•  2172
    How Does Colour Experience Represent the World?
    In Derek Brown & Fiona Macpherson (eds.), Routledge Handbook of Philosophy of Colour, Routledge. 2017.
    Many favor representationalism about color experience. To a first approximation, this view holds that experiencing is like believing. In particular, like believing, experiencing is a matter of representing the world to be a certain way. Once you view color experience along these lines, you face a big question: do our color experiences represent the world as it really is? For instance, suppose you see a tomato. Representationalists claim that having an experience with this sensory character is ne…Read more
  •  1706
    Consciousness and Coincidence: The Puzzle of Psychophysical Harmony
    Journal of Consciousness Studies 1 (5-6): 143-155. 2020.
    In “The Meta-Problem of Consciousness”, David Chalmers briefly raises a problem about how the connection between consciousness and our verbal and other behavior appears “lucky”. I raise a counterexample to Chalmers’s formulation of the problem. Then I develop an alternative formulation. Finally, I consider some responses, including illusionism about consciousness.
  •  4004
    I begin by describing what I call simple naïve realism. Then I describe relevant empirical results. Next, I develop two new empirical arguments against simple naive realism. Then I briefly look at two new, more complex forms of naïve realism: one due to Keith Allen and the other due to Heather Logue and Ori Beck. I argue that they are not satisfactory retreats for naive realists. The right course is to reject naive realism altogether. My stalking horse is contemporary naive realism but there is …Read more
  •  1497
    The Real Trouble for Armchair Arguments Against Phenomenal Externalism
    In Mark Sprevak & Jesper Kallestrup (eds.), New Waves in Philosophy of Mind, Palgrave-macmillan. pp. 153-181. 2014.
    I criticize some armchair arguments against phenomenal externalism due to Block, Hawthorne, Kriegel, Levine, Shoemaker and others. I conclude by discussing an overlooked armchair argument: the argument from phenomenal localism.
  •  210
    Have Byrne & Hilbert answered Hardin's challenge?
    Behavioral and Brain Sciences 26 (1): 44-45. 2003.
    I argue that Byrne & Hilbert (B&H) have not answered Hardin's objection to physicalism about color concerning the unitary-binary structure of the colors for two reasons. First, their account of unitary-binary structure seems unsatisfactory. Second, pace B&H, there are no physicalistically acceptable candidates to be the hue-magnitudes. I conclude with a question about the justification of physicalism about color.
  •  3664
    What Is the Integrated Information Theory of Consciousness?
    Journal of Consciousness Studies 26 (1-2): 1-2. 2019.
    In the first instance, IIT is formulated as a theory of the physical basis of the 'degree' or ‘level’ or ‘amount’ of consciousness in a system. In addition, integrated information theorists have tried to provide a systematic theory of how physical states determine the specific qualitative contents of episodes of consciousness: for instance, an experience as of a red and round thing rather than a green and square thing. I raise a series of questions about the central explanatory target, the 'degr…Read more
  •  3178
    Perhaps more than any other philosopher of mind, Ned Block synthesizes philosophical and scientific approaches to the mind; he is unique in moving back and forth across this divide, doing so with creativity and intensity. Over the course of his career, Block has made groundbreaking contributions to our understanding of intelligence, representation, and consciousness. Blockheads! (the title refers to Block's imaginary counterexample to the Turing test—and to the Block-enthusiast contributors) off…Read more
  •  4085
    Discusses recent work on representationalism, including: the case for a representationalist theory of consciousness, which explains consciousness in terms of content; rivals such as neurobiological type-type identity theory (Papineau, McLaughlin) and naive realism (Allen, Campbell, Brewer); John Campbell and David Papineau's recent objections to representationalism; the problem of the "laws of appearance"; externalist vs internalist versions of representationalism; the relation between represent…Read more
  •  595
  •  575
    Comments on an early version of Johnston's "The Problem with the Content View" (in Berit Brogaard ed. *Does Perception Have Content?*, 2014) delivered at a workshop on perception at NYU in 2010.
  •  3597
    The significance argument for the irreducibility of consciousness
    Philosophical Perspectives 31 (1): 349-407. 2017.
    The Significance Argument (SA) for the irreducibility of consciousness is based on a series of new puzzle-cases that I call multiple candidate cases. In these cases, there is a multiplicity of physical-functional properties or relations that are candidates to be identified with the sensible qualities and our consciousness of them, where those candidates are not significantly different. I will argue that these cases show that reductive materialists cannot accommodate the various ways in which con…Read more
  •  636
    Does it matter whether we perceptually represent tomato-hood?
