Many who suffer from eating disorders claim that they see themselves as “fat”. Despite decades of research into the phenomenon, behavioural evidence has failed to confirm that eating disorders involve visual misperception of own-body size. I illustrate the importance of this phenomenon for our understanding of perceptual processing, outline the challenges involved in experimentally confirming it, and provide solutions to those challenges.

Two visual phenomena are described in which oculomotor activity (saccades) changes our conscious perception: (1) some geometrical visual illusions disappear when saccades are suppressed, and (2) misperceptions occur in an antisaccade task with attentional precues. The first phenomenon shows that what we consciously perceive depends on how we look. The second phenomena indicates that a saccade itself may remain unconscious together with the accompanying changes of the retinal image.

I expand upon Kristie Dotson's concept of “epistemic violence” by identifying another type of epistemic violence that arises in the context of nonverbal communication. “Emotional misperception,” as I call it, occurs when the following conditions are met: A misreads B's nonlinguistic expression of emotion, owing to reliable ignorance, harming B.

Cells live in dynamic environments that necessitate perpetual adaptation. Since cells have limited resources to monitor external inputs, they are required to maximize the information content of perceived signals. This challenge is not unique to microscopic life: Animals use senses to perceive inputs and adequately respond. Research showed that sensory‐perception is actively shaped by learning and expectation allowing internal cognitive models to “fill in the blanks” in face of limited information. We propose that cells employ analogous strategies and use internal (...) models shaped through the long process of evolutionary adaptation. Given this perspective, we postulate that cells are prone to “misperceptions,” analogous to visual illusions, leading them to incorrectly decode patterns of inputs that lie outside of their evolutionary experience. Mapping cellular misperception can serve as a fundamental approach for dissecting regulatory networks and could be harnessed to modulate cell behavior, a potentially new avenue for therapy. (shrink)

This article compares investigations of the process of vision that were made in early nineteenth-century Britain and the German lands. It is argued that vision studies differed significantly east and west of the North Sea. Most of the German investigators had a medical background and many of them had a firm grasp of contemporary philosophy. In contrast, the British studies on vision emerged from the context of optics. This difference manifested itself in the conceptual tools for the analysis of vision, (...) deception and illusion and shaped the experiments on visual phenomena that were carried out. Nevertheless, both in Britain and in the German lands vision studies were driven by the same impetus, by epistemological concerns with the nature and reliability of knowledge acquisition in experience. The general epistemological conclusions drawn from researches on vision and deception were optimistic. Precisely because mechanisms of deception and illusion could be uncovered, the possibility of acquiring empirical knowledge could be secured. (shrink)

This paper addresses the role of global migration and the nature of national borders within the co-constitution of class and race. We begin with Marx’s critique of the value-form – a critique that rests upon a distinction between the ‘essence’ of social reality and its immediate appearances. The paper elaborates how Marx’s understanding of the emergence of a society based upon generalised commodity production leads to a certain conception of the ‘political state’ and citizenship – and thus borders and national (...) belonging. This reveals the distinctive territorial forms of capitalism vis-à-vis those found in pre-capitalist societies, and moves us away from transhistorical conceptions of borders and the nation-state. In the second half, the paper turns to look at what this conception of borders and migration might mean concretely for how we think about the co-constitution of race and class today. Here the focus is on three crucial aspects of the contemporary world market: (1) the relationship between the cross-border movements of labour and processes of class formation, (2) migration and the determination of the value of labour-power, and (3) coercive and unfree labour. (shrink)

In discussions of perception and its provision of knowledge, it is common to distinguish what one comes to believe on the basis of perception from the distinctively perceptual basis of one's belief. The distinction can be drawn in terms of propositional contents: there are the contents that a perceiver would normally come to believe on the basis of her perception, on the one hand; and there are the contents properly attributed to perception itself, on the other. Consider the content.

The U.S. and Canadian health care systems are more similar than is commonly believed. This article debunks some of the powerful myths about these health care systems and opens up the discussion for greater policy learning from both sides of the border. Cross-border comparisons can yield a number of lessons from common policy challenges such as cost control, physician organization and payment, and the organization of health coverage and services for Native Americans and Indigenous Canadians.

