Over the last 20 years the comparator model for delusions of control has received considerable support in terms of empirical studies. However, the original version clearly needs to be replaced by a model with a much greater degree of sophistication and specificity. Future developments are likely to involve the specification of the role of dopamine in the model and a generalisation of its explanatory power to the whole range of positive symptoms. However, we will still need to explain why symptoms (...) can be so variable and we still do not understand the origin of the most mysterious symptom of all: thought insertion. (shrink)

Abstract: Introspection reveals that one is frequently conscious of some form of inner speech, which may appear either in a condensed or expanded form. It has been claimed that this speech reflects the way in which language is involved in conscious thought, fulfilling a number of cognitive functions. We criticize three theories that address this issue: Bermúdez’s view of language as a generator of second-order thoughts, Prinz’s development of Jackendoff’s intermediate-level theory of consciousness, and Carruthers’s theory of inner speech as (...) a rehearsal of action-schemata. We contend they have problems to account for those cases in which inner speech is fragmentary, and for the difference with those instances in which it appears as more sentence-like. In addition, we present verbal overshadowing as a phenomenon that neither of them can easily explain. Finally, we propose an account in which inner speech is fundamentally silent outer speech and argue that it is more explanatory than the alternatives. (shrink)

We very often discover ourselves engaged in inner speech. It seems that this kind of silent, private, speech fulfils some role in our cognition, most probably related to conscious thinking. Yet, the study of inner speech has been neglected by philosophy and psychology alike for many years. However, things seem to have changed in the last two decades. Here we review some of the most influential accounts about the phenomenology and the functions of inner speech, as well as the methodological (...) problems that affect its study. (shrink)

Unsymbolized thinking—the experience of an explicit, differentiated thought that does not include the experience of words, images, or any other symbols—is a frequently occurring yet little known phenomenon. Unsymbolized thinking is a distinct phenomenon, not merely, for example, an incompletely formed inner speech or a vague image, and is one of the five most common features of inner experience . Despite its high frequency, many people, including many professional students of consciousness, believe that such an experience is impossible. However, because (...) the existence of unsymbolized thinking indicates that much experienced thinking takes place without any experience of words or other symbols, acknowledging the existence of unsymbolized thinking may have substantial theoretical import. (shrink)

I compare Frith and colleagues’ influential comparator account of how the sense of agency is elicited to the multifactorial weighting model advocated by Synofzik and colleagues. I defend the comparator model from the common objection that the actual sensory consequences of action are not needed to elicit the sense of agency. I examine the comparator model’s ability to explain the performance of healthy subjects and those suffering from delusions of alien control on various self-attribution tasks. It transpires that the comparator (...) model needs case-by-case adjustment to deal with problematic data. In response to this, the multifactorial weighting model of Synofzik and colleagues is introduced. Although this model is incomplete, it is more naturally constrained by the cases that are problematic for the comparator model. However, this model may be untestable. I conclude that currently the comparator model approach has stronger support than the multifactorial weighting model approach. (shrink)

There is an increasing amount of empirical work investigating the sense of agency, i.e. the registration that we are the initiators of our own actions. Many studies try to relate the sense of agency to an internal feed-forward mechanism, called the ‘‘comparator model’’. In this paper, we draw a sharp distinction between a non-conceptual level of feeling of agency and a conceptual level of judgement of agency. By analyzing recent empirical studies, we show that the comparator model is not able (...) to explain either. Rather, we argue for a two-step account: a multifactorial weighting process of different agency indicators accounts for the feeling of agency, which is, in a second step, further processed by conceptual modules to form an attribution judgement. This new framework is then applied to disruptions of agency in schizophrenia, for which the comparator model also fails. Two further extensions are discussed: We show that the comparator model can neither be extended to account for the sense of ownership (which also has to be differentiated into a feeling and a judgement of ownership) nor for the sense of agency for thoughts. Our framework, however, is able to provide a unified account for the sense of agency for both actions and thoughts. (shrink)

Carruthers views unsymbolized thinking as and, therefore, as a potential threat to his mindreading-is-prior position. I argue that unsymbolized thinking may involve (non-symbolic) sensory aspects; it is therefore not purely propositional, and therefore poses no threat to mindreading-is-prior. Furthermore, Descriptive Experience Sampling lends empirical support to the view that access to our own propositional attitudes is interpretative, not introspective.

