Department of Hearing and Speech Sciences, the University of Maryland.
J Child Lang. 2020 Nov;47(6):1263-1275. doi: 10.1017/S030500091900093X. Epub 2020 Mar 11.
Aims: Although IDS is typically described as slower than adult-directed speech (ADS), potential impacts of slower speech on language development have not been examined. We explored whether IDS speech rates in 42 mother-infant dyads at four time periods predicted children's language outcomes at two years. Method: We correlated IDS speech rate with child language outcomes at two years, and contrasted outcomes in dyads displaying high/low rate profiles. Outcomes: Slower IDS rate at 7 months significantly correlated with vocabulary knowledge at two years. Slowed IDS may benefit child language learning even before children first speak.
尽管 IDS 通常被描述为比成人指导的言语（ADS）慢，但尚未研究较慢的言语对语言发展的潜在影响。我们探讨了在四个时间点的 42 个母婴对中，IDS 言语率是否预测了儿童在两岁时的语言结果。方法：我们将 IDS 言语率与儿童在两岁时的语言结果相关联，并对比显示高/低语速特征的母婴对的结果。结果：7 个月时较慢的 IDS 语速与两岁时的词汇量知识显著相关。即使在儿童首次说话之前，较慢的 IDS 也可能有益于儿童的语言学习。
