowledge that a number of interesting issues arise, I argue that the theory can withstand all three attacks.     

Counterfactuals and the fixity of the past

I argue that David Lewis’s attempt, in his ‘Counterfactual Dependence and Time’s Arrow’, to explain the fixity of the past in terms of counterfactual independence is unsuccessful. I point out that there is an ambiguity in the claim that the past is counterfactually independent of the present (or, more generally, that the earlier is counterfactually independent of the later), corresponding to two distinct theses about the relation between time and counterfactuals, both officially endorsed by Lewis. I argue that Lewis’s attempt is flawed for a variety of reasons, including the fact that his own theory about the evaluation of counterfactuals requires too many exceptions to the general rule that the past is counterfactually independent of the present. At the end of the paper, I consider a variant of Lewis’s strategy that attempts to explain the fixity of the past in terms of causal, rather than counterfactual, independence. I conclude that, although this variant avoids some of the objections that afflict Lewis’s account, it nevertheless seems to be incapable of giving a satisfactory explanation of the notion of the fixity of the past.     

The location problem for color subjectivism

According to color subjectivism, colors are mental properties, processes, or events of visual experiences of color. I first lay out an argument for subjectivism founded on claims from visual science and show that it also relies on a philosophical assumption. I then argue that subjectivism is untenable because this view cannot provide a plausible account of color perception. I describe three versions of subjectivism, each of which combines subjectivism with a theory of perception, namely sense datum theory, adverbialism, and the virtual color proposal, and argue that each version faces serious objections. Considering these three theories of perception to be exhaustive of those available to the subjectivist, I conclude that subjectivism is untenable and that the scientifically motivated argument for this view is unsound. I then offer the diagnosis that the philosophical assumption on which this argument relies is mistaken.     

Intentions and Causes, Actions and Right Actions

I argue in this essay that belief/desire explanations are not logically true and not causal, and further that the antecedent of a true belief/desire conditional cannot be strengthened in such a way as to transform it into a true causal statement. I also argue that belief/desire explanations are not dispensable: they are presupposed in our justifications of scientific claims. The proposal is not that psychological determinism is false, but that some at least of our activities are not describable in causal terms. These arguments prepare the ground for a puzzle. If all human intentional behaviour is caused, then all actual linkages between psychological states and behaviour should be expressed in causal statements. But neither the action of asserting a causal statement nor the action of justifying the assertion can be described as the result of a cause. Therefore if one accepts that scientific claims can be justified, not all linkages between psychological states and subsequent action are expressible in causal statements. I do not offer a solution to this puzzle.     

The phenomenological character of color perception

When an object looks red to an observer, the visual experience of the observer has two important features. The experience visually represents the object as having a property—being red. And the experience has a phenomenological character; that is, there is something that it is like to have an experience of seeing an object as red. Let qualia be the properties that give our sensory and perceptual experiences their phenomenological character. This essay takes up two related problem for a nonreductive account of qualia. Some have argued that on such an account there is no room in a physicalist ontology for qualia. Section 1 shows how qualia might fit into a physicalist ontology. The second problem begins with the observation that there is a gap in scientific accounts of color experience; there is no explanation of why the features of the brain that determine our color experiences give those experiences their phenomenological character. Building on the results of Sect. 1, Sect. 2 develops an account of color perception that bridges this gap and shows how qualia give color perception its phenomenological character. To get a grip on the issues involved the paper begins by considering some aspects of a physicalist account of color.     

It’s in your nature: a pluralistic folk psychology

I suggest a pluralistic account of folk psychology according to which not all predictions or explanations rely on the attribution of mental states, and not all intentional actions are explained by mental states. This view of folk psychology is supported by research in developmental and social psychology. It is well known that people use personality traits to predict behavior. I argue that trait attribution is not shorthand for mental state attributions, since traits are not identical to beliefs or desires, and an understanding of belief or desire is not necessary for using trait attributions. In addition, we sometimes predict and explain behavior through appeal to personality traits that the target wouldn’t endorse, and so could not serve as the target’s reasons. I conclude by suggesting that our folk psychology includes the notion that some behavior is explained by personality traits—who the person is—rather than by beliefs and desires—what the person thinks. Consequences of this view for the debate between simulation theory and theory theory, as well as the debate on chimpanzee theory of mind are discussed.     

Some unsettled problems in behavioral neuroscience research

The goal of behavioral neuroscience is to map psychological concepts onto physiological and anatomical concepts and vice versa. The present paper reflects on some of the hidden obstacles that have to be overcome in order to find unique psychophysiological relationships. These are, among others: (1) the different status of concepts which are defined in the two domains (ontological subjectivity in psychology and ontological objectivity in physiology); (2) the distinct hierarchical levels to which concepts from the two domains may belong; (3) ambiguity of concepts, because—due to limited measurement resolution or definitional shortcomings—they sometimes do not cover unique states or processes; (4) ignored context dependencies. Moreover, it is argued that due to the gigantic number of states and state changes, which are possible in a nervous system, it seems unlikely that neuroscience can provide exact causal explanations and predictions of behavior. Rather, as in statistical thermodynamics the transition from the microlevel of explanations to the macrolevel is only possible with probabilistic uncertainty.     

Demystifying Without Quining: Wittgenstein and Dennett on Qualitative States

Abstract

In his 1991 book Consciousness Explained, Daniel Deimett presents his “Multiple Drafts” model of consciousness. Central to his theory is the rejection of the notion of ‘qualia’ of the existence of the purported ‘qualitative character’ of conscious experience that many argue rules out the possibility of a purely materialist theory of mind. In eliminating qualia from his theory of consciousness, Dennett claims to be following in the footsteps of Wittgenstein, who also had much to say regarding the nature of ‘private’ experience. In this paper I reject this claim and argue that the elimination of qualia plays no part in Wittgenstein’s radical understanding of conscious experience.’¹