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Browsing by Author "Fallows, Daniel Lezameta"

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  • Detection of high-risk psychosis in adolescents and young adults from the Algarve: validation of the portuguese version of ESI
    Publication . Fallows, Daniel Lezameta; Rós, Antónia Maria Jiménez
    Background: Detecting individuals at high-risk for psychosis (HRP) is a crucial opportunity for intervention and has been a central focus of research in recent decades. Early and accurate identification of the psychosis prodrome in essential, as it can improve treatment outcomes, reduce the likelihood of a first psychotic episode to occur and help prevent the onset of fullblown psychotic disorders (McGorry et. al, 2002; Correll et. al, 2018; Fusar-Poli et. al, 2020). The Eppendorf Schizophrenia Inventory (ESI) is a clinical tool designed to detect and monitor possible schizophrenia, by evaluating an individual’s subjective experiences associated with the disorder, facilitating differential diagnosis and serving as a wellestablished schizotypy scale (Mass, 2005). The questionnaire consists of 39 items that explore personal experiences and feelings that are related to multiple cognitive domains. The instrument includes five subscales: (1) Attention and Speech Impairment (AS); (2) Ideas of Reference (IR); (3) Auditory Uncertainty (AU); (4) Deviant Perception (DP); (5) Frankness (FR). Mass (2000) initially reported satisfactory psychometric outcomes from the preliminary use of the ESI. In a subsequent study conducted in 2005, the instrument underwent confirmatory factor analysis, with findings confirming that ESI is a reliable and valid tool for assessing abnormal subjective experiences in individuals with schizophrenia. In addition, Niessen (2010) investigated the ESI’s effectiveness in accurately predicting diagnostic group classifications, including help seeking individuals, those with mild psychiatric symptoms, individuals with severe mood or anxiety disorders, ultra high-risk (UHR) cases and acute psychosis. The findings demonstrated that the ESI is sensitive enough to distinguish between nonpsychotic states and UHR states. It also successfully distinguishes between UHR states and fully developed psychosis. The ESI has been translated and applied in different languages to verify its applicability across different populations while maintaining similar results. Galeazzi (2004) developed the Italian version of ESI, which demonstrated satisfactory validity and acceptable internal consistency. Similarly, Chung (2012) validated the Korean version (K-ESI), with findings showing significant differences in scores between adolescents, adults and schizophrenia patients. This suggests that the K-ESI has strong discriminant validity, effectively distinguishing between non-help-seeking individuals and those with diagnosed schizophrenia.(...)
    2024-11-19Master thesis Open access Show more