What do we see? We are visually conscious of colors and shapes, but are we also visually conscious of complex properties such as being John Malkovich? In this book, Susanna Siegel develops a framework for understanding the contents of visual experience, and argues that these contents involve all sorts of complex properties. Siegel starts by analyzing the notion of the contents of experience, and by arguing that theorists of all stripes should accept that experiences have contents. She then introduces a (...) method for discovering the contents of experience: the method of phenomenal contrast. This method relies only minimally on introspection, and allows rigorous support for claims about experience. She then applies the method to make the case that we are conscious of many kinds of properties, of all sorts of causal properties, and of many other complex properties. She goes on to use the method to help analyze difficult questions about our consciousness of objects and their role in the contents of experience, and to reconceptualize the distinction between perception and sensation. Siegel's results are important for many areas of philosophy, including the philosophy of mind, epistemology, and the philosophy of science. They are also important for the psychology and cognitive neuroscience of vision. (shrink)

Eric Schwitzgebel (2011) argues that phenomenal judgments are in general less reliable than perceptual judgments. This paper distinguishes two versions of this unreliability thesis. The process unreliability thesis says that unreliability in phenomenal judgments is due to faulty domain-specific mechanisms involved in producing these judgments, whereas the statistical unreliability thesis says that it is simply a matter of higher numbers of errors. Against the process unreliability thesis, I argue that the main errors and limitations in making phenomenal judgments can be (...) accounted for by domain-general factors: attention, working memory limits and conceptualization. As these factors are shared with the production of perceptual judgments, errors in phenomenal judgments are not due to faulty domain-specific processes. Furthermore, this account defends phenomenal judgments against general scepticism by providing criteria for distinguishing between reliable and unreliable phenomenal judgments. (shrink)

Hume famously denied that he could experience the self. Most subsequent philosophers have concurred with this finding. I argue that if the subject is to function as a bearer of experience it must (1) lack sensory qualities in itself to be compatible with bearing sensory qualities and (2) be single so that it can unify experience. I use Douglas Harding’s first-person experiments to investigate the visual gap where one cannot see one’s own head. I argue that this open space conforms (...) to the above criteria and hence is consistent with being the subject. I respond to the objection that this location is merely a lack of visual experience. I argue that this space also encompasses sound and touch properties and hence functions as a bearer for other sensory modalities. These first-person findings provide prima facie support for the view that the subject is a thin bearer of experience. (shrink)

In this review of Eric Schwitzgebel's "Perplexities of Consciousness", we discuss the book's arguments in light of the role of attention in introspection.

Following an on-line dialogue with Dennett (Velmans, 2001) this paper examines the similarities and differences between heterophenomenology (HP) and critical phenomenology (CP), two competing accounts of the way that conscious phenomenology should be, and normally is incorporated into psychology and related sciences. Dennett’s heterophenomenology includes subjective reports of conscious experiences, but according to Dennett, first person conscious phenomena in the form of “qualia” such as hardness, redness, itchiness etc. have no real existence. Consequently, subjective reports about such qualia should be (...) understood as prescientific attempts to make sense of brain functioning that can be entirely understood in third person terms. I trace the history of this position in behaviourism (Watson, Skinner and Ryle) and early forms of physicalism and functionalism (Armstrong), and summarise some of the difficulties of this view. Critical phenomenology also includes a conventional, third person, scientific investigation of brain and behaviour that includes subjects’ reports of what they experience. CP is also cautious about the accuracy or completeness of subjective reports. However, unlike HP, CP does not assume that subjects are necessarily deluded about their experiences or doubt that these experiences can have real qualities that can, in principle, be described. Such experienced qualities cannot be exhaustively reduced to third-person accounts of brain and behaviour. CP is also reflexive, in it assumes experimenters to have first-person experiences that they can describe much as their subjects do. And crucially, experimenter’s third-person reports of others are based, in the first instance, on their own first-person experiences. CP is commonplace in psychological science, and given that it conforms both to scientific practice and common sense, I argue that there is little to recommend HP other than an attempt to shore up a counterintuitive, reductive philosophy of mind. (shrink)

