Louis Sass - Phenomenological Psychopathology and the Self
Louis Sass is a clinical psychologist, philosopher, and leading figure in phenomenological psychopathology whose work reformulates the structural understanding of schizophrenia spectrum disorders. Developing the Ipseity-Disturbance Model (IDM) alongside Danish psychiatrist Josef Parnas, Sass challenges mainstream psychiatric dogmas that caricature schizophrenia as an emotional deficit, regression to primitivity, or mere neurocognitive dysfunction. Instead, Sass demonstrates that schizophrenia is fundamentally a disorder of the minimal self (ipseity)—the tacit, pre-reflective first-person foundation of conscious awareness. Driven by the twin complementary dynamics of hyperreflexivity (exaggerated self-monitoring) and diminished self-affection (loss of intrinsic self-presence), Sass bridges clinical psychiatry with continental philosophy (Martin Heidegger, Edmund Husserl, Maurice Merleau-Ponty, Ludwig Wittgenstein) and modernist aesthetics, illuminating the profound isomorphism between schizophrenic experience and 20th-century avant-garde literature and art.

1. The Phenomenological Critique of Mainstream Psychiatry
For more than a century, classical psychiatry and psychoanalysis operated under what Louis Sass terms the primitivist or deficit model of schizophrenia:
- The Primitivist Fallacy: Beginning with Emil Kraepelin (dementia praecox), Eugen Bleuler, and Sigmund Freud, severe psychosis was conceptualized as an archaic regression: a collapse of higher cortical reasoning into primitive, infantile, or pre-logical primary-process mentation.
- The Deficit View: Contemporary cognitive neuropsychiatry frequently reduces schizophrenia to a bundle of functional subtractions—working-memory deficits, executive dysfunction, or cognitive blunting.
In his seminal monograph Madness and Modernism: Insanity in the Light of Modern Art, Literature, and Thought (1992), Sass systematically overturns this orthodoxy.[1] Drawing on phenomenological epistemology and intensive patient self-reports (such as Daniel Paul Schreber and Friedrich Hölderlin), Sass argues that schizophrenic consciousness is not marked by emotional chaotic abandonment or intellectual deficiency, but by hyper-rationality, hyper-lucidity, and an acute overdrive of detached self-monitoring.[1:1]
┌─────────────────────────────────────────────────────────────────────────────┐
│ CRITIQUE OF SCHIZOPHRENIC PSYCHOPATHOLOGY │
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┌─────────────────────────────┴─────────────────────────────┐
▼ ▼
┌─────────────────────────────────┐ ┌─────────────────────────────────┐
│ Classical Deficit Model │ │ Phenomenological Model (Sass) │
│ - Cognitive regression │ VS │ - Hyper-reflexive lucidity │
│ - Primitive / archaic mentation │ │ - Detached intellectualization │
│ - Emotional dysregulation / chaos│ │ - Minimal self (*ipseity*) loss │
│ - Loss of intellectual capacity │ │ - Left-hemisphere hyper-analysis│
└─────────────────────────────────┘ └─────────────────────────────────┘
This thesis directly intersects with the neuropsychological formulations of Iain McGilchrist in The Master and His Emissary and The Matter With Things.[2] As McGilchrist observes, schizophrenia represents the ultimate pathology of an isolated, hyperactive left cerebral hemisphere: a mechanistic, hyper-reflective, decontextualizing gaze that dissects the living, holistic world into frozen, geometric, and alien fragments.
