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Journal of Analytical Research in Clinical Medicine
   eISSN: 2345-4970  
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Submitted: 01 May 2015

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J Anal Res Clin Med. 2015;3(3):178-182 doi: 10.15171/jarcm.2015.028

Word and nonword repetition in patients with Schizophrenia

Original Research

Alireza Farnam 1, Ali Jahan 2, Maryam Shirzadi 3, Sara Farhang 4 *

1 Associate Professor, Research Center of Psychiatry and Behavioral Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
2 PhD Student, Department of Cognitive Neuroscience, School of Education and Psychology, University of Tabriz, Tabriz, Iran
3 Assistant Professor, Department of Psychiatry, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
4 Researcher, Research Center of Psychiatry and Behavioral Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
5 Associate Professor, Research Center of Psychiatry and Behavioral Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
6 PhD Student, Department of Cognitive Neuroscience, School of Education and Psychology, University of Tabriz, Tabriz, Iran
7 Assistant Professor, Department of Psychiatry, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
8 Researcher, Research Center of Psychiatry and Behavioral Sciences, Tabriz University of Medical Sciences, Tabriz, Iran



Abstract
Introduction: The assessment of the verbal repetition is important in the study of acquired language disorders and neuropsychology. It is helpful in differential diagnosis of aphasia subtypes, auditory breakdowns, and working memory (WM) performance. Though different linguistic disorders have been identified in patients with schizophrenia, very little is known about their verbal repetition ability. Methods: The present study was conducted in the inpatient ward of Razi Psychiatric Hospital, Tabriz University of Medical Sciences, Iran, during the year 2013. Participants were: 30 patients diagnosed with schizophrenia during the maintenance phase of treatment and 30 healthy people as control group. They were asked to repeat 15 words and 15 nonwords immediately. The stimuli were 1, 2, and 3 syllabic in Turkish language. Any incorrect repetition scored 1 and correct repetitions scored 0. Lexicalization errors were compared between groups too. Results: Both groups repeated words better than nonwords. Patients showed lower ability to repeat nonwords than controls, especially in 3 syllabics. There was no significant difference in the repetition of words between groups though it was better in controls. Patients with schizophrenia made more errors in both words and nonwords and lexicalization errors were twice more. Conclusion: Lower ability to repeat nonwords (than words) in patients with schizophrenia may show the involvement of phonological loop of WM. More lexicalization errors may take place because of dis-inhibition.





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