20 papers in the library · 779 citations · publishing 2008-2026
Schizophr Res Cogn June 11, 2026 Kristina Ballestad Gundersen, Tina Dam Kristensen, Alberte C.E. Jeppesen et al.
Comparative profiles of anomalous self-experiences and social cognition in clinical high risk for psychosis and autism spectrum disorder.
The lancet. Psychiatry March 1, 2026 Jasper Feyaerts, Pavan S Brar, Louis Sass et al. 1 citation
In the past three decades, psychiatric research has increasingly focused on the early subthreshold stages of psychosis, with the aim of improving the early identification and treatment of individuals at increased risk of psychotic disorder. Yet, despite considerable research effort, current early psychosis research faces several limitations. In this Personal View, we consider how integrating...
The lancet. Psychiatry February 1, 2026 Rosa Ritunnano, Jeannette Littlemore, Barnaby Nelson et al. 8 citations
Delusions in psychosis involve complex and dynamic experiential, affective, cognitive, behavioural, and interpersonal alterations. Their pattern of emergence during the early stages of illness remains poorly understood and the origin of their thematic content unclear. Phenomenological accounts have emphasised alterations of selfhood and reality experience in delusion formation but have not...
Psychopathology August 18, 2025 Evan J. Kyzar, George H Denfield, Jasper Feyaerts et al. 1 citation
Dynamical systems theory (DST) has recently gained traction as a framework to describe and predict the progression of psychopathology. However, a number of challenges to the application of DST to psychopathology have arisen, including the heterogeneity of symptom measures and the lack of theoretical underpinnings to describe the temporal unfolding of psychiatric illnesses. In this article, we...
Australasian psychiatry : bulletin of Royal Australian and New Zealand College of Psychiatrists August 1, 2025 Vera A Barata, Suzie Lavoie, Łukasz Gawęda et al. 3 citations
IntroductionWe previously proposed a neurophenomenological model of schizophrenia, linking basic self-disturbance with neural deficits of source monitoring and aberrant salience. Baseline comparisons in ultra-high risk (UHR) and first-episode psychosis (FEP) samples indicated a relationship between basic self-disturbance and source monitoring deficits, but not aberrant salience. The current...
January 18, 2024 Jasper Feyaerts, Barnaby Nelson, Louis Sass 1 citation preprint
Understanding alterations of selfhood (termed self-disorders or self-disturbances) that are considered typical of the schizophrenia-spectrum is a central focus of phenomenological research. The currently most influential way of phenomenologically conceiving self-disorders in schizophrenia is as disorders of the so-called most basic or ‘minimal self’. In this paper, we first highlight some...
Early Intervention in Psychiatry July 2, 2023 Marija Krcmar, Cassandra Wannan, Suzie Lavoie et al. 6 citations
AIM: Basic self disturbance is a putative core vulnerability marker of schizophrenia spectrum disorders. The primary aims of the Self, Neuroscience and Psychosis (SNAP) study are to: (1) empirically test a previously described neurophenomenological self-disturbance model of psychosis by examining the relationship between specific clinical, neurocognitive, and neurophysiological variables in UHR...
Psychiatry and Clinical Neurosciences April 18, 2023 Lucy Chester, L. Valmaggia, M. Kempton et al.
Evidence for case–control studies suggests that cannabis use is a risk factor for the development of psychosis. However, there have been limited prospective studies and the direction of this association remains controversial. The primary aim of the present study was to examine the association between cannabis use and the incidence of psychotic disorders in people at clinical high risk of...
Early Intervention in Psychiatry March 1, 2023 Lachlan Kent, Barnaby Nelson, Georg Northoff 35 citations
Time is a core aspect of psychopathology with potential for clinical use and early intervention. Temporal experience, perception, judgement and processing are distorted in various psychiatric disorders such as mood (depression and mania), anxiety, autistic, impulse-control, dissociative and attention-deficit/hyperactivity disorders. Can these disorders of time be used as early diagnostic or...
Epidemiology and Psychiatric Sciences January 16, 2023 Rosa Ritunnano, D Papola, Matthew R Broome et al. 32 citations
This editorial reflects on current methodological trends in translational research in mental health. It aims to build a bridge between two fields that are frequently siloed off from each other: interventional research and phenomenologically informed research. Recent years have witnessed a revival of phenomenological approaches in mental health, often - but not only - as a means of connecting...