2. The Ipseity-Disturbance Model (IDM)
Formulated by Louis Sass and Josef Parnas, the Ipseity-Disturbance Model identifies schizophrenia spectrum conditions as fundamentally rooted in a disruption of the minimal self (ipseity, from the Latin ipse, meaning "self" or "itself").[3]
In healthy human existence, consciousness is characterized by pre-reflective self-awareness: an implicit, tacit, non-thematic sense of "mineness" (Jemeinigkeit, as articulated by Martin Heidegger) that accompanies every thought, perception, and bodily movement without requiring explicit attention.[3:1] In schizophrenia, this foundational substrate fractures across three mutually reinforcing structural dimensions:
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│ Minimal Self / Ipseity │
│ (Pre-reflective Self-Awareness) │
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┌─────────────────────┴─────────────────────┐
│ STRUCTURAL FRACTURE IN SCHIZOPHRENIA │
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▼ ▼ ▼
┌────────────────────────┐ ┌────────────────────────┐ ┌────────────────────────┐
│ Hyperreflexivity │ │Diminished Self-Affection│ │Loss of Natural Grip/Hold│
│ Tacit processes become │◄──►│ Implicit "mineness" │◄──►│ Common-sense background│
│ explicit alien objects │ │ thins into vacancy │ │ of world evaporates │
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A. Hyperreflexivity
Hyperreflexivity is the exaggerated, involuntary turning of attention onto cognitive, somatic, or perceptual processes that normally operate quietly in the tacit background of experience.[4]
- Operative vs. Automatic Hyperreflexivity: While an intellectual can intentionally adopt a detached, hyperreflexive stance during philosophical contemplation, the schizophrenic subject is subject to automatic hyperreflexivity: the involuntary objectification of their own mental processes.
- The Objectifying Gaze: Bodily actions (swallowing, blinking, walking) and cognitive movements (inner monologue, intentional acts) lose their effortless transparency. Instead of looking through perception out into the world, the patient's focus ricochets back onto the internal perceptual apparatus itself.
- The "Truth-Taking Stare": Perception loses its pragmatic embedding. A visual object (a doorknob, a chair, a passerby's shoe) is gazed upon with intense, decontextualized lucidity, detached from its utilitarian function, appearing uncanny (unheimlich), hyper-distinct, and charged with ominous, unnamable significance (aligning directly with Klaus Conrad's concept of Trema and apophany in Apophenia).[1:2]
B. Diminished Self-Affection (Diminished Self-Presence)
Self-affection (auto-affection) refers to the immediate, non-observational feeling of existing as a living, embodied subject. In schizophrenia, this experiential anchor undergoes profound attenuation:
- Erosion of Mineness: Inner experiences lose their primary subjective signature. The individual no longer feels immediately that they are the author of their thoughts, the originator of their movements, or the subject of their feelings.
- First-Rank Symptoms Explained: Classic Schneiderian first-rank symptoms—such as thought insertion, thought broadcast, somatic passivity, and delusions of external control—are not bizarre cognitive beliefs grafted onto normal perception; they are direct phenomenological articulations of diminished self-affection.[3:2] When a spontaneous thought arises without its tacit background feeling of subjective "mineness," it is experienced as an alien, intruding entity placed inside the brain by a foreign agency.
C. Disturbed World-Grip (Verlust der natürlichen Selbstverständlichkeit)
Hyperreflexivity and diminished self-affection systematically dismantle what German psychiatrist Wolfgang Blankenburg designated the loss of natural self-evidence (Verlust der natürlichen Selbstverständlichkeit).[5]
- Erosion of the Common-Sense Habitus: Normal human engagement rests upon a sea of shared, implicit social assumptions, pragmatics, and somatic intuitions (Alfred Schütz (1899–1959)). The patient on the schizophrenia spectrum loses this unwritten "grid" of everyday reality.
- Geometric Bewilderment: Basic social interactions, vocal inflections, and conversational pauses—which healthy individuals navigate instinctively—must be explicitly calculated, evaluated, and negotiated like complex algebraic formulas, creating intense cognitive exhaustion and profound alienation.