  •  119
    The Perceptual Representation of Objects and Natural Kinds: Comments on Speaks
    Philosophy and Phenomenological Research 95 (2): 470-477. 2017.
  •  853
    Comments on Jane Friedman "Inquiry and Belief" (for 2015 Ranch Conference). Jane Friedman proposes DBI: One ought not to believe an (complete) answer to a question & at the same time inquire into that question – that’d be irrational. I raise some counterexamples. Then I propose an alternative principle which avoids the counterexamples and which has the further advantage of following from more general platitudes about knowledge. The general point is that even if one believes an answer to a questi…Read more
  •  3126
    I develop a new argument against Russellian Monism about consciousness.
  •  741
    I raise some objections to the theory presented in *Outside Color*.
  •  2166
    In the first instance, IIT is formulated as a theory of the physical basis of the 'degree' or ‘level’ or ‘amount’ of consciousness in a system. I raise a series of questions about the central explanatory target, the 'degree' or ‘level’ or ‘amount’ of consciousness. I suggest it is not at all clear what scientists and philosophers are talking about when they talk about consciousness as gradable. This point is developed in more detail in my paper "What Is the Integrated Information Theory of Consc…Read more
  •  602
    Intentionalism and perceptual presence
    Philosophical Perspectives 21 (1): 495-541. 2007.
    H. H. Price (1932) held that experience is essentially presentational. According to Price, when one has an experience of a tomato, nothing can be more certain than that there is something of which one is aware. Price claimed that the same applies to hallucination. In general, whenever one has a visual experience, there is something of which one is aware, according to Price. Call this thesis Item-Awareness
  •  2240
    A Simple View of Consciousness
    In Robert C. Koons & George Bealer (eds.), The waning of materialism, Oxford University Press. pp. 25--66. 2010.
    Phenomenal intentionality is irreducible. Empirical investigation shows it is internally-dependent. So our usual externalist (causal, etc.) theories do not apply here. Internalist views of phenomenal intentionality (e. g. interpretationism) also fail. The resulting primitivist view avoids Papineau's worry that terms for consciousness are highly indeterminate: since conscious properties are extremely natural (despite having unnatural supervenience bases) they are 'reference magnets'.
  •  1305
    Phenomenal intentionality is a singular form of intentionality. Science shows it is internally-determined. So standard externalist models for reducing intentionality don't apply to it.
  •  393
    Can the physicalist explain colour structure in terms of colour experience?1
    Australasian Journal of Philosophy 84 (4). 2006.
    Physicalism about colour is the thesis that colours are identical with response-independent, physical properties of objects. I endorse the Argument from Structure against Physicalism about colour. The argument states that Physicalism cannot accommodate certain obvious facts about colour structure: for instance, that red is a unitary colour while purple is a binary colour, and that blue resembles purple more than green. I provide a detailed formulation of the argument. According to the most popul…Read more
  •  140
    An argument against Armstrong's analysis of the resemblance of universals
    Australasian Journal of Philosophy 75 (1). 1997.
    This Article does not have an abstract
  •  1684
    Why explain visual experience in terms of content?
    In Bence Nanay (ed.), Perceiving the world, Oxford University Press. pp. 254--309. 2010.
  •  2304
    Does Phenomenology Ground Mental Content?
    In Uriah Kriegel (ed.), The Phenomenal Intentionality Research Program, Oxford University Press. pp. 194-234. 2013.
    I develop several new arguments against claims about "cognitive phenomenology" and its alleged role in grounding thought content. My arguments concern "absent cognitive qualia cases", "altered cognitive qualia cases", and "disembodied cognitive qualia cases". However, at the end, I sketch a positive theory of the role of phenomenology in grounding content, drawing on David Lewis's work on intentionality. I suggest that within Lewis's theory the subject's total evidence plays the central role in …Read more
  •  212
    Consciousness * by Christopher hill
    Analysis 71 (2): 393-397. 2011.
    (No abstract is available for this citation).
  •  730
    These are some responses to an early version of Johnston's paper "The Personite Problem" (now published in Nous).
  •  2
    The mind-body problem is one of the last great intellectual mysteries facing humankind. The hard core of the mind-body problem is the problem of qualitative character: the what-it's-likeness of conscious states. What is the nature of qualitative character? Can it be explained in terms of the intentional content of experience? What is the nature of the so-called secondary qualities---colors, sounds, smells, and so on? Finally, is Physicalism about qualitative character correct? In other words, ar…Read more