Investigations of the function of consciousness in human information processing have focused mainly on two questions: (1) where does consciousness enter into the information processing sequence and (2) how does conscious processing differ from preconscious and unconscious processing. Input analysis is thought to be initially "preconscious," "pre-attentive," fast, involuntary, and automatic. This is followed by "conscious," "focal-attentive" analysis which is relatively slow, voluntary, and flexible. It is thought that simple, familiar stimuli can be identified preconsciously, but conscious processing is needed (...) to identify complex, novel stimuli. Conscious processing has also been thought to be necessary for choice, learning and memory, and the organization of complex, novel responses, particularly those requiring planning, reflection, or creativity. (shrink)

In his provocative and engaging new book, Perplexities of Consciousness, Eric Schwitzgebel makes a compelling case that introspection is unreliable in the sense that we are prone to ignorance and error in making introspective judgments about our own conscious experience. My aim in this commentary is to argue that Schwitzgebel’s thesis about the unreliability of introspection does not have the damaging implications that he claims it does for the prospects of a broadly Cartesian approach to epistemology.

Reply to John Campbell's contribution to a symposium on *The Contents of Visual Experience*.

Reply to Jesse Prinz's contribution to a symposium on *The Contents of Visual Experience*.

Reply to Charles Travis's contribution to a symposium on *The Contents of Visual Experience*.

In this paper I discuss several proposals for how to find out which contents visual experiences have, and I defend the method I.

How can we discover the contents of experience? I argue that neither introspection alone nor naturalistic theories of experience content are sufficient to discover these contents. I propose another method of discovery: the method of phenomenal contrast. I defend the method against skeptics who doubt that the contents of experience can be discovered, and I explain how the method may be employed even if one denies that experiences have contents.

Silent thinking is often accompanied by subvocal sayings to ourselves, imagery, emotional feelings, and non-sensory experiences such as familiarity, rightness, and confidence that we can go on in certain ways. Phenomenological materials of these kinds, along with our dispositions to give explanations or draw inferences, provide resources that are sufficient to account for our knowledge of what we think, desire, and so on. We do not need to suppose that there is a distinctive, non-imagistic 'what it is like' to think (...) that p, and a different non-imagistic 'what it is like' to think that q. Nor need we suppose that there is a proprietary 'what it is like' to have one propositional attitude type rather than another. (shrink)

Silent thinking is often accompanied by subvocal sayings to ourselves, imagery, emotional feelings, and non-sensory experiences such as familiarity, rightness, and confidence that we can go on in certain ways. Phenomenological materials of these kinds, along with our dispositions to give explanations or draw inferences, provide resources that are sufficient to account for our knowledge of what we think, desire, and so on. We do not need to suppose that there is a distinctive, non-imagistic ‘what it is like’ to think (...) that p, and a different non-imagistic ‘what it is like’ to think that q. Nor need we suppose that there is a proprietary ‘what it is like’ to have one propositional attitude type rather than another. (shrink)

This paper assesses five main empirical scientific arguments against the reliability of belief formation on the basis of introspecting phenomenal states. After defining ‘reliability’ and ‘introspection’, I discuss five arguments to the effect that phenomenal states are more elusive than we usually think: the argument on the basis of differences in introspective reports from differences in introspective measurements; the argument from differences in reports about whether or not dreams come in colours; the argument from the absence of a correlation between (...) visual imagery ability and the performance on certain cognitive tasks; the argument from our unawareness of our capacity of echolocation; the argument from inattentional blindness and change blindness. I argue that the experiments on which these arguments are based do not concern belief formation on the basis of introspection in the first place or fail to show that it is unreliable, even when limited to introspection of phenomenal states. (shrink)

A number of recent discussions comparing computer simulation and traditional experimentation have focused on the significance of “materiality.” I challenge several claims emerging from this work and suggest that computer simulation studies are material experiments in a straightforward sense. After discussing some of the implications of this material status for the epistemology of computer simulation, I consider the extent to which materiality (in a particular sense) is important when it comes to making justified inferences about target systems on the basis (...) of experimental results. (shrink)

Reviews evidence which suggests that there may be little or no direct introspective access to higher order cognitive processes. Ss are sometimes unaware of the existence of a stimulus that importantly influenced a response, unaware of the existence of the response, and unaware that the stimulus has affected the response. It is proposed that when people attempt to report on their cognitive processes, that is, on the processes mediating the effects of a stimulus on a response, they do not do (...) so on the basis of any true introspection. Instead, their reports are based on a priori, implicit causal theories, or judgments about the extent to which a particular stimulus is a plausible cause of a given response. This suggests that though people may not be able to observe directly their cognitive processes, they will sometimes be able to report accurately about them. Accurate reports will occur when influential stimuli are salient and are plausible causes of the responses they produce, and will not occur when stimuli are not salient or are not plausible causes. (shrink)