3. Structural Comparison: Models of Schizophrenic Experience
| Analytical Dimension | Classical Psychiatric Deficit Model | Phenomenological Psychopathology (Sass & Parnas) |
|---|---|---|
| Primary Etiological Locus | Executive dysfunction; frontal lobe hypoactivity; cognitive deficit. | Structural collapse of minimal selfhood (ipseity disturbance). |
| Cognitive Stance | Pre-logical, primitive regression; childish cognitive decay. | Hyperreflexive detachment; hyper-intellectualized, alienated lucidity. |
| Perceptual Experience | Sensory distortion; chaotic hallucinatory flooding. | Decontextualized objectification; "truth-taking stare"; hyper-salience. |
| Status of Delusion | False, mistaken empirical beliefs about physical reality. | Solipsistic stances; expressive existential responses to an altered world-horizon. |
| Passivity Phenomena (Thought Insertion) | Cognitive breakdown in source-monitoring heuristics. | Manifestation of diminished self-affection (mineness has evaporated). |
| Relationship to Modernism | Pathological, degraded cultural decay. | Deep aesthetic and epistemological isomorphism with avant-garde modernism. |
4. Madness and Modernism: Aesthetic and Cultural Isomorphisms
In Madness and Modernism, Sass puts forward one of the most provocative interdisciplinary hypotheses in contemporary humanities: that the cognitive and experiential world of schizophrenia shares profound structural isomorphisms with 20th-century modernist and avant-garde culture.[1:3]
Sass does not claim that modernist artists were clinically schizophrenic, nor does he romanticize psychosis as mere artistic creativity. Rather, he demonstrates that both modernism and schizophrenia reflect a shared historical and philosophical crisis of hyper-reflexivity, alienation from the life-world, and the collapse of the Cartesian spectator-self.[1:4]
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│ THE ISOMORPHISM: SCHIZOPHRENIA & MODERNISM │
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▼ ▼ ▼
┌─────────────────────────┐ ┌─────────────────────────┐ ┌─────────────────────────┐
│ De-automatization / │ │ Geometric Spatialization│ │ Breakdown of Narrative │
│ Language Alienation │ │ & Hyper-Articulated Form│ │ & The Architectural Void│
│ - Kafka's estrangement │ │ - De Chirico's arcades │ │ - Vidler's uncanny spaces│
│ - Beckett's paralysis │ │ - Magritte's objects │ │ - Lacanian symbolic slit│
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A. De-automatization and Linguistic Detachment
In ordinary life, language and perception are transparent: we attend to the meaning of a sentence, not the arbitrary visual geometry of the letters or the physiological vibration of the vocal cords. Modernist literature and schizophrenia execute a violent de-automatization of these signs:
- In Franz Kafka (1883-1924), bodily embodiment becomes an absurd, unmanageable apparatus (The Metamorphosis), while legal and bureaucratic institutions operate with opaque, impenetrable, circular logic (The Trial).
- In the prose of Samuel Beckett and the stream-of-consciousness of Virginia Woolf (particularly Septimus Warren Smith's psychological fragmentation in Mrs Dalloway), inner monologue ceases to be a personal sanctuary and becomes a relentless, foreign voice chattering in an unanchored mind.
B. Spatialization and Hyper-Articulated Stillness
In visual art, the schizophrenic's "truth-taking stare" finds its exact aesthetic mirror in the Metaphysical Art of Giorgio de Chirico (1888-1978) and the surrealist disjunctions of René Magritte:
- De Chirico's Metaphysical Panoramas: The hyper-lucid, desolate Italian piazzas, elongated shadows, faceless mannequins, and frozen clocks embody the eerie quietude of Trema—the ominous suspension where the world appears entirely staged, silent, and alienated from human warmth.
- Magritte's Ruptures: By detaching common objects from their everyday functional context (e.g., an eye displaying a cloudy sky, a pipe declared not to be a pipe), Magritte dismantles the tacit perceptual contract, forcing the viewer into the identical hyperreflexive vertigo that stalks the prodromal schizophrenic.
- The Architectural Uncanny: As analyzed by Anthony Vidler-The Architectural Uncanny, modern architectural spaces can manifest the psychological uncanny (unheimlich)—where the domestic home (Heim) ceases to provide ontological shelter, turning into a geometric, sterile, and claustrophobic surveillance apparatus.
5. Delusion, Solipsism, and Wittgenstein
In The Paradoxes of Delusion: Wittgenstein, Schreber, and the Schizophrenic Mind (1994), Sass turns to the late philosophy of Ludwig Wittgenstein to resolve one of the central enigmas of psychiatric practice: the contradictory nature of psychotic delusions.[6]
The Phenomenon of "Double Bookkeeping"
Traditional psychiatry views delusions as factual errors: false beliefs maintained despite overwhelming empirical counter-evidence. However, Sass points out that schizophrenic patients frequently exhibit what Eugen Bleuler termed double bookkeeping (doppelte Buchführung):[6:1]
- A patient may adamantly claim to be the omnipotent Emperor of the Solar System or declare that the ward food is poisoned with arsenic, yet simultaneously eat their dinner peacefully, queue politely for their morning medication, and ask the nurse for a clean pair of socks.
