Selective Impairment in Verb Inflection: Evidence from Persian Agrammatism
الموضوعات : نشریه زبان و ترجمهLeila Salehnejad 1 , Mansoore Shekaramiz 2 , Elkhas Veisi 3 , Nastaran Majdinasab 4
1 - Department of Linguistics, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
2 - Department of Linguistics, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
3 - Department of Foreign Languages and Linguistics, Payame Noor University, Iran
4 - Department of Neurology, Jundishapur University of Medical Sciences, Ahvaz, Iran
الکلمات المفتاحية: Agreement, tense, Agrammatism, Interpretable Features' Impairment Hypothesis,
ملخص المقالة :
Impaired morpho-syntactic production is the hallmark of agrammatic aphasia. It has been shown across several languages that verb inflection is difficult for agrammatic aphasic speakers. Many studies have indicated that this deficit is selective. Agreement is relatively preserved, while tense is severely impaired. The present work is based on Interpretable Features' Impairment Hypothesis (Fyndanis, 2012) which believes that categories with uninterpretable features (e.g. Agr) are better preserved than categories with interpretable features (e.g. Tense & Aspect). It is argued that the increased processing demands of Tense and Aspect, which carry interpretable features, render them more vulnerable compared to Agreement, which bears an uninterpretable feature and is a local, strictly grammatical operation. A sentence completion task tapping subject-verb agreement and tense and a picture description task were administered to two native speakers of Persian with agrammatic aphasia. The patients were classified as Broca's aphasics according to the Persian aphasia test, their MRI reports and CT Scans. They were asked to participate in a battery of tests designed to assess their abilities in production of inflectional morphology. Results showed that all the agrammatic speakers performed as hypothesized. Overall, the tense was significantly more impaired than agreement.
Abusaeidi, A. A., Ahangar, A. A., Sasan Nejad, P., & Mikdeh, A. (2016). Per-ception of intonational contours in Persian Broca’s Aphasics, Zaban Pa-zhuhi Journal, 9(22), 55-76.
Bastiaanse, R., & Thompson, C. K. (2012). Perspectives on agrammatism. New York: Psychology Press.
Brookshire, R. H. (2003). Introduction to neurogenic communication disorders. New York: Mosby Press.
Druks, J. (2017). Contemporary and emer-gent theories of agrammatism. Lon-don and New York: Routledge Taylor & Francis Group.
Faroqi-Shah, Y., & Thompson, C. K. (2007). Verb inflections in agrammat-ic aphasia: Encoding of tense fea-tures, Journal of Memory and Lan-guage, 56, 129-151.
Faroqi-shah, Y., & Friedman, L. (2015). Production of verb tense in agram-matic aphasia: a meta-analysis and further data. Behavioral Neurology, 27-42.
Friedmann, N., & Grodzinsky, Y. (1997). Tense and agreement in agrammatic production: Pruning the syntactic tree. Brain and Language, 80, 397-425.
Friedmann, N., & Grodzinsky, Y. (2000). The split inflection in neurolinguis-tics. Studies in Comparative Devel-opmental Linguistics, 84-104.
Fyndanis, V., Varlokosta, S., & Tsapkini, K. (2012). Agrammatic production: In-terpretable features and selective im-pairment in verb inflection. Lingua, 122(10), 1134-1147.
Gavarró, A. (2002). Failure to Agree in agrammatism. Amsterdam Studies in The Theory and History of Linguistic Science Series, 4, 267-278.
Harun, M. (2020). Investigating the agram-matic production of canonical and non-canonical sentences cross-linguistically. Advances in Language and Literary Studies, 11(1), 57-68.
Kiss, T., & Alexiadou, A. (2015). Syntax – Theory and analysis: an international handbook. Volume 3. Germany: De Gruyter Mouton.
Lee, J., & Thompson, C. K. (2005). Func-tional categories in agrammatic speech. LSO working papers in lin-guistics, 5, 107.
Nanousi, V., Masterson, J., Druks, J., & At-kinson, M. (2006). Interpretable vs. uninterpretable features: Evidence from six Greek-speaking agrammatic patients. Journal of Neuro linguistics, 19(3), 209-238.
Nilipour, R. (1994). Persian aphasia test. Tehran: Iran University of Medical Sciences.
Nilipour, R. (2002). Syndromes of aphasia in Persian. Tehran: University of Welfare and Rehabilitation Sciences Press.
Qorchi, B., & Bouchara, A. (2017). Agrammatism and other aphasia-related disorders in Moroccan Arabic-speaking aphasics. International Journal of Applied Linguistics & Eng-lish Literature, 6(1), 156-168.
Radford, A. (2004). Minimalist Syntax: Ex-ploring the Structure of English. Cambridge: Cambridge University Press.
Roberts, I. (2017). The Oxford Handbook of Universal Grammar. United King-dom: Oxford University Press.
Salehnejad, L. (2017). The analysis of tense and agreement in agrammatic pro-duction according to the tree pruning hypothesis. Ph.D. thesis in Linguistics. Ahvaz Islamic Azad University.
Salimi Khorshidi, A. & Raghib Doust, Sh. (2013). Verb processing in agrammat-ic patients. Ph.D. thesis in Linguistics. Allameh Tabatabaei University.
Stemmer, B., & Whitaker, H. A. (2008). Handbook of the neuroscience of lan-guage. New York: Academic Press.
