Meehan finds fault with a number of my arguments, and proposes that better solutions to the problems I was addressing are available if we adopt a higher-order theory of consciousness. I start with some general remarks on theories of this sort. I connect what I had to say about the A-thesis with different forms of higher-order sense theories, and explain why I ignored higher-order thought theories altogether: there are compelling grounds for thinking they (...) cannot provide a viable account of phenomenal unity in phenomenal terms. Meehan. (shrink)

An overview of higher-order representational theories of consciousness. Representational theories of consciousness attempt to reduce consciousness to “mental representations” rather than directly to neural or other physical states. This approach has been fairly popular over the past few decades. Examples include first-order representationalism (FOR) which attempts to explain conscious experience primarily in terms of world-directed (or first-order) intentional states (Tye 2005) as well as several versions of higher-order representationalism (HOR) which holds (...) that what makes a mental state M conscious is that it is the object of some kind of higher-order mental state directed at M. The primary focus of this entry is on HOR and especially higher-order thought (HOT) theory. The key question that should be answered by any theory of consciousness is: What makes a mental state a conscious mental state? Section 1 introduces the overall representationalist approach to consciousness and briefly discuss Tye’s FOR. Section 2 presents three major versions of HOR: higher-order thought theory, dispositional higher-order thought theory, and higher-order perception theory. In section 3, a number of common and important objections and replies are presented. Section 4 briefly outlines a close connection between HOT theory and conceptualism, that is, the claim that the representational content of a perceptual experience is entirely determined by the conceptual capacities the perceiver brings to bear in her experience. Section 5 examines several hybrid higher-order and “self-representational” theories of consciousness which all hold that conscious states are self-directed in some way. Section 6 addresses the potentially damaging claim that HOT theory requires neural activity in the prefrontal cortex (PFC) in order for one to have conscious states. (shrink)

Higher‐order theories purport to account for the conscious character of such states in terms of higher‐order representations. This chapter focuses on three classes of higher‐order theory of phenomenal consciousness, including inner‐sense theory, actualist higher‐order thought theory, and dispositionalist higher‐order thought theory. All three of these higher‐order theories purport to offer reductive explanations of phenomenal consciousness. Inner‐sense theory has important positive virtues, but faces problems; whereas actualist (...) class='Hi'>higher‐order thought theory avoids those problems, but at the cost of losing the positive virtues. Actualist higher‐order thought theory has the advantage that no special organs or mechanisms need to be postulated. Dispositionalist higher‐order thought theory claims to split the difference, providing an account that has all of the advantages of inner‐sense theory with none of the flaws. The success of dispositionalist higher‐order thought theory is premised upon the existence of dual analog contents. (shrink)

The higher order approach to consciousness attempts to build a theory of consciousness from the insight that a conscious state is one that the subject is conscious of. There is a well-known objection1 to the higher order approach, a version of which is fatal. Proponents of the higher order approach have realized that the objection is significant. They have dealt with it via what David Rosenthal calls a “retreat” (2005b, p. 179) but (...) that retreat fails to solve the problem. (shrink)

Ambitious higher-order theories of consciousness aim to account for conscious states when these are understood in terms of what-it-is-like-ness. This paper considers two arguments concerning this aim, and concludes that ambitious theories fail. The misrepresentation argument against HO theories aims to show that the possibility of radical misrepresentation—there being a HO state about a state the subject is not in—leads to a contradiction. In contrast, the awareness argument aims to bolster HO theories by showing that subjects are (...) aware of all their conscious states. Both arguments hinge on how we understand two related notions which are ubiquitous in discussions of consciousness: those of what-it-is-like-ness and there being something it is like for a subject to be in a mental state. This paper examines how HO theorists must understand the two crucial notions if they are to reject the misrepresentation argument but assert the awareness argument. It shows that HO theorists can and do adopt an understanding—the HO reading—which seems to give them what they want. But adopting the HO reading changes the two arguments. On this reading, the awareness argument tells us nothing about those states there is something it is like to be in, and so offers no support to ambitious HO theories. And to respond to the misrepresentation understood according to the HO reading is to simply ignore the argument presented, and so to give no response at all. As things stand, we should deny that HO theories can account for what-it-is-like-ness. (shrink)

Emotional states of consciousness, or what are typically called emotional feelings, are traditionally viewed as being innately programed in subcortical areas of the brain, and are often treated as different from cognitive states of consciousness, such as those related to the perception of external stimuli. We argue that conscious experiences, regardless of their content, arise from one system in the brain. On this view, what differs in emotional and non-emotional states is the kind of inputs that are processed (...) by a general cortical network of cognition, a network essential for conscious experiences. Although subcortical circuits are not directly responsible for conscious feelings, they provide non-conscious inputs that coalesce with other kinds of neural signals in the cognitive assembly of conscious emotional experiences. In building the case for this proposal, we defend a modified version of what is known as the higher-order theory of consciousness. (shrink)