- If the patient genuinely held their delusion as an ordinary empirical belief, their behavior would be radically different. Why don't they mobilize armies or refuse the "poisoned" tray?
Delusion as Solipsistic Grammar
Deploying Wittgenstein’s critique of solipsism and private language from Philosophical Investigations and the Tractatus, Sass demonstrates that schizophrenic delusions are not mistaken empirical propositions occurring within our shared, public language-game; rather, they are solipsistic meta-stances:[6:2]
- The patient lives in an altered, self-enclosed experiential horizon where the boundary between the internal mind and the external world has collapsed into a private theater.
- Delusional statements are not factual assertions about objects in the world; they are expressions of an altered ontological perspective. The patient experiences reality as if it were a cosmic stage set or a projection constructed exclusively around their solitary gaze.
6. Clinical Operationalization: The EASE Scale
The clinical utility of Sass and Parnas’s work culminated in the development of the EASE (Examination of Anomalous Self-Experience) scale in 2005.[7] Co-developed with Birgitte Møller, Julie Nordgaard, and Lennart Jansson, the EASE is a semi-structured phenomenological interview protocol specifically designed to detect early, sub-clinical disturbances of ipseity during the prodromal and ultra-high-risk (UHR) phases of schizophrenia.[7:1]
The EASE categorizes anomalous self-experiences across five structural domains:
- Cognition and Stream of Consciousness: Thought interference, thought pressure, loss of thought intentionality, and spatialization of thoughts (feeling thoughts taking up physical volume in the head).
- Self-Awareness and Presence: Diminished sense of basic self, feeling like an automaton, loss of the center of gravity of consciousness, and feeling radically distinct from other human beings.
- Bodily Experiences: Somatic depersonalization, feeling one's limbs are robotic or foreign, morphologic changes, and disruption of automatic motor routines.
- Demarcation and Transitivism: Permeability of the ego boundaries, confusion between one's own mind and the thoughts of others, and feeling observed through inanimate objects.
- Existential Reorientation: Primary solipsistic attitudes, feeling the world is an artificial simulation or theatrical play, and preoccupation with private philosophical or metaphysical enigmas.
By shifting clinical focus away from late-stage florid hallucinations and delusions toward subtle, core distortions in minimal self-awareness, the EASE has revolutionized early psychiatric intervention and differential diagnosis across Europe and international phenomenological psychiatry.
🎴 Interactive Web Practice (Comprehension Check)
Question 1 (Core Mechanics of the IDM): How do hyperreflexivity and diminished self-affection operate as complementary, circular processes in the Ipseity-Disturbance Model of schizophrenia?
Answer: In the Ipseity-Disturbance Model (IDM) formulated by Louis Sass and Josef Parnas, hyperreflexivity and diminished self-affection are not isolated symptoms, but two complementary sides of the same structural fracture in the minimal self (*ipseity*). Hyperreflexivity operates by turning awareness inward, transforming tacit, pre-reflective background processes (such as the kinesthetics of breathing, bodily motion, or the emergence of thoughts) into explicit, objectified targets of conscious monitoring. Simultaneously, diminished self-affection entails an attenuation of the foundational sense of "mineness" (*Jemeinigkeit*) that normally permeates all subjective experience. When tacit mentation is objectified via hyperreflexivity, it is stripped of its implicit subjectivity; conversely, as the tacit sense of self-presence fades, mental events lose their personal anchor, forcing the conscious ego to monitor them from a detached, externalized perspective. This circularity explains passivity phenomena such as thought insertion: a spontaneous thought, lacking the implicit feeling of self-affection and subjected to hyperreflexive scrutiny, is experienced as an alien, mechanical object placed into consciousness by an external agency.
Question 2 (Critique of the Deficit Model & Modernism): Why does Louis Sass reject the traditional psychiatric characterization of schizophrenia as an archaic or primitive mental regression, and how does he link schizophrenic phenomenology to modernist aesthetics?