I argue that many standard interpretations of Aristotle suffer from what Cora Diamond calls "the metaphysical spirit". The metaphysical spirit lays down requirements for a given subject in advance of actual investigation; it already knows how ethics, say, or epistemology, must be conducted and what problems must be addressed. Standard readings of Aristotle focus on certain assumptions based not so much on Aristotle's texts as on "metaphysical" assumptions about the nature of the philosophical problems involved. I claim that this is (...) a mistaken approach to Aristotle's philosophy. ;The metaphysical spirit assumes a certain view of the relationship between mind and world that places responding to the skeptic center stage. When Aristotle himself seems unconcerned about the skeptic, commentators construct a response on Aristotle's behalf. I argue that Aristotle is not concerned with the skeptic, and that a proper understanding of his views on perception in the De Anima shows that he adopts a common sense realism that makes such a response unnecessary. Further, focusing on those passages in which Aristotle requires the student of ethics to be already well brought up, I argue that Aristotle is not responding to the moral skeptic in the Nicomachean Ethics. Aristotle's works also raise a general problem about his method, which involves surveying the endoxa : what entitles Aristotle to believe that reflection on endoxa will yield objective truth? I claim that once we see how the common sense realism of the De Anima can be philosophically defensible, Aristotle's method can seem a perfectly reasonable approach to acquiring truth. ;I argue that reflection on Wittgenstein, and contemporary philosophers inspired by him, suggests considering these problems with "the realistic spirit". Rather than attempting to answer the skeptic directly, the realistic spirit tries to understand the metaphysical assumptions which make those concerns appear pressing and permits an intellectually respectable indifference towards the skeptic. Thus, Aristotle's lack of interest towards the skeptic and traditional problems of philosophy is not only intellectually responsible but can even be philosophically enlightening. (shrink)

Perception is riddled with cases of reliable misperception. These are cases in which a perceptual state is tokened inaccurately any time it is tokened under normal conditions. On the face of it, this fact causes trouble for theories that provide an analysis of perceptual content in non-semantic, non-intentional, and non-phenomenal terms, such as those found in Millikan (1984), Fodor (1990), Neander (2017), and Schellenberg (2018). I show how such theories can be extended so that they cover such cases without (...) giving up their core commitments. (shrink)

The paper offers a partial, broad-stroke sketch of visual perception, and argues that certain kinds of normal visual misperceptions are systematic and widespread.

A number of important decision domains, including decisions about hiring, global warming, and weather hazards, are characterized by a global–local incompatibility. These domains involve variables that cannot be observed by a single decision maker (DM) and require the integration of observations from locally available information cues. This paper presents a new bifocal lens model that describes how the structure of the environment can lead to a unique form of overconfidence when generalizing the reliability of the local environment to a global (...) scale. When the local environment does not reliably reflect the global environment, they are incompatible. While local perspectives vary across DMs, global–local incompatibility can be understood using the structure of classical test theory as the difference between (a) perceived estimates of the reliability derived from the local environment and (b) the true reliability of the local environment. I model global–local incompatibility as the difference between the true and estimated reliability when the assumptions of classical test theory are violated. Using a series of case studies and an empirical study, I demonstrate the widespread utility of this framework, and I conclude by discussing implications for cognitive–ecological theory, risk communication, and overconfidence. (shrink)