It is usually taken as given that consciousness involves superior or more elaborate forms of information processing. Contemporary models equate consciousness with global processing, system complexity, or depth or stability of computation. This is in stark contrast with the powerful philosophical intuition that being conscious is more than just having the ability to compute. I argue that it is also incompatible with current empirical findings. I present a model that is free from the strong assumption that consciousness (...) predicts superior performance. The model is based on Bayesian decision theory, of which signal detection theory is a special case. It reflects the fact that the capacity for perceptual decisions is fundamentally limited by the presence and amount of noise in the system. To optimize performance, one therefore needs to set decision criteria that are based on the behaviour, i.e. the probability distributions, of the internal signals. One important realization is that the knowledge of how our internal signals behave statistically has to be learned over time. Essentially, we are doing statistics on our own brain. This ‘higherorder’ learning, however, may err, and this impairs our ability to set and maintain optimal criteria for perceptual decisions, which I argue is central to perception consciousness. I outline three possibilities of how conscious perception might be affected by failures of ‘higher-order’ representation. These all imply that one can have a dissociation between consciousness and performance. This model readily explains blindsight and hallucinations in formal terms, and is beginning to receive direct empirical support. I end by discussing some philosophical implications of the model. (shrink)

One of the distinctive properties of conscious states is the peculiar self- awareness implicit in them. Two rival accounts of this self-awareness are discussed. According to a Neo-Brentanian account, a mental state M is conscious iff M represents its very own occurrence. According to the Higher-Order Monitoring account, M is merely accompanied by a numerically distinct representation of its occurrence. According to both, then, M is conscious in virtue of figuring in a higher-order content. The disagreement (...) is over the question whether the higher-order content is carried by M itself or by a differ- ent state. While the Neo-Brentanian theory is phenomenologically more attractive, it is often felt to be somewhat mysterious. It is argued that the difference between the Neo- Brentanian and Higher-Order Monitoring theories is smaller and more empirical than may initially seem, and that the Neo-Brentanian theory can be readily demystified. These considerations make it prima facie preferable to the Higher-Order Monitoring theory. (shrink)

ABSTRACT I begin by developing a challenge for the Higher-Order Thought variant of Higher-Order representational theories of consciousness. The challenge is to account for the distinctive phenomenal character of visual experience—its presentational character. After setting out the challenge, I articulate a novel form of Higher-Order theory that can account for presentational character—the Map Theory of consciousness. The theory’s distinctive claim is that the relevant higher-order representations have a cartographic format.

The higher-order thought (HOT) theory of consciousness is a reductive representational theory of consciousness which says that what makes a mental state conscious is that there is a suitable HOT directed at that mental state. Although it seems that any neural realization of the theory must be somewhat widely distributed in the brain, it remains unclear just how widely distributed it needs to be. In section I, I provide some background and define some key terms. In (...) section II, I argue against the view that HOT theory should treat first-order (i.e. world-directed) conscious states as requiring prefrontal cortical activity though it is reasonable to suppose that conscious states are realized in the brain. In section III, I then explore some of the key background metaphysical issues involved in understanding the nature of consciousness, such as the debate between realism and idealism as well as the prospects for solving the so-called “hard problem” of consciousness. Some of the differences in question often mirror the traditional differences between Western and Eastern perspectives on the nature of consciousness. Overall, I argue that some form of realism and physicalism is more plausible than the opposing views. I also argue that materialists (and especially HOT theorists) can offer plausible replies to the hard problem. (shrink)

Higher-order theories of consciousness come in many varieties, but all adopt the 'transitivity principle' as a central, explanatory premise. The transitivity principle states that a mental state of a subject is conscious if and only if the subject is aware of it. This higher-order awareness is realized in different ways in different forms of higher-order theory. I argue that empirical studies of metacognition have falsified the transitivity principle by showing that there can be (...) awareness of a mental state without that state's becoming conscious. I present two such studies in detail and argue that the measures they employ cannot be interpreted in a way that would make the results compatible with higher-order theory. Since all versions of the theory rely on the transitivity principle, this entails that all forms of higher-order theory are false. (shrink)

