Corriveau Kathleen, Pasquini Elizabeth, Goswami Usha
Centre for Neuroscience in Education, University of Cambridge, Cambridge, England.
J Speech Lang Hear Res. 2007 Jun;50(3):647-66. doi: 10.1044/1092-4388(2007/046).
To explore the sensitivity of children with specific language impairment (SLI) to amplitude-modulated and durational cues that are important for perceiving suprasegmental speech rhythm and stress patterns.
Sixty-three children between 7 and 11 years of age were tested, 21 of whom had a diagnosis of SLI, 21 of whom were matched for chronological age to the SLI sample, and 21 of whom were matched for language age to the SLI sample. All children received a battery of nonspeech auditory processing tasks along with standardized measures of phonology and language.
As many as 70%-80% of children diagnosed with SLI were found to perform below the 5th percentile of age-matched controls in auditory processing tasks measuring sensitivity to amplitude envelope rise time and sound duration. Furthermore, individual differences in sensitivity to these cues predicted unique variance in language and literacy attainment, even when age, nonverbal IQ, and task-related (attentional) factors were controlled.
Many children with SLI have auditory processing difficulties, but for most children, these are not specific to brief, rapidly successive acoustic cues. Instead, sensitivity to durational and amplitude envelope cues appear to predict language and literacy outcomes more strongly. This finding now requires replication and exploration in languages other than English.
探讨特定语言障碍（SLI）儿童对调幅和时长线索的敏感性，这些线索对于感知超音段言语节奏和重音模式很重要。
对63名7至11岁的儿童进行了测试，其中21名被诊断为SLI，21名按实际年龄与SLI样本匹配，21名按语言年龄与SLI样本匹配。所有儿童都接受了一系列非言语听觉处理任务以及语音和语言的标准化测量。
在测量对振幅包络上升时间和声音时长敏感性的听觉处理任务中，发现多达70%-80%被诊断为SLI的儿童表现低于年龄匹配对照组的第5百分位。此外，即使在控制了年龄、非言语智商和与任务相关（注意力）因素的情况下，对这些线索的敏感性个体差异仍能预测语言和读写能力的独特差异。
许多患有SLI的儿童存在听觉处理困难，但对大多数儿童来说，这些困难并非特定于短暂、快速连续的声学线索。相反，对时长和振幅包络线索的敏感性似乎更能预测语言和读写结果。这一发现现在需要在英语以外的语言中进行重复和探索。