There are two related points at which J.J. Gibson’s ecological theory of visual perception remains remarkably underspecified: Firstly, the notion of information for perception is not explicated in much detail beyond the claim that it “specifies” the environment for perception, and, thus being an objective affair, enables an organism to perceive action possibilities or “affordances.” Secondly, misperceptions of affordances and perceptual illusions are not clearly distinguished from each other. Although the first claim seems to suggest that any perceptual illusion amounts (...) to the misperception of affordances, there might be some relevant differences between various ways of getting things wrong. In this essay, Gibson’s notion of “specifying” information shall be reconstructed along the lines of Fred Dretske’s relational theory of information. This refined notion of information for perception will then be used to carve out the distinction between perceptual illusions and the misperception of affordances, with some help from the “Empirical Strategy” (developed by Purves et al.). It will be maintained that there are cases where perceptual illusions actually help an organism to correctly perceive an affordance. In such cases, the prima facie misrendered informational relations involved are kept intact by a set of appropriate transformation rules. Two of Gibson’s intuitions shall thus be preserved: the objectivity of informational relations and the empowerment of the organism as an active perceiver who uses those objective relations to his specific ends. (shrink)

We investigate perception of, and responses to, facial expression authenticity for the first time in social anxiety, testing genuine and polite smiles. Experiment 1 found percepti...

A poor understanding of probability may lead people to misinterpret every day coincidences and form anomalistic beliefs. We investigated the relationship between anomalistic beli...

This paper is concerned with the implications of Husserl's phenomenological reformulation of the problem of error. Following Husserl, I argue that the phenomenon of error should not be understood as the accidental failure of a fully constituted cogito, but that it is itself constitutive of the cogito's formation. I thus show that the phenomenon of error plays a crucial role in our self-understanding as unified subjects of experience. In order to unpack this 'hermeneutical function' of error, I focus on three (...) inter-related notions which are recurrently used by Husserl to refer to the central aspects of error apprehension: explosion (Explosion), replacement (Ersatz), and cancellation (Durchstreichung). My discussion, however, does not remain committed to the Husserlian framework as such. This is not only because Husserl's notion of explosion proves itself untenable, but because the Husserlian paradigm does not make room for a linguistic dimension intrinsic, in my view, to the realization of error. Hence, I proceed by reconstructing the Husserlian terms as tropes of realization, as narratological devices in the 'language game' of error. I argue that these hermeneutical devices are necessary for maintaining what Nietzsche would call the self's 'semblance of unity'. The assumption of one single subject is perhaps unnecessary; perhaps it is just as permissible to assume a multiplicity of subjects, whose interaction and struggle is the basis for our thought and our consciousness in general? (Nietzsche, The Will to Power #490). (shrink)

Previous studies have shown that misperceptions and illusory experiences can occur if sensory stimulation is withdrawn or becomes invariant even for short periods of time. Using a perceptual deprivation paradigm, we created a monotonous audiovisual environment and asked participants to verbally report any auditory, visual or body-related phenomena they experienced. The data (analysed using a variant of interpretative phenomenological analysis) revealed two main themes: (1) reported sensory phenomena have different spatial characteristics ranging from simple percepts to the feeling of immersion (...) in a complex multisensory environment and (2) the active contribution of the perceiver where participants report engaging in exploratory processes even when there is nothing to find. Detailed analysis of the qualitative data further showed that participants who reported more perceptual phenomena were more likely to report internal bodily sensations, move more during the experiment and score higher on the Revised Hallucination Scale than those reporting fewer percepts explicitly linking perceptual deprivation to somatic phenomena. The results demonstrate how the variety of sensory experiences induced by perceptual deprivation can give further insight into the factors mediating conscious awareness and may suggest ways in which the brain imposes meaning on the environment under invariant sensory conditions. (shrink)