Critics have often misunderstood the higher-order theory (HOT) of consciousness. Here we clarify its position on several issues, and distinguish it from other views such as the global The higher-order theory (HOT) of consciousness has often been misunderstood by critics. Here we clarify its position on several issues, and distinguish it from other views such as the global workspace theory (GWT) and early sensory models (e.g. first-order local recurrency theories). For example, HOT has (...) been criticized for over-intellectualizing consciousness. We show that while higher-order states are cognitively assembled, the requirements are actually considerably less than often presumed. In this sense HOT may be viewed as an intermediate position between GWT and early sensory views. Also, we clarify that most proponents of HOT do not stipulate consciousness as equivalent to metacognition or confidence. Further, compared to other existing theories, HOT can arguably account better for complex everyday experiences, such as of emotions and episodic memories. This makes HOT particularly useful as a framework for conceptualizing pathological mental states. (shrink)

Theories of what it is for a mental state to be conscious must answer two questions. We must say how we're conscious of our conscious mental states. And we must explain why we seem to be conscious of them in a way that's immediate. Thomas Natsoulas distinguishes three strategies for explaining what it is for mental states to be conscious. I show that the differences among those strategies are due to the divergent answers they give to the foregoing questions. Natsoulas (...) finds most promising the strategy that amounts to the higher-order-thought hypothesis that I've defended elsewhere. But he raises a difficulty for it, which he thinks probably can be met only by modifying that strategy. I argue that this is unnecessary. The difficulty is a special case of a general question, the answer to which is independent of any issues about consciousness. So it's no part of a theory of consciousness to address the problem, much less solve it. Moreover, the difficulty seems to have intuitive force only given the picture that underlies the other two explanatory strategies, which both Natsoulas and I reject. (shrink)

ABSTRACTAmbitious Higher-order theories of consciousness – Higher-order theories that purport to give an account of phenomenal consciousness – face a well-known objection from the possibility of ra...

It is widely held that consciousness is partially constituted by a “pre-reflective” self-consciousness. Further, it’s argued that the presence of pre-reflective self-consciousness poses a problem for “higher-order” theories of consciousness. Higher-order theories invoke reflective representation and so do not appear to have the resources to explain pre-reflective self-consciousness. This criticism is rooted in the Heidelberg School’s deep reflection on the nature of self-consciousness, and accordingly, I will label this challenge the (...) “Heidelberg problem.” In this chapter, I will offer a higher-order answer to the Heidelberg problem. Instead of attacking the problem head-on, I’ll argue that the view can explain why there appears to be a Heidelberg problem, even if consciousness is ultimately realized by higher-order representation. But I’ll also argue that the theory has indexical resources to more directly counter the Heidelberg problem. Either way, I hope to show that the higher-order theory survives its trip to Heidelberg. (shrink)

According to higher-order theories of consciousness, a mental state is conscious only when represented by another mental state. Higher-order theories must predict there to be some brain areas (or networks of areas) such that, because they produce (the right kind of) higher-order states, the disabling of them brings about deficits in consciousness. It is commonly thought that the prefrontal cortex produces these kinds of higher-order states. In this paper, I first (...) argue that this is likely correct, meaning that, if some higher-order theory is true, prefrontal lesions should produce dramatic deficits in visual consciousness. I then survey prefrontal lesion data, looking for evidence of such deficits. I argue that no such deficits are to be found, and that this presents a compelling case against higher-order theories. (shrink)

In the interesting and thought-provoking article Grazziano and colleagues argue for their Attention Schema Theory (AST) of consciousness. They present AST as a unification of Global Workspace Theory (GWT), Illusionism, and the Higher-Order Thought (HOT) theory. We argue it is a mistake to equate 'subjective experience,' ad related terms, with dualism. They simply denote experience. Also, as presented, AST does not accurately capture the essence of HOT for two reasons. HOT is presented as a version of strong (...) illusionism, which it isn't, and HOT requires that one be aware of one's mental life, and postulates that his consists in a re-representation of what is occurring at at the lower-order levels. However, the authors deny that AST involves re-representing visual stimuli. We close by proposing an alternative unification: GWT and AST provide crucial accounts of how lower-order states are assembled and maintained, but higher-order theory provides the account of subjective experience. (shrink)

This paper makes a comparison between naturalist and non-naturalist theories of consciousness with respect to their explanatory merits. It focuses on David Rosenthal's higher-order thought theory, arguing that the motives for higher-order theories are based on a confusion of three distinct meanings of the term 'intrinsic'. The explanatory power of HOT theories is compared with that of an alternative nonrepresentational theory, offered as an example of a naturalistic account. The latter is found overall to have (...) more virtues and less shortcomings that the higher-order theory. (shrink)

