Social language in autism spectrum disorder: A computational analysis of sentiment and linguistic abstraction

被引:17
作者
Chojnicka, Izabela [1 ]
Wawer, Aleksander [2 ]
机构
[1] Univ Warsaw, Fac Psychol, Dept Hlth & Rehabil Psychol, Warsaw, Poland
[2] Polish Acad Sci, Linguist Engn Grp, Inst Comp Sci, Warsaw, Poland
来源
PLOS ONE | 2020年 / 15卷 / 03期
关键词
NARRATIVE COMPETENCE; CHILDREN; ABILITY;
D O I
10.1371/journal.pone.0229985
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Individuals with autism spectrum disorder (ASD) demonstrate impairments with pragmatic (social) language, including narrative skills and conversational abilities. We aimed to quantitatively characterize narrative performance in ASD using natural language processing techniques: sentiment and language abstraction analyses based on the Linguistic Category Model. Individuals with ASD and with typical development matched for age, gender, ethnicity, and verbal and nonverbal intelligence quotients produced language samples during two standardized tasks from the Autism Diagnostic Observation Schedule, Second Edition assessment: Telling a Story from a Book and Description of a Picture. Only the narratives produced during the Book Task differed between ASD and control groups in terms of emotional polarity and language abstraction. Participants with typical development used words with positive sentiment more often in comparison to individuals with ASD. In the case of words with negative sentiment, the differences were marginally significant (participants with typical development used words with negative sentiment more often). The Book Task narratives of individuals with ASD were also characterized by a lower level of language abstraction than narratives of peers with typical development. Linguistic abstraction was strongly positively correlated with a higher number of words with emotional polarity. Neither linguistic abstraction nor emotional polarity correlated with participants' age or verbal and nonverbal IQ. The results support the promise of sentiment and language abstraction analyses as a useful tool for the quantitative, fully automated assessment of narrative abilities among individuals with ASD.
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页数:16
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