World psychiatry : official journal of the World Psychiatric Association (WPA) June 1, 2022 Paolo Fusar‐poli, Andrés Estradé, Giovanni Stanghellini et al. 225 citations
Psychosis is the most ineffable experience of mental disorder. We provide here the first co-written bottom-up review of the lived experience of psychosis, whereby experts by experience primarily selected the subjective themes, that were subsequently enriched by phenomenologically-informed perspectives. First-person accounts within and outside the medical field were screened and discussed in...
Lancet Psychiatry May 1, 2022 Rosa Ritunnano, Joshua J. Kleinman, Danniella Whyte Oshodi et al.
BACKGROUND Delusions are a common transdiagnostic feature of psychotic disorders, and their treatment remains suboptimal. Despite the pressing need to better understand the nature, meaning, and course of these symptoms, research into the lived experience of delusional phenomena in psychosis is scarce. Thus, we aimed to explore the lived experience and subjective apprehension of delusions in...
Consciousness and Cognition 2020 Abigail C. Wright, Barnaby Nelson, David Fowler et al. 26 citations
Anomalous self-experiences have been described as a prerequisite for anomalous perceptual experiences. Later, these anomalous perceptual experiences may then be metacognitively appraised as distressing, maintaining these experiences and later leading to anomalous (delusional) beliefs. This model of anomalous events may potentially be driven by perceptual biases and metacognitive deficits. This...
Conscious Cogn November 1, 2019 Barnaby Nelson, Suzie Lavoie, Łukasz Gawęda et al. 99 citations
BackgroundThe integration of various domains or levels of analysis (clinical, neurobiological, genetic, etc.) has been a challenge in schizophrenia research. A promising approach is to use the core phenomenological features of the disorder as an organising principle for other levels of analysis. Minimal self-disturbance (fragility in implicit first-person perspective, presence and agency) is...
Early Intervention in Psychiatry June 1, 2019 Barnaby Nelson, Emily Li, David C Cicero et al. 39 citations
The Inventory of Psychotic-Like Anomalous Self-Experiences (IPASE) is a self-report measure of minimal self-disturbance. The aim of the current report was to assess the construct validity of the scale by examining its convergent validity with the gold-standard measure of minimal self-disturbance, the Examination of Anomalous Self-Experience (EASE), and its discriminant validity. The sample...
Schizophr Bull February 1, 2019 Elizabeth Pienkos, Anne Giersch, Marie Hansen et al. 93 citations
Recent psychiatric research and treatment initiatives have tended to move away from traditional diagnostic categories and have focused instead on transdiagnostic phenomena, such as hallucinations. However, this emphasis on isolated experiences may artificially limit the definition of such phenomena and ignore the rich, complex, and dynamic changes occurring simultaneously in other domains of...
Consciousness and Cognition September 1, 2013 Louis Sass, Elizabeth Pienkos, Barnaby Nelson 42 citations
This paper offers a comparative investigation of anomalous self-experiences common in schizophrenia (defined in Examination of Anomalous Self Experiences (EASE) instrument) and those of normal individuals in an intensely introspective orientation (early 20th-century "introspectionist" psychology). The latter represent a relatively pure manifestation of certain forms of exaggerated...
Consciousness and Cognition June 1, 2013 Louis Sass, Elizabeth Pienkos, Barnaby Nelson et al. 144 citations
Various forms of anomalous self-experience can be seen as central to schizophrenia and other psychiatric disorders. We examined similarities and differences between anomalous self-experiences common in schizophrenia-spectrum disorders, as listed in the EASE (Examination of Anomalous Self Experiences), and those described in published accounts of severe depersonalization. Our aims were to...
Psychopathology 2009 Barnaby Nelson, Louis A Sass, Borut Škodlar
The early intervention movement for treatment of schizophrenia and other psychotic disorders has extended to include pharmacological and psychological treatment of putatively prodromal (or 'ultra-high risk') patients. The psychotherapy that has been trialed to date is cognitive-behaviour therapy (CBT), due to its apparent success with patients with established psychotic disorder and its current...
Psychopathology 2008 Barnaby Nelson, Louis Sass 24 citations
While considerable research attention has been devoted to the causal relationship between substance use and psychosis, the phenomenology of the association between the two has largely been ignored. This is a significant shortcoming, because it blinds researchers to the possibility that there may be elements of the subjective experience of substance use and psychosis that contribute to their...