I am looking at an apple. The apple has a lot of properties and some, but not all, of these are part of my phenomenology at this moment: I am aware of these properties. And some, but not all, of these properties that I am aware of are part of my perceptual (or sensory) phenomenology. If I am attending to the apple’s color, this property will be part of my perceptual phenomenology. The property of being a granny smith apple from (...) Chile is unlikely to be part of my perceptual phenomenology. Here are two problems for anyone who is interested in conscious experience in general, and perceptual experience in particular: (a) How can we tell which properties are part of our phenomenology and which ones are not? (b) How can we tell which properties are part of our perceptual phenomenology and which ones are part of our non-perceptual phenomenology? I will focus on (b) in this paper. My aim is twofold: I propose a methodology for answering the question of which properties are part of our perceptual phenomenology and I provide an example for how this methodology could be applied. (shrink)

William Lyons presents an original thesis on introspection as self-interpretation in terms of a culturally influenced model. His work rests on a lucid, careful, and critical examination of the transformations that have occurred over the past century in the concepts and models of introspection in philosophy and psychology. He reviews the history of introspection in the work of Wundt, Boring, and William James, and reactions to it by behaviorists Watson, Lashley, Ryle, and Skinner.

Disputes about what is phenomenologically manifest in conscious experience have a way of leading to deadlocks with remarkable immediacy. Disputants reach the foot-stomping stage of the dialectic more or less right after declaring their discordant views. It is this fact, I believe, that leads some to heterophenomenology and the like attempts to found Consciousness Studies on purely third-person grounds. In this paper, I explore the other possible reaction to this fact, namely, the articulation of methods for addressing phenomenological disputes. I (...) suggest two viable methods, of complementary value, which I call “the method of contrast” and “the method of knowability.”. (shrink)

Consider the following argument: when a phenomenon P is observable, any legitimate understanding of P must take account of observations of P; some mental phenomena—certain conscious experiences—are introspectively observable; so, any legitimate understanding of the mind must take account of introspective observations of conscious experiences. This paper offers a (preliminary and partial) defense of this line of thought. Much of the paper focuses on a specific challenge to it, which I call Schwitzgebel’s Challenge: the claim that introspection is so untrustworthy (...) that its indispensability for a genuine understanding of the mind only shows that no genuine understanding of the mind is possible. (shrink)

Routledge is now re-issuing this prestigious series of 204 volumes originally published between 1910 and 1965. The titles include works by key figures such asC.G. Jung, Sigmund Freud, Jean Piaget, Otto Rank, James Hillman, Erich Fromm, Karen Horney and Susan Isaacs. Each volume is available on its own, as part of a themed mini-set, or as part of a specially-priced 204-volume set. A brochure listing each title in the "International Library of Psychology" series is available upon request.

Most ?theories of consciousness? are based on vague speculations about the properties of conscious experience. We aim to provide a more solid basis for a science of consciousness. We argue that a theory of consciousness should provide an account of the very processes that allow us to acquire and use information about our own mental states ? the processes underlying introspection. This can be achieved through the construction of information processing models that can account for ?Type-C? processes. Type-C processes can (...) be specified experimentally by identifying paradigms in which awareness of the stimulus is necessary for an intentional action. The Shallice (1988b) framework is put forward as providing an initial account of Type-C processes, which can relate perceptual consciousness to consciously performed actions. Further, we suggest that this framework may be refined through the investigation of the functions of prefrontal cortex. The formulation of our approach requires us to consider fundamental conceptual and methodological issues associated with consciousness. The most significant of these issues concerns the scientific use of introspective evidence. We outline and justify a conservative methodological approach to the use of introspective evidence, with attention to the difficulties historically associated with its use in psychology. (shrink)

