Morphological deficits related to noun in Kurdish- Persian bilingual Broca’s aphasic patients

One of the major issues in the field of linguistics that has attracted the attention of neurologists, linguists and psychologists of language is bilingual aphasia. this study has been done to investigate the morphological deficits of nouns (singular, plural, and collective) in Kurdish-Persian bilingual Broca’s aphasic patients. The research method was descriptive-analytical and case-series. The subjects included 5 Kurdish-Persian bilingual aphasic patients who were admitted to Shahid Mostafa Khomeini hospital in Ilam province due to stroke and damage to the left hemisphere (Broca area). In this research, the Standard Bilingual Aphasic Test (BAT) and a self-made questionnaire were used. The morphological deficits of nouns categories in bilingual aphasic patients were significantly different in both Kurdish and Persian patients. The degree of disorder in these patients was 30% in singular, 48% in plural and 47% in collective. Overall, in these three categories, patients had 41.66% disorder. The type of aphasia was detected as Broca. In testing hypotheses, both hypotheses were confirmed and the subjects suffer from morphological deficits related to noun categories. Patients had better performance and less disorder in Kurdish language as native language. The morphological deficits were respectively related to collective, plural, and singular nouns.