Dr. Jasper Feyaerts | 13 Nov 2025
A growing body of research supports the role of self-disorders as core phenotypic features of schizophrenia-spectrum disorders. Self-disorders comprise various alterations of conscious experience whose theoretical understanding continues to present a challenge. In this talk, Dr. Jasper Feyaerts presented an overview and theoretical revision of the currently most influential model of altered selfhood in schizophrenia: the phenomenological basic self-disturbance or ipseity-disorder model (IDM). Dr. Feyaerts critically discussed the descriptive adequacy of the model with respect to the clinical heterogeneity of the alterations of self- and world-awareness characteristic of schizophrenia. Implications of our revised model for explanatory research and therapeutic practice will be considered.
Dr. Jasper Feyaerts
Assistant Professor of Clinical Psychology
Department of Psychoanalysis and Clinical Consulting, Ghent University
Dr. Jasper Feyaerts is an Assistant Professor of Clinical Psychology at Ghent University, where he is affiliated with the Department of Psychoanalysis and Clinical Consulting. His work is distinguished by its interdisciplinary approach, weaving together insights from phenomenology, psychoanalysis, philosophy, and neuroscience. Dr. Feyaerts’ current research focuses on phenomenological psychopathology, with particular emphasis on psychosis and delusions.
Dr. Feyaerts’ research has critically engaged with psychoanalytic theories, including those of Lacan and Freud, as well as Wittgensteinian perspectives, to deepen the understanding of schizophrenic experiences. His publications include the influential two-part series in Schizophrenia Bulletin (2024a, 2024b) co-authored with Professor Louis Sass, one of the original architects of the Ipseity-Disorder Model, which reconsidered and revised the prevailing ipseity-disturbance model (IDM) in schizophrenia. Dr. Feyaerts’ most recent article in The Lancet Psychiatry (2025) explores how integrating insights from the revised self-disorder model and dynamical systems theory can improve early identification and treatment of psychotic disorders.