The comparator-model, originally developed to explain motor action, has recently been invoked to explain several aspects of the self. However, in the first place it may not be used to explain a basic self-world distinction because it presupposes one. Our alternative account is based on specific systematic covariation between action and perception. Secondly, the comparator model cannot explain the feeling of ownership of thoughts. We argue—contra Frith and Campbell—that thoughts are not motor processes and therefore cannot be described by the (...) comparator-model. Rather, thoughts can be the triggering cause (intention) for actions. An alternative framework for the explanation of thought insertion in schizophrenics is presented. (shrink)

Intentional action involves both a series of neural events in the motor areas of the brain, and also a distinctive conscious experience that ''I'' am the author of the action. This paper investigates some possible ways in which these neural and phenomenal events may be related. Recent models of motor prediction are relevant to the conscious experience of action as well as to its neural control. Such models depend critically on matching the actual consequences of a movement against its internally (...) predicted effects. However, it remains unclear whether our conscious experience of action depends on a precise matching process, or a retrospective inference that ''I'' must have been responsible for a particular event. We report an experiment in which normal subjects judged the perceived time of either intentional actions, involuntary movements, or subsequent effects (auditory tones) of these. We found that the subject's intention to produce the auditory tone produced an intentional binding between the perceived times of the subject's action and the tone. However, if the intention was interrupted by an imposed involuntary movement, followed by the identical tone, no such binding occurred. The phenomenology of intentional action requires an appropriate predictive link between intentions and effects, rather than a retrospective inference that ''I'' caused the effect. (shrink)

Ordinarily, if you say something like “I see a comet,” you might make a mistake about whether it is a comet that you see, but you could not be right about whether it is a comet but wrong about who is seeing it. There cannot be an “error of identification” in this case. In making a judgement like, “I see a comet,” there are not two steps, finding out who is seeing the thing and finding out what it is that (...) is being seen, so that you could go wrong at either step. The only place to go wrong is in your description of what is being seen. We usually take it that the same point applies to present-tense ascriptions to oneself of psychological states in general. You can get it wrong about which psychological state you are in, but you cannot get it right about the psychological state but wrong about whose psychological state it is. In contrast, in a room full of people, I might hear a noise and conclude, “Bill sneezed,” and in this case I could be wrong either about who it was that sneezed or about whether it was a sneeze, rather than say a death-rattle. (shrink)

This paper is built around a single, simple idea. It is widely agreed that there is a distinctive kind of awareness each of us has of his own bodily actions. This action-awareness is different from any perceptual awareness a subject may have of his own actions; it can exist in the absence of such perceptual awareness. The single, simple idea around which this paper is built is that the distinctive awareness that subjects have of their own mental actions is a (...) form of action-awareness. Subjects’ awareness of their own mental actions is a species of the same genus that also includes the distinctive awareness of bodily actions. More specifically, I claim. (shrink)

Do we think in natural language? Or is language only for communication? Much recent work in philosophy and cognitive science assumes the latter. In contrast, Peter Carruthers argues that much of human conscious thinking is conducted in the medium of natural language sentences. However, this does not commit him to any sort of Whorfian linguistic relativism, and the view is developed within a framework that is broadly nativist and modularist. His study will be essential reading for all those interested in (...) the nature and significance of natural language, whether they come from philosophy, psychology or linguistics. (shrink)

On formal and empirical grounds, the overt form of language cannot be the vehicle that the mind uses for reasoning. Nevertheless, we most frequently experience our thought as "inner speech". It is argued that inner speech aids thought by providing a "handle " for attention, making it possible to pay attention to relational and abstract aspects of thought, and thereby to process them with greater richness. Organisms lacking language have no modality of experience that provides comparable articulation of thought; hence (...) certain kinds of thought very important for human intelligence are simply unavailable to them. (shrink)

We are perceivers, we are thinkers, and we are also agents, bringing about physical events, such as bodily movements and their consequences. What we do tells us, and others, a lot about who we are. On the one hand, who we are determines what we do. On the other hand, acting is also a process of self-discovery and self-shaping. Pivotal to this mutual shaping of self and agency is the sense of agency, or agentive self-awareness, i.e., the sense that one (...) is the agent of an action. (shrink)

