Davidson Meghan M, Ellis Weismer Susan
Callier Center for Communication Disorders, School of Behavioral and Brain Sciences, The University of Texas at Dallas, 1966 Inwood Road, Dallas, TX, 75235, USA.
Communication Sciences and Disorders and the Waisman Center, University of Wisconsin-Madison, 1500 Highland Ave, Rm 473, Madison, WI, 53705, USA.
J Autism Dev Disord. 2017 Jul;47(7):2163-2175. doi: 10.1007/s10803-017-3135-z.
This study examined the extent to which a discrepant comprehension-production profile (i.e., relatively more delayed comprehension than production) is characteristic of the early language phenotype in autism spectrum disorders (ASD) and tracked the developmental progression of the profile. Our findings indicated that a discrepant comprehension-production profile distinguished toddlers (30 months) with ASD from late talkers without ASD (91% sensitivity, 100% specificity) in groups that were comparable on expressive language, age, and socioeconomic status. Longitudinal data for children with ASD revealed that the discrepant profile steadily decreased from 30 to 44 months until there was no significant comprehension-production difference at 66 months. In conclusion, results suggest that lower comprehension than production may be an age-specific marker of toddlers with ASD.
本研究考察了理解-产出差异模式（即理解能力相对比产出能力延迟更明显）在自闭症谱系障碍（ASD）早期语言表型中的特征程度，并追踪了该模式的发展进程。我们的研究结果表明，在表达性语言、年龄和社会经济地位相当的群体中，理解-产出差异模式能够区分患有ASD的幼儿（30个月）和无ASD的说话晚的幼儿（灵敏度为91%，特异度为100%）。对患有ASD儿童的纵向数据显示，这种差异模式在30至44个月期间稳步下降，直到66个月时理解能力和产出能力没有显著差异。总之，结果表明理解能力低于产出能力可能是患有ASD幼儿的一个年龄特异性标志。