Peter Carruthers's essays on consciousness and related issues have had a substantial impact on the field, and many of his best are now collected here in revised form. The first half of the volume is devoted to developing, elaborating, and defending against competitors one particular sort of reductive explanation of phenomenal consciousness, which Carruthers now refers to as 'dual-content theory'. Phenomenal consciousness - the feel of experience - is supposed to constitute the 'hard problem' for a scientific (...) world view, and many have claimed that it is an irredeemable mystery. But Carruthers here claims to have explained it. He argues that phenomenally conscious states are ones that possess both an 'analog' intentional content and a corresponding higher-order analog content, representing the first-order content of the experience. It is the higher-order analog content that enables our phenomenally conscious experiences to present themselves to us, and that constitutes their distinctive subjective aspect, or feel.The next two chapters explore some of the differences between conscious experience and conscious thought, and argue for the plausibility of some kind of eliminativism about conscious thinking. Then the final four chapters focus on the minds of non-human animals. Carruthers argues that even if the experiences of animals aren't phenomenally conscious, this needn't prevent the frustrations and sufferings of animals from being appropriate objects of sympathy and concern. Nor need it mean that there is any sort of radical 'Cartesian divide' between our minds and theirs of deep significance for comparative psychology. In the final chapter, he argues provocatively that even insects have minds that include a belief/desire/perception psychology much like our own. So mindedness and phenomenal consciousness couldn't be further apart.Carruthers's writing throughout is distinctively clear and direct. The collection will be of great interest to anyone working in philosophy of mind or cognitive science. (shrink)

According to higher order theories of consciousness, a mental state is conscious when there is a HO state about it. However, some HO states do not seem to be about other existing mental states. It is possible to resolve this problem since targetless HO states resemble HO states that misrepresent but the assumption that HO states always target other existing mental states is at odds with the theory since HO states are not only necessary but also sufficient (...) for phenomenal consciousness according to the theory. Given the sufficiency of the HO states for consciousness, there is a need to understand the emergence of HO states as a non-random phenomenon to avoid the difficulties caused by targetless HO states. I suggest it is possible to develop such an understanding by thinking of HO states as predictive states in accordance with the predictive processing theory of the mind. (shrink)

Rolls defends a higher-order thought theory of phenomenal consciousness, mapping the distinction between conscious and non-conscious states onto a distinction between two types of action and corresponding neural pathways. Only one type of action involves higher-order thought and consequently consciousness. This account of consciousness has implausible consequences for the nature of stimulus-reinforcement learning.

For nearly a decade, David Rosenthal has proposed that a mental state M of a creature C is conscious just in case C has a suitable higher-order thought directed toward M. While this theory has had its share of criticism in recent years, I believe that the real difficulties have been ignored. In this essay, I show that the presence of a higher order is insufficient for conscious experience, even if we suppose that the thought satisfies (...) the constraints that Rosenthal lists . The only way Rosenthal's view could possibly yield sufficient conditions is by requiring that the higher-order thought be suitably causally related to its object. Yet, as I also show, the only causal constraint strong enough to do the job is not only ill-motivated but probably false. (shrink)

All mental states, including thoughts, feelings, perceptions, and sensations, often occur consciously. But they all occur also without being conscious. So the first thing a theory of consciousness must do is explain the difference between thoughts, feelings, perceptions, and sensations that are conscious and those which are not.

Various psychopathologies of self-awareness, such as somatoparaphrenia and thought insertion in schizophrenia, might seem to threaten the viability of the higher-order thought (HOT) theory of consciousness since it requires a HOT about one’s own mental state to accompany every conscious state. The HOT theory of consciousness says that what makes a mental state a conscious mental state is that there is a HOT to the effect that “I am in mental state M” (Rosenthal 2005, Gennaro 2012). (...) In a previous publication (Gennaro 2015), I argued that a HOT theorist can adequately respond to this concern with respect to somatoparaphrenia. Somatoparaphrenia is a “depersonalization disorder” which is characterized by the sense of alienation from parts of one’s body. It is a bizarre type of body delusion where one denies ownership of a limb or an entire side of one’s body. My focus in the chapter, however, is on “inserted thoughts” which is a common symptom of schizophrenia, although it will also be useful to contrast it with somatoparaphrenia. Schizophrenia is a mental disorder which most commonly manifests itself through auditory hallucinations, paranoid or bizarre delusions, or disorganized speech and thinking. Thought insertion is the delusion that some thoughts are not “one’s own” in some sense or are somehow being inserted into one’s mind by someone else. Graham and Stephens (2000), for example, have suggested that thought insertion should be understood as alienated self-consciousness or meta-representation. I argue that HOT theory has nothing to fear from this phenomenon either and can consistently explain what happens in this admittedly unusual case. (shrink)

