Metaphor Processing Dysfunctions in Schizophrenia Patients With and Without Substance Use Disorders

Ewa Karabanowicz , Ernest Tyburski , Karol Karasiewicz , Andrzej Sokołowski , Monika Mak , Monika Folkierska-Żukowska , Wioletta Radziwiłłowicz

Abstract

Background: Patients with schizophrenia have difficulties comprehending metaphors, which significantly impedes communication. However, this topic has not been thoroughly studied in people with a dual diagnosis. On this basis, we formulated two research aims: a) to compare the ability to comprehend metaphors in schizophrenia patients without (SZ) and with substance use disorder (SZ-SUD) and b) to determine the relationship between the processing of metaphorical content and the severity of psychopathological symptoms in both clinical groups. Methods: A total of 40 individuals with SZ and 40 individuals with SZ-SUD took part in the study. The control group was composed of 40 individuals without a psychiatric or neurological diagnosis. Four subtests from the Right Hemisphere Language Battery (Picture Metaphor Test, Written Metaphor Test, Picture Metaphor Explanation Test, Written Metaphor Explanation Test) were used to measure the ability to understand and explain metaphors. Results: Both groups of individuals with schizophrenia (SZ and SZ-SUD) scored lower than individuals from the control group on all tests of metaphor processing. However, no differences were observed between the two clinical groups. SZ-SUD patients had better results for Picture Metaphor Explanation than for Written Metaphor Explanation. Negative symptoms were found to be significant predictors of difficulties with understanding and explaining metaphors. Conclusion: Individuals with schizophrenia, regardless of their substance use disorder (SUD) status, exhibit impaired metaphorical content processing. SUD in schizophrenia is not associated with significant impairments in understanding and explaining metaphorical content. Moreover, impairments in processing metaphorical content are associated with more severe negative symptoms of schizophrenia.
Author Ewa Karabanowicz
Ewa Karabanowicz,,
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, Ernest Tyburski (Wydział Psychologii i Prawa w Poznaniu)
Ernest Tyburski,,
- Wydział Psychologii i Prawa w Poznaniu
, Karol Karasiewicz
Karol Karasiewicz,,
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, Andrzej Sokołowski
Andrzej Sokołowski,,
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, Monika Mak
Monika Mak,,
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, Monika Folkierska-Żukowska
Monika Folkierska-Żukowska,,
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, Wioletta Radziwiłłowicz
Wioletta Radziwiłłowicz,,
-
Journal seriesFrontiers in Psychiatry, ISSN 1664-0640, (N/A 100 pkt)
Issue year2020
Vol11
Pages1-10
Publication size in sheets0.5
Article number331
Keywords in Englishmetaphor processing, cognitive functions, schizophrenia, substance use disorder, dual diagnosis
ASJC Classification2738 Psychiatry and Mental health
DOIDOI:10.3389/fpsyt.2020.00331
URL https://doi.org/10.3389/fpsyt.2020.00331
Languageen angielski
File
Metaphor processing dysfunctions.pdf 667.82 KB
Oświadczenie 2.pdf 2.25 MB
Score (nominal)100
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.991; WoS Impact Factor: 2018 = 3.161 (2)
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