In the past dozen years a number of theoretical models of schizophrenic symptoms have been proposed, often inspired by advances in the cognitive sciences, and especially cognitive neuroscience. Perhaps the most widely cited and influential of these is the neurocognitive model proposed by Christopher Frith (1992). Frith's influence reaches into psychiatry, neuroscience, and even philosophy. The philosopher John Campbell (1999a), for example, has called Frith's model the most parsimonious explanation of how self-ascriptions of thoughts are subject to errors of identification. (...) "On reflection, it also seems that this is not just one possible theory; it is the simplest theory which has any prospect of explaining the sense of agency, and we ought to work from it, introducing complications only as necessary" (1999a, p. 612). Not everyone agrees. In their recent analysis of alien voices and inserted thoughts in schizophrenia, Stephens and Graham (2000) offer a critique of Frith. Their criticism, however, although serious, is neither deep nor extensive. They outline three points. First, Frith fails to provide an adequate account of why a subject who experiences thought insertion would misattribute that thought to some other agent. Second, Frith does not clarify the distinction between thought insertion and thought influence. And third, Frith fails to explain how a subject can claim both that he is thinking the thought and that the thought is someone else's thought (Stephens and Graham.. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Spiritual Experience and PsychopathologyMike Jackson and K. W. M. Fulford (bio)AbstractA recent study of the relationship between spiritual experience and psychopathology (reported in detail elsewhere) suggested that psychotic phenomena could occur in the context of spiritual experiences rather than mental illness. In the present paper, this finding is illustrated with three detailed case histories. Its implications are then explored for psychopathology, for psychiatric classification, and for our understanding of (...) the concept of mental illness. It is argued that pathological and spiritual psychotic phenomena cannot be distinguished by 1) form and content alone (as in traditional psychopathology), 2) by their relationship either with other symptoms or with pathological causes (as in psychiatric classification), or 3) by reference to the descriptive criteria of mental illness implied by the “medical” model. The distinction is shown to depend, rather, on the way in which psychotic phenomena themselves are embedded in the values and beliefs of the person concerned. This in turn is shown to have implications for diagnosis (it shows the need for clinicians to attend to the values and beliefs of individual patients), for treatment (it points to a cognitive problem-solving model), and for research in psychopathology (especially as related to the emerging sciences of dynamic brain imaging and cognitive neuroscience).Keywordsfirst rank symptoms, schizophrenia, delusion, hallucination, thought disorder, religious experience, mystical experienceIntroductionThis paper explores some of the conceptual and practical implications of the finding that phenomena which in a medical context would probably be diagnosed as psychotic symptoms, may occur in the context of non-pathological, and indeed essentially benign, spiritual experiences.The existence of non-pathological psychotic experiences of this kind (we will call them “psychotic phenomena” as distinct from “psychotic symptoms”—see also Endnote 1, terminology) was a key finding in a study carried out by one of us (MJ) at the Alister Hardy Research Centre (AHRC) in Oxford. Details are given elsewhere both of the overall empirical findings of the study, including the relationship between spiritual experience and personality variables, and of a hypothetical cognitive problem-solving model of these phenomena (Jackson 1991, and forthcoming a and b). In the present paper, 1) the background to the study is described briefly in relation to earlier work on the possible links between spiritual experience and psychopathology; 2) some of the psychotic phenomena identified are illustrated with three detailed case histories; 3) the significance of these phenomena is reviewed for our understanding respectively of psychopathology, of diagnostic syndromes, and of the concept of mental illness; and 4) some of the practical implications of the study for clinical work and research in psychiatry are indicated.BackgroundIt has long been recognized that there are similarities between spiritual and psychotic experiences. [End Page 41] William James (1902), for example, argued that “in delusional insanity, paranoia as they sometimes call it, we may have a kind of diabolical mysticism, a sort of religious mysticism turned upside down” (426). Other commentators have noted a wide variety of phenomena, such as time distortion, synesthesias, loss of self-object boundaries and the transition from a state of conflict and anxiety to one of sudden “understanding,” all of which are reported in both spiritual and psychotic experiences (Buckley 1981; Watson 1982; Wapnick 1969; and Wootton and Allen 1983).Yet the similarities notwithstanding, the distinction between these two kinds of experience can be crucially important. Spiritual experiences, whether welcome or unwelcome, and whether or not they are psychotic in form, have nothing (directly) to do with medicine (Fulford 1996a). It would be quite wrong, then, to “treat” spiritual psychotic experiences with neuroleptic drugs, just as it is quite wrong to “treat” political dissidents as though they were ill (Fulford, Smirnoff and Snow, 1993). Pathological psychotic experiences, on the other hand, or psychotic symptoms, are by definition a proper object of medical treatment, sometimes even against the wishes of the person concerned. Hence it would be both negligent and, as Wing (1978) put it, morally “repellent,” to leave untreated someone who is genuinely ill (244).Given how much turns on the distinction between spiritual experience and psychopathology, it is perhaps not surprising that scholarly discussion of the relationship between them has at times... (shrink)

