Online research in philosophy

I am very much in sympathy with the overall approach of John Campbell’s paper, “Reference as Attention”. My sympathy extends to a variety of its features. I think he is right to suppose, for instance, that neuropsychological cases provide important clues about how we should treat some traditional philosophical problems concerning perception and reference. I also think he is right to suppose that there are subtle but important relations between the phenomena of perception, action, consciousness, attention, and reference. I even think that there is probably something importantly right about the main claim of the paper. I take this to be the claim that there is a tight connection – of some sort at any rate – between our capacity to refer demonstratively to perceptually presented objects and our capacity to attend to those objects in our conscious awareness of them. What precisely this connection consists in, however, remains a mystery to me. My goal in these comments is to clarify this result. I will begin, in section 2, with a fairly general statement of the problem I take Campbell to have set himself. Following this, in section 3, I will focus more particularly on what kind of relation Campbell takes to exist, or does exist, or perhaps could exist between attention and demonstrative reference. I examine four options, the first three of which seem to admit of clear counterexamples, and the fourth of which is too weak to be of any real interest.

I examine John Campbell’s claim that the determination of the reference of a perceptual demonstrative requires conscious visual object-based selective attention. I argue that although Campbell’s claim to the effect that, first, a complex binding parameter is needed to establish the referent of a perceptual demonstrative, and, second, that this referent is determined independently of, and before, the application of sortals is correct, this binding parameter does not require object-based attention for its construction. If object-based attention were indeed required then the determination of the referent would necessarily involve the application of sortal concepts, since object-based attention initiates top-down cognitive effects on visual processing. I also examine Mohan Matthen’s claim that reference to objects is established only through the visual processing in the dorsal visual stream and argue that although it is true that processing in the dorsal stream can determine reference, a thesis that goes against Campbell’s view that the determination of the referent requires conscious attention, processing along the ventral visual stream can also establish the reference of perceptual demonstratives. It also claim that Matthen’s account of dorsal processing underestimates the kind of information processed along the dorsal stream and this has some implications regarding perceptual demonstratives reference fixing.

John Campbell investigates how consciousness of the world explains our ability to think about the world; how our ability to think about objects we can see depends on our capacity for conscious visual attention to those things. He illuminates classical problems about thought, reference, and experience by looking at the underlying psychological mechanisms on which conscious attention depends.

John Campbell argues that visual attention to objects is the means by which we can refer to objects, and that this is so because conscious visual attention enables us to retrieve information about a location. It is argued here that while Campbell is right to think that we visually attend to objects, he does not give us sufficient ground for thinking that consciousness is involved, and is wrong to assign an intermediary role to location. Campbell’s view on sortals is also queried, as is his espousal of the so-called Referential View of Experience.

We assemble here in this time and place to discuss the thesis that conscious attention can provide knowledge of reference of perceptual demonstratives. I shall focus my commentary on what this claim means, and on the main argument for it found in the first five chapters of Reference and Consciousness. The middle term of that argument is an account of what attention does: what its job or function is. There is much that is admirable in this account, and I am confident that it will be the foundation, the launching-pad, for much future work on the subject. But in the end I will argue that Campbell's picture makes the mechanisms of attention too smart: smarter than they are, smarter than they could be. If we come to a more realistic appraisal of the skills and capacities of our sub-personal minions, the "knowledge of reference" which they yield will have to be taken down a notch or two. But first let us clarify what the argument is.

We assemble here in this time and place to discuss the thesis that conscious attention can provide knowledge of reference of perceptual demonstratives. I shall focus my commentary on what this claim means, and on the main argument for it found in the first five chapters of Reference and Consciousness. The middle term of that argument is an account of what attention does: what its job or function is. There is much that is admirable in this account, and I am confident that it will be the foundation, the launching-pad, for much future work on the subject. But in the end I will argue that Campbell's picture makes the mechanisms of attention too smart: smarter than they are, smarter than they could be. If we come to a more realistic appraisal of the skills and capacities of our subpersonal minions, the "knowledge of reference" which they yield will have to be taken down a notch or two. But first let us clarify what the argument is.