What are the factors that contribute to (or inhibit) diachronic sound change? While acoustically motivated sound changes are well documented, research on the articulatory and audiovisual-perceptual aspects of sound change is limited. This paper investigates the interaction of articulatory variation and audiovisual speech perception in the Northern Cities Vowel Shift (NCVS), a pattern of sound change observed in the Great Lakes region of the United States. We focus specifically on the maintenance of the contrast between the vowels /ɑ/ and /ɔ/, (...) both of which are fronted as a result of the NCVS. We present results from two experiments designed to test how the NCVS is produced and perceived. In the first experiment, we present data from an articulatory and acoustic analysis of the production of fronted /ɑ/ and /ɔ/. We find that some speakers distinguish /ɔ/ from /ɑ/ with a combination of both tongue position and lip rounding, while others do so using either tongue position or lip rounding alone. For speakers who distinguish /ɔ/ from /ɑ/ along only one articulatory dimension, /ɑ/ and /ɔ/ are acoustically more similar than for speakers who produce multiple articulatory distinctions. While all three groups of speakers maintain some degree of acoustic contrast between the vowels, the question is raised as to whether these articulatory strategies differ in their perceptibility. In the perception experiment, we test the hypothesis that visual speech cues play a role in maintaining contrast between the two sounds. The results of this experiment suggest that articulatory configurations in which /ɔ/ is produced with unround lips are perceptually weaker than those in which /ɔ/ is produced with rounding, even though these configurations result in acoustically similar output. We argue that these findings have implications for theories of sound change and variation in at least two respects: 1) visual cues can shape phonological systems through misperception-based sound change, and 2) phonological systems may be optimized not only for auditory but also for visual perceptibility. (shrink)

This chapter contains sections titled: The Misperception Davidson on Interpretation The Proposal References.

Misperception is part of the human condition. Consider a classic case of coming to confirm that one has had a misperception. On a stroll through the woods you see, in the distance, what seems to be a person. As you draw near, what looked like a person now appears to be a wooden post with a hat on it. On arrival you touch the post to confirm that it is not a person. From a pre-theoretical perspective, what has (...) happened? On your approach you judged that there was a person, based on what you saw. When near, you judged that it was a post and not a person, and then by touch you confirmed that what you initially saw was a misperception.In examining cases of misperception it is important to ask: what role does concept .. (shrink)

This chapter explores some of the many different ways of tending to these various, interacting aspects of prediction error minimization in order to prevent misperception. It turns out there are a number of balances, and probabilistic “knobs” that can be tweaked such as to optimize, or fail to optimize, the representation of the world. For example, there might be trade-offs that allow some amount of misperception in order to efficiently explain away sensory input elsewhere; there might also be (...) trade-offs between accuracy and precision, between high level and low levels of the perceptual hierarchy, and, as focused on at the end of this chapter, there is a crucial balance to get right between passive perceptual inference and active inference. In particular, the workings of the brain are compared to the Bayesian workings of a courtroom. The last sections of the chapter consider how this picture of the prediction error minimization mechanism could apply to aspects of mental illness, in particular delusions in schizophrenia and perceptual disturbances in autism. (shrink)

Visual illusions are systematic misperceptions that can help us glean the heuristics with which the brain constructs visual experience. In a recently discovered visual illusion (the “frame effect”), it has been shown that flashing a stimulus inside of a moving frame produces a large misperception of that stimulus's position. Across two experiments, we investigated a novel illusion (the “split stimulus effect”) where the symmetrical motion of two overlaid frames produces two simultaneous positional misperceptions of a single stimulus. That is, (...) one stimulus is presented but two are perceived. In both experiments, a single red dot was flashed when the moving frames reversed direction, and participants were asked to report how many dots they saw. Naïve participants sometimes reported seeing two dots when only one was presented, indicating spontaneous perception of the illusion. A Bayesian analysis of the population prevalence of this effect was conducted. The dependence of this effect on the frames’ speed, the dot's opacity, spatial attention, as the presence/absence of pre-flash motion (“postdiction”) was also investigated, and the features of this illusion were compared to similar motion position illusions within a predictive processing framework. In demonstrating this illusory “splitting” effect, this study is the first to show that it is possible to be simultaneously aware of two opposing perceptual predictions about a single object and provides evidence of the hyperpriors that limit and inform the structure of visual experience. (shrink)

A common misperception, both within academia and without, is that the premodern, Judeo-Christian picture of the universe was of a small, cramped one. This allowed people to believe that the Earth and its inhabitants were the most important thing in it. But this misfires in several ways: First, the premodern cosmos is only small in comparison to what contemporary science has discovered, not absolutely. Second, the premoderns felt just as insignificant as we do in light of the universe’s size, (...) but we cannot translate this into a scientific or philosophical argument. Third, it assumes that the Judeo-Christian view is that humanity is the most important thing and that God created the universe for us. Fourth, whatever value human beings have in the Judeo-Christian tradition is derivative, based on being created in God’s image, and the size of the universe has no bearing on it. (shrink)

