The development of infant discrimination of affect in multimodal and unimodal stimulation: The role of intersensory redundancy
The development of infant discrimination of affect in multimodal and unimodal stimulation: The role of intersensory redundancy
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DOI：
10.1037/0012-1649.43.1.238
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发表时间：
2007-01-01
影响因子：
4
通讯作者：
Bahrick, Lorraine E.
中科院分区：
文献类型：
--
作者：
Flom, Ross;Bahrick, Lorraine E.
本研究探讨了婴儿在双模态（视听）和单模态（听觉和视觉）显示的女性讲话中感知情感能力的发展过程。根据感觉间冗余假说（L。e.巴里克河Lickliter，& R. Flom，2004），在多模态刺激中促进了非模态特性的检测，并且在单峰刺激中减弱。然而，在发展的后期，注意力变得更加灵活，并且在多模态和单峰刺激中都可以感知到非模态特性。作者通过评估3个月、4个月、5个月和7个月大的婴儿对情感的辨别能力来测试这些预测。结果表明，在双峰刺激，歧视的影响出现了4个月，并保持稳定的年龄。然而，在单峰刺激，检测的影响逐渐出现，与听觉刺激出现在5个月和视觉刺激在7个月的敏感性。面孔和声音之间进一步的时间同步对于幼儿的情感辨别是必要的。在整个发育过程中，婴儿首先通过检测非模态特性来感知多模态刺激中的情感，然后他们的情感感知扩展到单模态听觉和视觉刺激。对社会发展的影响，包括共同关注和社会参考，考虑。
This research examined the developmental course of infants' ability to perceive affect in bimodal (audiovisual) and unimodal (auditory and visual) displays of a woman speaking. According to the intersensory redundancy hypothesis (L. E. Bahrick, R. Lickliter, & R. Flom, 2004), detection of amodal properties is facilitated in multimodal stimulation and attenuated in unimodal stimulation. Later in development, however, attention becomes more flexible, and amodal properties can be perceived in both multimodal and unimodal stimulation. The authors tested these predictions by assessing 3-, 4-, 5-, and 7-month-olds' discrimination of affect. Results demonstrated that in bimodal stimulation, discrimination of affect emerged by 4 months and remained stable across age. However, in unimodal stimulation, detection of affect emerged gradually, with sensitivity to auditory stimulation emerging at 5 months and visual stimulation at 7 months. Further temporal synchrony between faces and voices was necessary for younger infants' discrimination of affect. Across development, infants first perceive affect in multimodal stimulation through detecting amodal properties, and later their perception of affect is extended to unimodal auditory and visual stimulation. Implications for social development, including joint attention and social referencing, are considered.