The massive debate in philosophy and psychology and neuroscience about higher-order theories of consciousness has not adequately distinguished between the following two claims. (Necessary Awareness): For any conscious mental state M and subject S, if S is in M, then S is aware of M. (The Higher-Order Theory): For any conscious mental state M and subject S, if S is in M, then M is conscious because S is aware of M. -/- While I will (...) assume that the first claim is true, I will argue that we should reject higher-order theories of consciousness. We should turn them on their head to go with the following theory: (The Ascending Road): For any conscious mental state M and subject S, if S is in M, then S is aware of M because M is conscious. (shrink)

Among our conscious states are conscious thoughts. The question at the center of the recent growing literature on cognitive phenomenology is this: In consciously thinking P, is there thereby any phenomenology—is there something it’s like? One way of clarifying the question is to say that it concerns whether there is any proprietary phenomenology associated with conscious thought. Is there any phenomenology due to thinking, as opposed to phenomenology that is due to some co-occurring sensation or mental image? In this paper (...) we will present two arguments that a “yes” answer to this question of cognitive phenomenology can be obtained via appeal to the HOT theory of consciousness, especially the version articulated and defended by David Rosenthal. (shrink)

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This paper argues that higher‐order thought (HOT) models of consciousness face serious logical problems. The precise form these problems take varies depending on whether HOT models are understood as attempts to explicate the concept of (intransitive state) consciousness or as attempts to identify the property in virtue of which mental states are (intransitively) conscious. Understood in the former way, HOT models face a problem of circularity. Understood in the latter way, such models face a problem of (...) regress. (shrink)

Abstract: According to a higher-order theory of consciousness, you are in a conscious (psychological) state if and only if you are conscious of being in that state. This paper develops and discusses a Euthyphro dilemma for theories of this sort; that is, a dilemma which asks whether the state is conscious because you are conscious of being in it, or, alternatively, whether you are conscious of being in it because it is conscious. I focus on two different (...) versions of the higher-order theory: the higher-order thought theory, defended by David Rosenthal, Hakwan Lau and Richard Brown, among others, and the higher-order acquaintance theory, defended by Brie Gertler, Martine Nida-Rümelin and David Chalmers, among others. I argue that both versions of the view face a Euthyphro dilemma though the issue takes a different form in each case. (shrink)

Higher Order theories of consciousness have their fair share of sympathisers, but the arguments mustered in their support are—to my mind—unduly persuasive. My aim in this paper is to show that Higher Order theories cannot accommodate the possibility of misrepresentation without either falling into contradiction, or collapsing into a First-Order theory. If this diagnosis is on the right track, then Higher Order theories—at least in the specific versions here considered—fail to give an (...) account of what they set out to explain: what is distinctive of ‘conscious’ phenomena. (shrink)

Higher-order theories account for intransitive consciousness by using the transitive notion ‘awareness-of.’ I argue that this notion implies a form of ‘seeming’ that the higher-order approach requires, yet cannot account for. I show that, if the relevant kind of seeming is declared to be present in all representational states, the seeming in question is objectionably trivialized; while using the higher-order strategy to capture not only intransitive consciousness but also the relevant kind of (...) seeming results in an infinite regress. Finally, highlighting distinctive features of representations that explain why they display seeming amounts to abandoning the higher-order approach altogether. (shrink)

According to what Birch (2022) calls the theory-heavy approach to investigating nonhuman-animal consciousness, we select one of the well-developed theories of consciousness currently debated within contemporary cognitive science and investigate whether animals exhibit the neural structures or cognitive abilities posited by that theory as sufficient for consciousness. Birch argues, however, that this approach is in general problematic because it faces what he dubs the dilemma of demandingness—roughly, that we cannot use theories that are based on the human (...) case to assess consciousness in nonhuman animals and vice versa. We argue here that, though this dilemma may problematize the application of many current accounts of consciousness to nonhuman animals, it does not challenge the use of standard versions of the higher-order thought theory (“HOTT”) of consciousness, according to which a creature is in a conscious mental state just in case it is aware of being in that state via a suitable higher-order thought (“HOT”). We show this in two ways. First, we argue that, unlike many extant theories of consciousness, HOTT is typically motivated by a commonsense, and more importantly, neutral condition on consciousness that applies to humans and animals alike. Second, we offer new empirical and theoretical reasons to think that many nonhuman animals possess the relevant HOTs necessary for consciousness. Considering these issues not only reveals the explanatory power of HOTT and some of its advantages over rival accounts, but also enables us to further extend and clarify the theory. (shrink)