The Development of Pointing Perception in Infancy: Effects of Communicative Signals on Covert Shifts of Attention
The Development of Pointing Perception in Infancy: Effects of Communicative Signals on Covert Shifts of Attention
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DOI：
10.1037/a0031111
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发表时间：
2013-10-01
影响因子：
4
通讯作者：
Gredeback, Gustaf
中科院分区：
文献类型：
--
作者：
Daum, Moritz M.;Ulber, Julia;Gredeback, Gustaf
本研究旨在探讨言语交际和非言语交际对幼儿手势知觉的交互作用。婴儿被展示了手指向的静止图像(线索)和声音刺激的组合。这种声音刺激的交流内容多种多样，从人的、交流的到人造的。从线索到外围目标的扫视反应时间(SRT)被测量为内隐注意调制的一个指标。显著的线索效应(与不一致的实验相比，一致的更容易的SRT)只有在有额外的交际性和指代性言语的条件下才存在。此外，声学刺激越人性化、越善于交流，提示效应的大小就越大。这表明言语交际对非言语交际手势的感知有积极的作用，强调了言语交际在促进跨领域社会理解中的重要作用。这些发现还表明，人类和交际(明示)信号在性质上与其他较少社交的信号没有什么不同，只是在数量上是其他许多信号中最能吸引注意力的。
The present study aims to investigate the interplay of verbal and nonverbal communication with respect to infants' perception of pointing gestures. Infants were presented with still images of pointing hands (cue) in combination with an acoustic stimulus. The communicative content of this acoustic stimulus was varied from being human and communicative to artificial. Saccadic reaction times (SRTs) from the cue to a peripheral target were measured as an indicator of the modulation of covert attention. A significant cueing effect (facilitated SRTs for congruent compared with incongruent trials) was only present in a condition with additional communicative and referential speech. In addition, the size of the cueing effect increased the more human and communicative the acoustic stimulus was. This indicates a beneficial effect of verbal communication on the perception of nonverbal communicative pointing gestures, emphasizing the important role of verbal communication in facilitating social understanding across domains. These findings additionally suggest that human and communicative (ostensive) signals are not qualitatively different from other less social signals but just quantitatively the most attention grabbing among a number of other signals.