Answer: Classical psychiatry (Kraepelin, Bleuler) and psychoanalysis (Freud) framed schizophrenia through a "primitivist" deficit model, viewing psychosis as an emotional regression to infantile, instinctual, or pre-rational thinking. Sass rejects this framework, arguing that schizophrenic consciousness is characterized by the exact opposite: an extreme state of hyper-rationality, hyper-lucidity, and detached intellectualization. The patient does not suffer from an excess of raw, Dionysian emotion, but from an alienated, hyper-analytical posture where the tacit, common-sense background of everyday life is replaced by cold geometric scrutiny (mirroring Iain McGilchrist's isolated left-hemisphere cognition). Sass links this directly to modernist and avant-garde art and literature (such as Kafka, Beckett, de Chirico, and Magritte), which similarly break with unreflective, common-sense realism through deliberate de-automatization, linguistic alienation, perspectival fragmentation, and the spatialization of time. Both modernism and schizophrenia represent a profound structural crisis of the spectator-self confronted with an ungrounded, hyper-lucid, and uncanny reality.
Question 3 (Delusion and Wittgensteinian Double Bookkeeping): How does Sass utilize Ludwig Wittgenstein's philosophy to explain the psychiatric phenomenon of "double bookkeeping" in schizophrenic delusions?
Answer: "Double bookkeeping" refers to the clinical paradox where psychotic patients express grandiose or catastrophic delusions (e.g., asserting that they are the supreme ruler of the cosmos or that their blood has been replaced with poison) while simultaneously living out ordinary, pragmatic daily routines without contradiction (e.g., peacefully waiting in line for a meal or sweeping the hospital floor). If delusions were merely mistaken empirical beliefs within our standard language-game, the patient's physical actions would logically conform to their stated beliefs. Using Ludwig Wittgenstein's critique of private language and solipsism, Sass demonstrates that schizophrenic delusions are not faulty empirical claims about objects in a shared external world; instead, they represent altered, solipsistic ontological frameworks. The patient operates within a bifurcated reality: an idiosyncratic, private theater of consciousness wherein the delusion operates as a symbolic, solipsistic stance, existing alongside—rather than directly confronting—the mundane, practical demands of the shared socio-physical environment.
Resonant Notes
The following notes in the vault share direct thematic, phenomenological, and cognitive connections with Louis Sass's clinical and philosophical framework:
🔴 Phenomenological Psychopathology, Ipseity & Consciousness
- Martin Heidegger — Heidegger's fundamental ontology—specifically In-der-Welt-sein (being-in-the-world), Befindlichkeit (attunement), and Jemeinigkeit (mineness)—provides the primary philosophical scaffolding Sass deploys to articulate the collapse of pre-reflective ipseity in schizophrenia.
- Jacques Lacan — Lacan's psychoanalytic conception of psychosis as the foreclosure (Verwerfung) of the Name-of-the-Father and the rupture of the Symbolic order parallels Sass's phenomenological account of the collapse of shared common-sense grammar and the emergence of the unmediated Real.
- Default Mode Network (DMN) — Provides the neurobiological architecture of self-referential processing and internal mentation; functional disruption within midline DMN hubs and its decoupling from task-positive networks grounds Sass's phenomenological description of ipseity disturbance and thought insertion.
- Aldous Huxley's Heaven and Hell (1956) — Huxley's analysis of the "Infernal Antipodes" and negative visionary transfiguration mirrors Sass's account of hyperreflexive psychosis, wherein ordinary perceptual objects undergo terrifying, claustrophobic intensification and somatic alienation.
- Carl Gustav Jung — Jung's early clinical research into dementia praecox and autonomous feeling-toned complexes provides a depth-psychological counterpoint to Sass's structural phenomenology of ego disintegration.
🟡 Modernism, Aesthetics & The Uncanny
- Giorgio de Chirico (1888-1978) — De Chirico's Metaphysical paintings—featuring desolate, geometrically rigid Italian plazas, hyper-articulated stillness, and faceless mannequins—visually materialize the "truth-taking stare," Trema, and spatial hyper-lucidity analyzed in Madness and Modernism.
- Franz Kafka (1883-1924) — Kafka's masterworks dramatize the hyperreflexive alienation of embodiment (The Metamorphosis) and the opaque, unapproachable machinery of bureaucratic judgment (The Trial), providing the ultimate literary manifestation of Sass's ipseity disturbance.