This chapter shows that the embedded view has explanatory power. Inferential accounts are often preferred to competing accounts — for example, to Gibsonian alternatives — because they explain a variety of visual phenomena that are otherwise mysterious. The chapter provides embedded models of visual cases that pose difficulties for direct views. These include cases where vision appears to be inflexible, as in stability, constancy, misperception, and illusions, as well as cases where the visual system displays a measure of flexibility, (...) as in multi-stability. The chapter shows that the embedded view is also compatible with cognitive penetrability. One of the crucial moves is to recognize that the embedded view does not hold that no processing happens between retinal stimulation and visual percepts. It only holds that such processing does not consist of an inference. (shrink)

The first section of this chapter describes seeing and inferring. One perceives and misperceives them as well. This fact of misperception is used as an argument in favour of the inferentiality of perception. The second section examines the Vaíṣsika atomism. The third section explores the whole–part controversy. The fourth section reconstructs the Nyāya argument against representationalism. The fifth section explores the Nyāya argument against sense-datum. The last section discusses memory and hallucination.

The most important challenges to idealism are: (1) the problem of _unusual origins_—no amount of phenomenological potential is sufficient for the existence of ordinary physical things, since we can imagine scenarios (evil demons, envatted brains) that have all the phenomenological potential that characterizes the actual world, but in which there exist few if any of the physical things that actually exist; (2) the problem of _deceptive appearances_:—idealism has no defensible way to distinguish between veridical experiences (like the ones we have (...) in normal waking life) and deceptive experiences (like those that characterize dreams, hallucinations, and misperceptions); and, (3) the problem of _imperceptible things_:—idealism is incompatible with the idea that spacetime contains unobservable objects and events. In Chapter 9, we reply to these objections, arguing that none of them succeeds against a properly formulated idealism. (shrink)

This is the first book-length study in any language to examine in detail and critically assess the second part of Kant's ethics- -an empirical, impure part, which determines how best to apply pure principles to the human situation. Drawing attention to Kant's under-explored impure ethics, this revealing investigation refutes the common and long-standing misperception that Kants ethics advocates empty formalism. Making detailed use of a variety of Kantian texts never before translated into English, author Robert B. Louden reassesses the (...) strengths and weaknesses of Kantian ethics as a whole, once the second part is re-admitted to its rightful place within Kant's practical philosophy. (shrink)

Stereotypes sometimes lead us to make poor judgements of other people, but they also have the potential to facilitate quick, efficient, and accurate judgements. How can we discern whether any individual act of stereotyping will have the positive or negative effect? How Stereotypes Deceive Us addresses this question. It identifies various factors that determine whether or not the application of a stereotype to an individual in a specific context will facilitate or impede correct judgements and perceptions of the individual. It (...) challenges the thought that stereotyping only and always impedes correct judgement when the stereotypes that are applied are inaccurate, failing to reflect social realities. It argues instead that stereotypes that reflect social realities can lead to misperceptions and misjudgements, and that inaccurate but egalitarian social attitudes can therefore facilitate correct judgements and accurate perceptions. The arguments presented in this book have important implications for those who might engage in stereotyping and those who are at risk of being stereotyped. They have implications for those who work in healthcare and those who have mental health conditions. How Stereotypes Deceive Us provides a new conceptual framework-evaluative dispositionalism-that captures the epistemic faults of stereotypes and stereotyping, providing conceptual resources that can be used to improve our own thinking by avoiding the pitfalls of stereotyping, and to challenge other people's stereotyping where it is likely to lead to misperception and misjudgement. (shrink)