Introspective and phenomenological methods are once again being used to support the use of subjective reports, rather than objective behavioural measures, to investigate and measure consciousness. Objective measures are often seen as useful ways of investigating the range of capacities subjects have in responding to phenomena, but are fraught with the interpretive problems of how to link behavioural capacities with consciousness. Instead, gathering subjective reports is seen as a more direct way of assessing the contents of consciousness. This article explores (...) three different ways of gathering subjective reports that have been discussed in recent literature on consciousness, including immediate retrospection (Schwitzgebel [2007]) and two types of introspective training (Overgaard et al. [2004]; Schwitzgebel [2008]). Although not an exhaustive survey of the range of introspective methods now used, the discussion below highlights a range of general methodological problems with introspective methods, many identified up to a century ago. It is argued that none of the methodological problems established in earlier criticisms of the use of subjective reports have been dealt with, yet are still valid criticisms. Given that this is not the first time proponents of introspective, subjective measures of conscious have failed to answer these criticisms, this raises the question of whether the goal of providing a measure of consciousness is a methodological muddle worth pursuing. (shrink)

Recent philosophy of mind has tended to treat.

A traditional view is that scientific evidence can be produced only by intersubjective methods that can be used by different investigators and will produce agreement. This intersubjectivity, or publicity, constraint ostensibly excludes introspection. But contemporary cognitive scientists regularly rely on their subjects' introspective reports in many areas, especially in the study of consciousness. So there is a tension between actual scientific practice and the publicity requirement. Which should give way? This paper argues against the publicity requirement and against a fallback (...) version of it, viz. that evidence-conferring methods must at least have their reliability publicly validated. (shrink)

A week ago, I heard James Conant give a talk at Tufts, entitled “Two Varieties of Skepticism” in which he distinguished two oft-confounded questions.

Descartes’ Method of Radical Doubt was not radical enough. –A. Marcel (2003, 181) In short, heterophenomenology is nothing new; it is nothing other than the method that has been used by psychophysicists, cognitive psychologists, clinical neuropsychologists, and just about everybody who has ever purported to study human consciousness in a serious, scientific way. –D. Dennett (2003, 22).

Little, Brown, 1992 Review by Glenn Branch on Jul 5th 1999 Volume: 3, Number: 27.

Scientists obtain a great deal of the evidence they use by observingnatural and experimentally generated objects and effects. Much of thestandard philosophical literature on this subject comes from20th century logical positivists and empiricists, theirfollowers, and critics who embraced their issues and accepted some oftheir assumptions even as they objected to specific views. Theirdiscussions of observational evidence tend to focus on epistemologicalquestions about its role in theory testing. This entry follows theirlead even though observational evidence also plays important andphilosophically interesting roles (...) in other areas including scientificdiscovery and the application of scientific theories to practicalproblems. (shrink)

The phenomenal character of perceptual experience involves the representation of colour, shape and motion. Does it also involve the representation of high-level categories? Is the recognition of a tomato as a tomato contained within perceptual phenomenality? Proponents of a conservative view of the reach of phenomenal content say ’No’, whereas those who take a liberal view of perceptual phenomenality say ’Yes’. I clarify the debate between conservatives and liberals, and argue in favour of the liberal view that high-level content can (...) directly inform the phenomenal character of perception. (shrink)

Viewed from a certain perspective, nothing can seem more secure than introspection. Consider an ordinary conscious episode—say, your current visual experience of the colour of this page. You can judge, when reflecting on this experience, that you have a visual experience as of something white with black marks before you. Does it seem reasonable to doubt this introspective judgement? Surely not—such doubt would seem utterly fanciful. The trustworthiness of introspection is not only assumed by commonsense, it is also taken for (...) granted by many of theorists about the mind. Within both philosophy and the science of consciousness it is widely held that introspection is generally reliable, at least with respect to the question of one’s current (or immediately prior) conscious states. Without this assumption, we could not make sense of theorists’ widespread use of introspection, both in support of their own position and to undermine that of their opponents. (shrink)

This textbook on vision reflects the integrated computational approach of modern research scientists, combining psychological, computational and neuroscientific perspectives.

The study of conscious experience per se has not kept pace with the dramatic advances in PET, fMRI and other brain-scanning technologies. If anything, the standard approaches to examining the 'view from within' involve little more than cataloguing its readily accessible components. Thus the study of lived subjective experience is still at the level of Aristotelian science, leading to a widespread scepticism over the possibility of a truly scientific study of conscious experience. Drawing on a wide range of approaches -- (...) from phenomenology to meditation -- The View From Within examines the possibility of a disciplined approach to the study of subjective states. The focus is on the practical issues involved. (shrink)