Categorical perception of facial expressions by 7-month-old infants
Categorical perception of facial expressions by 7-month-old infants
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DOI：
10.1068/p3155
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发表时间：
2001-01-01
期刊：
影响因子：
1.7
通讯作者：
Johnson, MH
中科院分区：
文献类型：
--
作者：
Kotsoni, E;de Haan, M;Johnson, MH
最近的研究表明，成年人对面部表情的情感表现出分类感知。我们不知道这是从生命最初几周就存在的感知的基本特征，还是随着感知和解释表达的经验逐渐出现的特征。我们报告了两个实验，旨在调查是否年幼的婴儿，像成年人一样，表现出分类的面部表情知觉。7个月大的婴儿被展示了来自恐惧和快乐两个原型的插值（变形）面部表情的摄影质量连续体。在第一个实验中，我们使用了视觉偏好技术来识别婴儿在快乐和恐惧之间的类别边界。在第二个实验中，我们使用了熟悉-视觉-偏好相结合的技术来比较婴儿对身体上同样不同但跨越或不跨越情感类别边界的成对表情的区分。结果表明，7个月大的婴儿（i）表现出对面部表情的分类感知的证据，（ii）表现出对恐惧表情的持续兴趣。
Recent research indicates that adults show categorical perception of facial expressions of emotion. It is not known whether this is a basic characteristic of perception that is present from the earliest weeks of life, or whether it is one that emerges more gradually with experience in perceiving and interpreting expressions. We report two experiments designed to investigate whether young infants, like adults, show categorical perception of facial expressions. 7-month-old infants were shown photographic quality continua of interpolated (morphed) facial expressions derived from two prototypes of fear and happiness. In the first experiment, we used a visual-preference technique to identify the infants' category boundary between happiness and fear. In the second experiment, we used a combined familiarisation-visual-preference technique to compare infants' discrimination of pairs of expressions that were equally physically different but that did or did not cross the emotion-category boundary. The results suggest that 7-month-old infants (i) show evidence of categorical perception of facial expressions of emotion, and (ii) show persistent interest in looking at fearful expressions.