Investigating Mean Length of Utterance (MLU) in Monolingual Persian Speaking Children with Autism Spectrum Disorder (ASD)
محل انتشار: مجله بین المللی مطالعات سلامت، دوره: 6، شماره: 2
سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 440
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استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_IJHS-6-2_006
تاریخ نمایه سازی: 23 دی 1399
چکیده مقاله:
Background: Mean length of utterance (MLU) is one of the most
important measures in estimating language acquisition in children. The
study of how language develops in these patients can be useful in
providing effective treatment strategies. This study aims to investigate
the developmental process of MLU in children with ASD and compare
them with normal children.
Methods: This study is a descriptive, cross-sectional-quantitative one.
The statistical society is all ۳-۶ years of children with ASD in Tehran,
and the sample has been selected via cluster sampling among welfare
organizations in region ۶ (Mantaghe ۶). The participants included ۱۰
monolingual Persian children with ASD aged ۳-۶. In this research, the
spoken utterances of children were recorded and transcribed in ۳۰
minutes of free play sessions. The control group included ۱۰
monolingual Persian children aged ۲-۵, with no previous linguistic and
psychological disorders. Two groups were matched based on nonverbal
IQ and gender.
Results: Based on the findings, the mean and standard deviation of
MLU in autistic children were ۲.۵ and ۱.۲۴, respectively and the mean
and standard deviation of MLU in normal children were ۳.۷۴ and ۱.۰۳,
respectively. The results of T-test analysis showed a statistically
significant difference between two groups with regard to the MLU (t
(۱۸)=-۲.۴۱, Pvalue=۰.۰۲). The results also indicated a statistically
significant correlation between MLU and age in children with ASD
(Pvalue=۰.۰۱, r=۰.۹۵) and in normal children (Pvalue=۰.۰۰۰,
r=۰.۹۵).
Conclusions: The study showed that after controlling for vocabulary
knowledge, non-verbal IQ and talkativeness, MLU was significantly
lower in children with ASD than in normal children. The results also
showed that MLU increases with increase of age in both groups.
کلیدواژه ها:
نویسندگان
Maryam Tafaroji Yeganeh
Assistant Professor, Department of Linguistics, Faculty of Literature and Humanities, Ilam University, Ilam, Iran
Ellahe Kamari
Graduate of Linguistics, Allameh Tabataba'i University, Tehran, Iran