Verbal Working Memory in Schizophrenia: Relationship to Cigarette Smoking and Psychopathology

A number of researches suggest smoking serves as a form of self-medication to reduce the side effects of antipsychotic medications, to alleviate negative symptoms, and/or to ameliorate a number of cognitive deficits associated with schizophrenia. Objective: The aim of this study was to investiga...

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Main Authors: Hamzah, Hazura, Abdullah, Wan Norhaida Wan, Jamaluddin, Ruzita, Othman, Zahiruddin
Format: Article
Language:English
Published: Malaysian Psychiatric Association 2012
Subjects:
Online Access:http://eprints.usm.my/43880/1/Verbal%20Working%20Memory%20in%20Schizophrenia.pdf
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author Hamzah, Hazura
Abdullah, Wan Norhaida Wan
Jamaluddin, Ruzita
Othman, Zahiruddin
author_facet Hamzah, Hazura
Abdullah, Wan Norhaida Wan
Jamaluddin, Ruzita
Othman, Zahiruddin
author_sort Hamzah, Hazura
collection USM
description A number of researches suggest smoking serves as a form of self-medication to reduce the side effects of antipsychotic medications, to alleviate negative symptoms, and/or to ameliorate a number of cognitive deficits associated with schizophrenia. Objective: The aim of this study was to investigate the association of cigarette smoking with verbal working memory and psychopathology of patients with schizophrenia. Methods: Fifty-three patients with schizophrenia were assessed by a single rater using the Malay Version of Auditory Verbal Learning Test (MVAVLT) and Positive and Negative Syndrome Scale (PANSS). Smokers (n=30) were compared with nonsmokers (n=23) on socio-demographic, clinical, psychopathology and verbal memory variables. Single linear and multiple regression analysis were performed to determine factors associated with verbal memory performance. Results: Verbal working memory performance is associated with lower number of admission to ward, lesser severity of the negative symptoms or general psychopathology of schizophrenia and use of atypical antipsychotics in all schizophrenic subjects. Smokers with schizophrenia scored higher than non- smoker in measures that reflect immediate memory, delayed recall and recognition memory. However, the association between verbal working memory performance and smoking status was found to be not significant. Conclusion: Verbal working memory performance is associated with negative symptoms but not positive symptoms. This study failed to detect association of smoking on verbal working memory.
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spelling usm.eprints-438802019-04-10T03:37:42Z http://eprints.usm.my/43880/ Verbal Working Memory in Schizophrenia: Relationship to Cigarette Smoking and Psychopathology Hamzah, Hazura Abdullah, Wan Norhaida Wan Jamaluddin, Ruzita Othman, Zahiruddin RZ Other systems of medicine A number of researches suggest smoking serves as a form of self-medication to reduce the side effects of antipsychotic medications, to alleviate negative symptoms, and/or to ameliorate a number of cognitive deficits associated with schizophrenia. Objective: The aim of this study was to investigate the association of cigarette smoking with verbal working memory and psychopathology of patients with schizophrenia. Methods: Fifty-three patients with schizophrenia were assessed by a single rater using the Malay Version of Auditory Verbal Learning Test (MVAVLT) and Positive and Negative Syndrome Scale (PANSS). Smokers (n=30) were compared with nonsmokers (n=23) on socio-demographic, clinical, psychopathology and verbal memory variables. Single linear and multiple regression analysis were performed to determine factors associated with verbal memory performance. Results: Verbal working memory performance is associated with lower number of admission to ward, lesser severity of the negative symptoms or general psychopathology of schizophrenia and use of atypical antipsychotics in all schizophrenic subjects. Smokers with schizophrenia scored higher than non- smoker in measures that reflect immediate memory, delayed recall and recognition memory. However, the association between verbal working memory performance and smoking status was found to be not significant. Conclusion: Verbal working memory performance is associated with negative symptoms but not positive symptoms. This study failed to detect association of smoking on verbal working memory. Malaysian Psychiatric Association 2012 Article PeerReviewed application/pdf en http://eprints.usm.my/43880/1/Verbal%20Working%20Memory%20in%20Schizophrenia.pdf Hamzah, Hazura and Abdullah, Wan Norhaida Wan and Jamaluddin, Ruzita and Othman, Zahiruddin (2012) Verbal Working Memory in Schizophrenia: Relationship to Cigarette Smoking and Psychopathology. Malaysian Journal Of Psychiatry, 21 (1). pp. 44-53. ISSN 2232-0385 http://www.mjpsychiatry.org/index.php/mjp/article/view/181
spellingShingle RZ Other systems of medicine
Hamzah, Hazura
Abdullah, Wan Norhaida Wan
Jamaluddin, Ruzita
Othman, Zahiruddin
Verbal Working Memory in Schizophrenia: Relationship to Cigarette Smoking and Psychopathology
title Verbal Working Memory in Schizophrenia: Relationship to Cigarette Smoking and Psychopathology
title_full Verbal Working Memory in Schizophrenia: Relationship to Cigarette Smoking and Psychopathology
title_fullStr Verbal Working Memory in Schizophrenia: Relationship to Cigarette Smoking and Psychopathology
title_full_unstemmed Verbal Working Memory in Schizophrenia: Relationship to Cigarette Smoking and Psychopathology
title_short Verbal Working Memory in Schizophrenia: Relationship to Cigarette Smoking and Psychopathology
title_sort verbal working memory in schizophrenia relationship to cigarette smoking and psychopathology
topic RZ Other systems of medicine
url http://eprints.usm.my/43880/1/Verbal%20Working%20Memory%20in%20Schizophrenia.pdf
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AT othmanzahiruddin verbalworkingmemoryinschizophreniarelationshiptocigarettesmokingandpsychopathology