Tehran University of Medical Sciences Auditory and Vestibular Research 2423-480X 23 1 2017 07 31 62 69 Hourieh Ahadi Department of Linguistics and Foreign Languages, Payame Noor University, Tehran, Iran Reza Nilipour Department of Speech therapy, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran Belghis Rovshan Department of Linguistics and Foreign Languages, Payame Noor University, Tehran, Iran Hassan Ashayeri Department of Postgraduate, Faculty of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran Shohreh Jalaie Department of Biostatistics, School of Rehabilitation, Tehran University of Medical Sciences, Iran 2017 05 24 Background and Aim: Most of the researches are about bilingual children with specific language impairment and importance of it in recognition and treatment. This study aimed to assess verb morphology in bilinguals with specific language impairment (SLI) and compare them with normal bilinguals. Methods: Six bilingual (Azeri and Persian) children with specific language impairment at the age of 7-8 years were collected from clinics of Tehran, Iran. They were evaluated about verb morphology using narrative speech and specific language impairment test and then, compared with six age-matched and six other language-matched children as control group. Children with specific language impairment were diagnosed by exhibiting a significant delay (more than one year) in language that can not be explained by intelligence deficits, hearing loss or visual impairment. We used Man-Whitney test for comparing the groups. Results: Bilingual children with specific language impairment had delay in comparison with their age-matched group in subject-verb agreement (p=0.020) and articulating tense morphemes (p=0.019). They also had meaningful delay in using proper tense of verbs (past, present, and future) in comparison with languagematched control group (p=0.029). Conclusion: Comparison of typical development of bilingual children and bilinguals with specific language impairment shows that verb morphology is a good clinical marker for diagnosing and treatment of these children. https://avr.tums.ac.ir/index.php/avr/article/view/273