- Freud's The Uncanny (Das Unheimliche) — Freud's aesthetic analysis of das Unheimliche—the terrifying return of the estranged familiar—articulates the affective atmosphere of the schizophrenic prodrome, where domestic life collapses into an ominous, staged spectacle.
- Anthony Vidler-The Architectural Uncanny — Vidler's architectural critique explores how modern built environments induce disorientation and spatial estrangement, directly mirroring the schizophrenic's loss of environmental dwelling and ontological shelter.
- René Magritte — Magritte's deliberate visual sabotages of everyday objects and linguistic labels (The Treachery of Images) visually execute the de-automatization and semantic severance that Sass identifies as central to both modernist aesthetics and schizophrenia.
- Virginia Woolf — Woolf's interior stream-of-consciousness and poignant portrayal of Septimus Warren Smith's shell-shocked psychotic breakdown in Mrs Dalloway offer a pristine literary case study of hyper-attuned sensory overload and self-alienation.
- Travis Bickle — Provides a cinematic and psychological study of schizotypal hyperreflexivity; Travis's obsessive self-monitoring, ritualized somatic drills, and acute detachment from common-sense social codes demonstrate the sub-clinical landscape of ipseity disturbance.
- Don DeLillo Major Themes Analysis — DeLillo's postmodern fiction explores characters engulfed by media-saturated landscapes, where everyday signage and consumer artifacts freeze into detached, hyper-salient icons of dread.
🟢 Cognitive Architecture, Perception & Philosophy of Mind
- Ludwig Wittgenstein — Wittgenstein's critique of private language, language-games, and solipsism in Philosophical Investigations supplies Sass with the epistemological machinery required to unpack Daniel Paul Schreber's delusions and the logic of double bookkeeping.
- Iain McGilchrist — McGilchrist’s hemispheric thesis in The Master and His Emissary and The Matter With Things explicitly draws upon Sass to demonstrate that schizophrenia is an acute crisis of isolated, hyper-rational left-hemisphere cognition stripped of right-hemisphere holistic contextualization.
- Apophenia — Tracing Klaus Conrad's Gestalt analysis of schizophrenia (Trema, apophany, anastrophy) and Kapur's aberrant salience hypothesis, this note details the perceptual mechanics whereby background noise becomes charged with unmotivated meaning.
- Bergson’s Eliminative Model of Perception and Memory — Bergson's thesis that the nervous system acts as a utilitarian reducing valve illustrates what happens when cognitive filtration breaks down, permitting background perceptual noise to inundate the mind with overwhelming, decontextualized lucidity.
- The Interface Theory of Perception (ITP) — Donald Hoffman's cognitive theorem demonstrates that human perception is an evolved operational desktop rather than an objective mirror of reality; schizophrenia exposes the profound vulnerability of this perceptual interface when its tacit operating heuristics fail.
- Gestalt Psychology-The Mechanics of the Whole — Investigates figure-ground segregation and perceptual closure; Sass demonstrates that in schizophrenia, the tacit perceptual ground violently erupts as a decontextualized, menacing figure.
References
Louis A. Sass / Madness and Modernism: Insanity in the Light of Modern Art, Literature, and Thought / Harvard University Press ↩︎ ↩︎ ↩︎ ↩︎ ↩︎
Iain McGilchrist / The Master and His Emissary: The Divided Brain and the Making of the Western World / Yale University Press ↩︎
Josef Parnas & Louis A. Sass / Self, Consciousness, and Schizophrenia: A Phenomenological Exploration / American Journal of Psychiatry ↩︎ ↩︎ ↩︎
Louis A. Sass & Josef Parnas / Schizophrenia, Consciousness, and the Self / Schizophrenia Bulletin ↩︎
Wolfgang Blankenburg / Der Verlust der natürlichen Selbstverständlichkeit: Ein Beitrag zur Psychopathologie symptomarmer Schizophrenien / Paradosis ↩︎
Louis A. Sass / The Paradoxes of Delusion: Wittgenstein, Schreber, and the Schizophrenic Mind / Cornell University Press ↩︎ ↩︎ ↩︎
Josef Parnas, Peter Handest, Lennart Jansson, & Louis A. Sass / EASE: Examination of Anomalous Self-Experience / Psychopathology ↩︎ ↩︎