Most philosophers of mathematics try to show either that the sort of knowledge mathematicians have is similar to the sort of knowledge specialists in the empirical sciences have or that the kind of knowledge mathematicians have, although apparently about objects such as numbers, sets, and so on, isn't really about those sorts of things as well. Jody Azzouni argues that mathematical knowledge really is a special kind of knowledge with its own special means of gathering evidence. He analyses the linguistic (...) pitfalls and misperceptions philosophers in this field are often prone to, and explores the misapplications of epistemic principles from the empirical sciences to the exact sciences. What emerges is a picture of mathematics both sensitive to mathematical practice, and to the ontological and epistemological issues that concern philosophers. (shrink)

Sufferers of eating disorders often hold false beliefs about their own body size. Such beliefs appear to violate norms of rationality, being neither grounded by nor responsive to appropriate forms of evidence. I defend the rationality of these beliefs. I argue that they are in fact supported by appropriate evidence, emanating from proprioceptive misperception of bodily boundaries. This argument has far‐reaching implications for the explanation and treatment of eating disorders, as well as debates over the relationship between rationality and (...) human psychology. (shrink)

Our concern in this paper lies with a common argument from racial discrimination to realism about races: some people are discriminated against for being members of a particular race (i.e., racial discrimination exists), so some people must be members of that race (i.e., races exist). Error theorists have long responded that we can explain racial discrimination in terms of racial attitudes alone, so we need not explain it in terms of race itself. But to date there has been little detailed (...) discussion of whether it is better to explain racial discrimination in terms of race or in terms of racial attitudes alone. Our goal is to offer a novel and detailed argument in defense of explaining racial discrimination in terms of racial attitudes alone, by attending to the neglected phenomenon of misperception discrimination, which involves differential treatment due to misperceived race. We argue that the discriminatory action in misperception cases must be explained in the same way as cases where (according to the realist) the victim’s race is accurately perceived. Thus, the victim’s actual race cannot provide the best explanation. The main upshot of our argument is that explanatory arguments from racial discrimination to realism about race fail. (shrink)

This book offers a truly interdisciplinary exploration of our patterns of engagement with politics, news, and information in current high-choice information environments. Putting forth the notion that high-choice information environments may contribute to increasing misperceptions and knowledge resistance rather than greater public knowledge, the book offers insights into the processes that influence the supply of misinformation and factors influencing how and why people expose themselves to and process information that may support or contradict their beliefs and attitudes. A team of (...) authors from across a range of disciplines address the phenomena of knowledge resistance and its causes and consequences at the macro- as well as the micro-level. The chapters take a philosophical look at the notion of knowledge resistance, before moving on to discuss issues such as misinformation and fake news, psychological mechanisms such as motivated reasoning in processes of selective exposure and attention, how people respond to evidence and fact-checking, the role of political partisanship, political polarization over factual beliefs, and how knowledge resistance might be counteracted. This book will have a broad appeal to scholars and students interested in knowledge resistance, primarily within philosophy, psychology, media and communication, and political science, as well as journalists and policymakers. The Open Access version of this book, available at www.taylorfrancis.com, has been made available under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 license. (shrink)

Alarmist narratives about online misinformation continue to gain traction despite evidence that its prevalence and impact are overstated. Drawing on research examining the use of big data in social science and reception studies, we identify six misconceptions about misinformation and highlight the conceptual and methodological challenges they raise. The first set of misconceptions concerns the prevalence and circulation of misinformation. First, scientists focus on social media because it is methodologically convenient, but misinformation is not just a social media problem. Second, (...) the internet is not rife with misinformation or news, but with memes and entertaining content. Third, falsehoods do not spread faster than the truth; how we define (mis)information influences our results and their practical implications. The second set of misconceptions concerns the impact and the reception of misinformation. Fourth, people do not believe everything they see on the internet: the sheer volume of engagement should not be conflated with belief. Fifth, people are more likely to be uninformed than misinformed; surveys overestimate misperceptions and say little about the causal influence of misinformation. Sixth, the influence of misinformation on people’s behavior is overblown as misinformation often “preaches to the choir.” To appropriately understand and fight misinformation, future research needs to address these challenges. (shrink)

