Language Acquisition in Late Critical Period: A Case Report

Gheitury, Amer; Sahraee, Ahmad Hosein; Hoseini, Maryam

doi:10.1179/1557069x12y.0000000008

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…Derivational morphology was, nevertheless, affected much less than the inflectional morphology, only 4% compared to 28% [17].…”

Section: Mean+-sdmentioning

confidence: 99%

“…A case study by Gheitury et al (2012) evaluated the written performance of a young deaf woman and reported serious problems with syntax and inflectional morphology, which occurred frequently throughout the texts she wrote. Derivational morphology was, nevertheless, affected much less than the inflectional morphology, only 4% compared to 28% [17].…”

Section: Mean+-sdmentioning

confidence: 99%

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Dissociation of Inflectional and Derivational Morphology in Persian: Evidence From Aphasic Patients

Gheitury

Dianat

Rezaei

2017

Journal of Modern Rehabilitation

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Introduction:It is believed that different components of our linguistic capabilities are not impaired to the same extent in aphasic patients. Moreover theoretical issues on aphasia can be researched on patients with different languages. Thus, we aimed to study the dissociation of inflectional and derivational morphology by assessing the performance of 8 Persian bilingual aphasic patients in producing Persian derivational and inflectional words. Materials and Methods:To explore the capability of patients in using derivational and inflectional words, in addition to obtaining a brief history from all patients and an image of the impaired regions of the brain, two types of tasks, word-repetition and spontaneous speech tasks, were administered to them. The results were then statistically analyzed to see which part of their word-formation competence, derivational or inflectional processes, was impaired more seriously. Results:The results of word-repetition and spontaneous speech tests indicated that patients did better at derivational morphology. In addition, a quantitative analysis revealed a gap between scores for derivational and inflectional words, confirming the dissociation of the two types of the process as claimed by generative linguists. Conclusion:Based on the results patients had a better performance on derivational words as compared to inflectional ones confirming this linguistic theory that the two types of process take place in different sections, i.e. derivational process belongs to morphology whereas inflectional process is basically syntactic.

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“…Derivational morphology was, nevertheless, affected much less than the inflectional morphology, only 4% compared to 28% [17].…”

Section: Mean+-sdmentioning

confidence: 99%

Section: Mean+-sdmentioning

confidence: 99%

Dissociation of Inflectional and Derivational Morphology in Persian: Evidence From Aphasic Patients

Gheitury

Dianat

Rezaei

2017

Journal of Modern Rehabilitation

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Is Semantics Affected by Missing a Critical Period? Evidence from the Persian Deaf

Choubsaz

Gheitury

2016

J Psycholinguist Res

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The present study aims to explore the semantic knowledge of a group of Iranian deaf individuals who, due mainly to auditory deprivation did not acquire language normally in early years of their life. The participants were ten deaf and a matched number of hearing individuals as control group. A test of five tasks was administrated to assess their knowledge of vocabulary, collocation, semantic categorizations, semantic features, and proverbs. Although the results indicated a significant difference between the deaf and the hearing group, a between- group comparison of each task revealed no significant difference between the deaf and hearing participants in the number of errors in vocabulary, collocations, semantic categorization, and semantic features. The only task in which deaf participants did significantly worse than the control group was that of proverbs. Therefore, it could be argued that, language deprivation in early childhood does not have the same effect on different components of our linguistic knowledge and that the acquisition of semantics may well continue beyond puberty.

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