This study examined the relationship between word frequency and timing of communicative gestures in children with specific language impairment (SLI) and typically-developing (TD) children. Nine children with SLI and twelve age-matched TD children produced a narrative after watching an animated cartoon. Redundant gesture-speech pairs were identified and coded for temporal alignment between gesture and speech onset and gesture duration. Word frequency for the co-occurring words was determined using the SUBTLEXus database. No significant group differences were found for temporal alignment or gesture duration. However, word frequency was associated with temporal alignment and gesture duration in TD children, but not in children with SLI. This finding suggests that the role communicative gestures play in lexical access may be different in children with SLI relative to TD children.

中文翻译：

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特定语言障碍儿童言语与手动交际手势的时间关系

本研究调查了特定语言障碍 (SLI) 和正常发育 (TD) 儿童的词频与交流手势时间之间的关系。9 名 SLI 儿童和 12 名同龄 TD 儿童在观看动画后产生了叙事。冗余手势-语音对被识别和编码，用于手势和语音开始和手势持续时间之间的时间对齐。使用 SUBTLEXus 数据库确定共现词的词频。没有发现时间对齐或手势持续时间的显着组差异。然而，词频与 TD 儿童的时间对齐和手势持续时间相关，但与 SLI 儿童无关。