Abstract: How it is that one's own thoughts can seem to be someone else's? After noting some common missteps of other approaches to this puzzle, I develop a novel cognitive solution, drawing on and critiquing theories that understand inserted thoughts and auditory verbal hallucinations in schizophrenia as stemming from mismatches between predicted and actual sensory feedback. Considerable attention is paid to forging links between the first-person phenomenology of thought insertion and the posits (e.g. efference copy, corollary discharge) of current cognitive (...) theories. I show how deficits in the subconscious mechanisms regulating inner speech may lead to a 'fractured phenomenology' responsible for schizophrenic patients' reports of inserted thoughts and auditory verbal hallucinations. Supporting work on virtual environments is discussed, and lessons concerning the fixity of delusional belief are drawn. (shrink)

On formal and empirical grounds, the overt form of language cannot be the vehicle that the mind uses for reasoning. Nevertheless, we most frequently experience our thought as "inner speech". It is argued that inner speech aids thought by providing a "handle " for attention, making it possible to pay attention to relational and abstract aspects of thought, and thereby to process them with greater richness. Organisms lacking language have no modality of experience that provides comparable articulation of thought; hence (...) certain kinds of thought very important for human intelligence are simply unavailable to them. (shrink)

In this paper, I investigate in detail one theoretical approach to the symptom of thought insertion. This approach suggests that patients are lead to disown certain thoughts they are subjected to because they lack a sense of active participation in the occurrence of those thoughts. I examine one reading of this claim, according to which the patients’ anomalous experiences arise from a breakdown of cognitive mechanisms tracking the production of occurrent thoughts, before sketching an alternative reading, according to which their (...) experiences have to be explained in terms of a withdrawal, on the part of the patients themselves, from certain forms of active engagement in reasoning. I conclude with a discussion of the relationship between this view and the idea that patients’ reports of thought insertion reflect a situation in which the boundaries between the self and the world have become uncertain. (shrink)

Stephens and Grahamset themselves an apparently modest task, to understand why people who experience alien voices and inserted thoughts do not believe that they themselves are the source of these experiences. However, it soon becomes clear that there are many connected issues here. In eight short chapters, they address the phenomenology and ontology of consciousness, the phenomenology of alien voices, inserted thoughts, obsessive-compulsive thoughts and feelings, and other cases of unusual experience often associated with psychopathology, including brief discussion of multiple (...) personality disorder. They survey some of the main empirical explanations of the phenomenology, set out the shortcomings of these theories, and end by proposing their own schematic account. (shrink)

Experience of agency in patients with schizophrenia involves an interesting dissociation; these patients demonstrate that one can have a thought or perform an action consciously without being conscious of thinking or acting as the motivated agent, author of that thought or of that action. This chapter examines several interesting accounts of this dissociation, and aims at showing how they can be generalized to thought insertion phenomena. It is argued that control theory allows such a generalization; three different comparators need to (...) be distinguished: the sense of subjectivity relies on a comparator in which motivation and emotion play a structuring role. The sense of agency emerges in a system that delivers a rough categorization of self-generated – versus other- generated – actions and mental activities. A third system specializes in the social evaluation of the effects of an action, intention or other thought process, given certain goals in self or in others. (shrink)

