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The psychopathological trajectories to delusion in Schizophrenia: the affective and schizotypal pathways

Published online by Cambridge University Press:  01 September 2022

D. Borrelli ,
R. Ottoni ,
S. Maffei ,
N. Fascendini ,
C. Marchesi  and
M. Tonna
D. Borrelli*
Affiliation:
University of Parma, Unit Of Neuroscience, Psychiatric Unit, Parma, Italy
R. Ottoni
Affiliation:
University of Parma, Department Of Medicine & Surgery, Unit Of Neuroscience, Psychiatric Unit, Parma, Italy
S. Maffei
Affiliation:
Local Health Service, Department Of Mental Health, Parma, Italy
N. Fascendini
Affiliation:
University of Parma, Unit Of Neuroscience, Psychiatric Unit, Parma, Italy
C. Marchesi
Affiliation:
University of Parma, Department Of Medicine & Surgery, Unit Of Neuroscience, Psychiatric Unit, Parma, Italy
M. Tonna
Affiliation:
University of Parma, Department Of Medicine & Surgery, Unit Of Neuroscience, Psychiatric Unit, Parma, Italy
*
*Corresponding author.

Abstract

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Introduction

Delusions are a key feature of schizophrenia psychopathology. From a phenomenological approach, Jaspers (1913) differentiates between “primary” or true schizophrenic delusions, defined as an unmediated phenomenon that cannot be understood in terms of prior psychological origin or motivation, and “secondary” delusions, understandable from the patient’s mood state or personality. Primary delusions have been considered the hallmark of reality distorsion dimension in schizophrenia, disregarding a possible affective patwhay to delusional belief.

Objectives

The present study was aimed at elucidating the psychopathological trajectories to delusion in schizophrenia through the investigation of both affective and schizotypal trait dispositions.

Methods

Seventy-eight participants affected by schizophrenia were administered the Peters Delusional Inventory (PDI), the Positive and Negative Affective Scale (PANAS), the Experience of Shame Scale (ESS), the Referential Thinking Scale (REF), the Magical Ideation Scale (MIS) and the Perceptual Aberration Scale (PAS).

Results

The severity of delusional ideation (PDI) was positively related to both affective (PANAS positive dimension, ESS) and schizotypal traits (MIS, PAS and REF). Moreover, referential thinking (REF) mediated the relationship between “magical ideation” (MIS) and delusions severity (Fig. 1), whereas experience of shame (ESS) was a moderating factor in the between referential thinking and delusion severity (Fig. 2).

Conclusions

The study findings suggest that in schizophrenia patients, severity of delusions is underpinned by an intertwining of both affective and schizotypal pathways.

Disclosure

No significant relationships.

Keywords

delusionPsychosisPsychopathologyschizophrénia
Type
Abstract
Information
European Psychiatry , Volume 65 , Special Issue S1: Abstracts of the 30th European Congress of Psychiatry , June 2022 , pp. S762
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2022. Published by Cambridge University Press on behalf of the European Psychiatric Association
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