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Journal Articles npj Schizophrenia Year : 2022

Impaired Sense of Agency and Associated Confidence in Psychosis

Amit Regev Krugwasser
  • Function : Author
Yoni Stern
  • Function : Author
Eiran Vadim Harel
  • Function : Author
Roy Salomon


The Sense of Agency (SoA), our sensation of control over our actions, is a fundamental mechanism for delineating the Self from the environment and others. SoA arises from implicit processing of sensorimotor signals as well as explicit higher-level judgments. Psychosis patients suffer from difficulties in the sense of control over their actions and accurate demarcation of the Self. Moreover, it is unclear if they have metacognitive insight into their aberrant abilities. In this pre-registered study, we examined SoA and its associated confidence judgments using an embodied virtual reality paradigm in psychosis patients and controls. Our results show that psychosis patients not only have a severely reduced ability for discriminating their actions but they also do not show proper metacognitive insight into this deficit. Furthermore, an exploratory analysis revealed that the SoA capacities allow for high levels of accuracy in clinical classification of psychosis. These results indicate that SoA and its metacognition are core aspects of the psychotic state and provide possible venues for understanding the underlying mechanisms of psychosis, that may be leveraged for novel clinical purposes.
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Dates and versions

hal-03318445 , version 1 (10-08-2021)



Amit Regev Krugwasser, Yoni Stern, Nathan Faivre, Eiran Vadim Harel, Roy Salomon. Impaired Sense of Agency and Associated Confidence in Psychosis. npj Schizophrenia, 2022, ⟨10.1038/s41537-022-00212-4⟩. ⟨hal-03318445⟩
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