After reviewing factors implicated in the generation of delusional beliefs, we conclude that whilst a perceptual aberration coupled with a particular type of attri‐butional bias may be necessary to explain the specific thematic content of a bizarre delusion, neither of these factors, whether in isolation or in combination, is sufficient to explain the presence of delusional beliefs. In contrast to bias models (theories which explain delusion formation in terms of extremes of normal reasoning biases), we advocate a deficit model of (...) delusion formation–that is, delusions arise when the normal cognitive system which people use to generate, evaluate, and then adopt beliefs is damaged. Mere bias we think inadequate to explain bizarre delusions which defy commonsense and persist despite overwhelming rational counter‐argument. In particular, we propose that two deficits must be present in the normal cognitive system to explain bizarre delusions: (1) there must be some damage to sensory and/or attentional‐orient‐ing mechanisms which causes an aberrant perception–this explains the bizarre content of the causal hypothesis generated to explain what is happening; and (2) there must also be a failure of normal belief evaluation–this explains why a hypothesis, implausible in the light of general commonsense, is adopted as belief. This latter deficit occurs, we suggest, when an individual is incapable of suspending the natural favoured status of direct first‐person evidence in order to critically evaluate hypotheses, given equal pri‐ority whether based on direct or indirect sources of information. In contrast, delusions with ‘ordinary’ content may arise when a single deficit of normal belief evaluation occurs in the context of an extreme (but normal) attentional bias, thus causing failure to critically evaluate hypotheses based on misperceptions and misintrepretations of ambiguous (but ordinary) first‐person experience. (shrink)

How can we reconcile representationalism about phenomenal character — the view that the phenomenal character of experiences is fixed by their representational content — with the view that how things appear to different subjects, and so the phenomenal character of their experiences of them, can differ without there being any misperception? That is, how can we reconcile representationalism with the possibility of ‘spectrum inversion?’ One view says that what in the first instance are represented by perceptual experiences are ‘appearance (...) properties,’ which things have in virtue of producing or being disposed to produce experiences of certain sorts, and that different perceivers can perceive the same objective property, e.g. the same color, by perceiving and representing different appearance properties. Here, this is replaced by the view that properties like colors have multiple qualitative characters, and that perceivers with somewhat different perceptual systems can be such that they perceive the same property color by being sensitive to different qualitative characters of that property, and represent it by representing different qualitative characters. (shrink)

1. The “puzzle” Physical objects are coloured: roses are red, violets are blue, and so forth. In particular, physical objects have fine-grained shades of colour: a certain chip, we can suppose, is true blue (unique, or pure blue). The following sort of scenario is commonplace. The chip looks true blue to John; in the same (ordinary) viewing conditions it looks (slightly) greenish-blue to Jane. Both John and Jane are “normal” perceivers. Now, nothing can be both true blue and greenish-blue; since (...) the chip is true blue, it is not greenish-blue. Hence Jane, unlike John, is misperceiving the chip. Generalizing, the conclusion is that there is widespread misperception of fine-grained shades. According to Tye (2006), and Cohen, Hardin, and McLaughlin (2006), the previous paragraph amounts to a paradox: an apparently unacceptable conclusion has been drawn from apparently acceptable premises via apparently acceptable reasoning. (See also Hawthorne and Kovakovich 2006, 180-1.) Tye swallows the conclusion, aided by a dose of evolutionary speculation. Hardin (1988), on the other hand, rejects the first premise, and denies that physical objects are coloured. Cohen (2004) and McLaughlin (2003) claim that both Jane and John have the colour of the chip right. Our opening paragraph concealed a crucial parameter. In fact, the chip looks greenish-blue-relative-to- circumstances-C to Jane, and true-blue-relative-to-circumstances-C* to John, and the chip has both these relativized colours.1 All this ingenious philosophizing would be in vain, of course, if the conclusion of the opening paragraph were not puzzling or problematic. So, why is it supposed to be? According to Tye, the conclusion is puzzling because John and Jane are both “normal perceivers” (xx). He seems to think that it is (prima facie) plausible to assume.. (shrink)