Two main approaches can be discerned in the literature on agentive self-awareness: a top-down approach, according to which agentive self-awareness is fundamentally holistic in nature and involves the operations of a central-systems narrator, and a bottom-up approach that sees agentive self-awareness as produced by lowlevel processes grounded in the very machinery responsible for motor production and control. Neither approach is entirely satisfactory if taken in isolation; however, the question of whether their combination would yield a full account of agentive self-awareness (...) remains very much open. In this paper, I contrast two disorders affecting the control of voluntary action: the anarchic hand syndrome and utilization behavior. Although in both conditions patients fail to inhibit actions that are elicited by objects in the environment but inappropriate with respect to the wider context, these actions are experienced in radically different ways by the two groups of patients. I discuss how top-down and bottom-up processes involved in the generation of agentive self-awareness would have to be related in order to account for these differences. (shrink)

How do we know that our own actions belong to us? How are we able to distinguish self-generated sensory events from those that arise externally? In this paper, I will briefly discuss experiments that were designed to investigate these questions. In particularly, I will review psychophysical and neuroimaging studies that have investigated how we recognise the consequences of our own actions, and why patients with delusions of control confuse self-produced and externally produced actions and sensations. Studies investigating the failure of (...) this 'self-monitoring' mechanism in patients with delusions of control will be discussed in the context of the hypothesis that overactivity in the parietal cortex and the cerebellum contribute to the misattribution of an action to an external source (). (shrink)

An examination of verbal hallucinations and thought insertion as examples of "alienated self-consciousness.".

Book description: Contemporary Debates in Philosophy of Mind showcases the leading contributors to the field, debating the major questions in philosophy of mind today. * Comprises 20 newly commissioned essays on hotly debated issues in the philosophy of mind * Written by a cast of leading experts in their fields, essays take opposing views on 10 central contemporary debates * A thorough introduction provides a comprehensive background to the issues explored * Organized into three sections which explore the ontology of (...) the mental, nature of the mental content, and the nature of consciousness. (shrink)

A profoundly arresting integration of the faculties of the mind - of how we think, speak, and see the world. Written with an informality that belies the originality of its insights and the radical nature of its conclusions, this is the author's most important book since his groundbreaking Foundations of Language in 2002.

On formal and empirical grounds, the overt form of language cannot be the vehicle that the mind uses for reasoning. Nevertheless, we most frequently experience our thought as "inner speech". It is argued that inner speech aids thought by providing a "handle " for attention, making it possible to pay attention to relational and abstract aspects of thought, and thereby to process them with greater richness. Organisms lacking language have no modality of experience that provides comparable articulation of thought; hence (...) certain kinds of thought very important for human intelligence are simply unavailable to them. (shrink)

In a pair of recent papers and his new book, Christopher Peacocke (2007, 2008a, 2008b) takes up and defends the claim that our awareness of our own actions is immediate and not perceptually based, and extends it into the domain of mental action.1 He aims to provide an account of action-awareness that will generalize to explain how we have immediate awareness of our own judgments, decisions, imaginings, and so forth. These claims form an important component in a much larger philosophical (...) edifice, with many implications for the philosophy of mind and for epistemology. The present paper advances multiple criticisms of Peacocke's account. In particular, it shows that he has given insufficient grounds for thinking that we have non-perceptual awareness of our own actions; and it shows that the account of action-awareness that he provides does not, in any case, generalize to mental actions of the sort that he intends. (shrink)

How do we know that our own actions belong to us? How are we able to distinguish self-generated sensory events from those that arise externally? In this paper, I will briefly discuss experiments that were designed to investigate these questions. In particularly, I will review psychophysical and neuroimaging studies that have investigated how we recognise the consequences of our own actions, and why patients with delusions of control confuse self-produced and externally produced actions and sensations. Studies investigating the failure of (...) this 'self-monitoring' mechanism in patients with delusions of control will be discussed in the context of the hypothesis that overactivity in the parietal cortex and the cerebellum contribute to the misattribution of an action to an external source (). (shrink)

A profoundly arresting integration of the faculties of the mind - of how we think, speak, and see the world. Written with an informality that belies the originality of its insights and the radical nature of its conclusions this is the author's most important book since his groundbreaking Foundations of Language in 2002.

We often know what we are judging, what we are deciding, what problem we are trying to solve. We know not only the contents of our judgements, decidings and tryings; we also know that it is judgement, decision and attempted problem-solving in which we are engaged. How do we know these things?