Yale Child Study Center, Yale University School of Medicine, New Haven, Connecticut, USA.
Department of Psychology, Florida International University, Miami, Florida, USA.
Infancy. 2023 May;28(3):569-596. doi: 10.1111/infa.12533. Epub 2023 Feb 9.
Intersensory processing of social events (e.g., matching sights and sounds of audiovisual speech) is a critical foundation for language development. Two recently developed protocols, the Multisensory Attention Assessment Protocol (MAAP) and the Intersensory Processing Efficiency Protocol (IPEP), assess individual differences in intersensory processing at a sufficiently fine-grained level for predicting developmental outcomes. Recent research using the MAAP demonstrates 12-month intersensory processing of face-voice synchrony predicts language outcomes at 18- and 24-months, holding traditional predictors (parent language input, SES) constant. Here, we build on these findings testing younger infants using the IPEP, a more comprehensive, fine-grained index of intersensory processing. Using a longitudinal sample of 103 infants, we tested whether intersensory processing (speed, accuracy) of faces and voices at 3- and 6-months predicts language outcomes at 12-, 18-, 24-, and 36-months, holding traditional predictors constant. Results demonstrate intersensory processing of faces and voices at 6-months (but not 3-months) accounted for significant unique variance in language outcomes at 18-, 24-, and 36-months, beyond that of traditional predictors. Findings highlight the importance of intersensory processing of face-voice synchrony as a foundation for language development as early as 6-months and reveal that individual differences assessed by the IPEP predict language outcomes even 2.5-years later.
社交事件的感觉间处理（例如，视听语音的视听匹配）是语言发展的关键基础。最近开发的两种协议，多感觉注意评估协议（MAAP）和感觉间处理效率协议（IPEP），以足够精细的粒度评估感觉间处理的个体差异，以预测发展结果。使用 MAAP 的最近研究表明，12 个月的面孔-声音同步的感觉间处理可预测 18 个月和 24 个月的语言结果，同时保持传统预测因素（父母语言输入、SES）不变。在这里，我们使用 IPEP 对年龄更小的婴儿进行测试，这是一种更全面、更精细的感觉间处理指数，进一步扩展了这些发现。使用 103 名婴儿的纵向样本，我们测试了 3 个月和 6 个月时面孔和声音的感觉间处理（速度、准确性）是否可以预测 12 个月、18 个月、24 个月和 36 个月的语言结果，同时保持传统预测因素不变。结果表明，6 个月时（而非 3 个月时）的面孔和声音的感觉间处理在 18 个月、24 个月和 36 个月的语言结果中解释了显著的独特差异，超过了传统预测因素的解释。这些发现强调了 6 个月时面孔-声音同步的感觉间处理作为语言发展基础的重要性，并表明 IPEP 评估的个体差异甚至在 2.5 年后也能预测语言结果。
