Categorical perception of facial expressions: Categories and their internal structure
Categorical perception of facial expressions: Categories and their internal structure
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DOI：
10.1080/026999397380005
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发表时间：
1997-01-01
影响因子：
2.6
通讯作者：
Benson, PJ
中科院分区：
文献类型：
--
作者：
deGelder, B;Teunisse, JP;Benson, PJ
面部表情的判断是否显示典型的分类知觉模式的问题进行了研究，使用三组11张照片，每个构成一个II步骤连续体之间延伸两个极端的原型范例：愤怒悲伤，快乐悲伤和愤怒害怕，分别。对于每个连续体，使用变形程序创建中间样本。受试者首先确定所有的面孔，在每个连续的极端的表情，然后进行了ABX歧视任务的面孔对两个步骤（实验1和2）或三个步骤（实验3）分开。经典的分类知觉预测，歧视性能必须达到峰值附近的点上的连续识别达到50%的测试不是组的手段，在早期的研究中，但受试者的基础上。成人（实验1）和9- 10岁儿童（实验3）的结果都支持这一结论。对于成年人，两个非分类的解释的主要发现被丢弃，表明它是不重复与相同的材料颠倒（实验2）。
The question whether judgements of facial expression show the typical pattern of categorical perception was examined using three sets of 11 photographs, each constituting an Ii-step continuum extending between two extreme protypical exemplars: angry-sad, happy-sad and angry-afraid, respectively. For each continuum, intermediate exemplars were created using a morphing procedure. Subjects first identified all faces in each continuum in terms of the extreme expressions, and then performed an ABX discrimination task on pairs of faces two steps (Experiments 1 and 2) or three steps (Experiment 3) apart. The classical categorical perception prediction that discrimination performance must peak around the point on the continuum at which identification reaches 50% was tested not on group means, as in earlier studies, but on a subject-by-subject basis. It was supported by the results for both adults (Experiment 1) and 9- to 10-year-children (Experiment 3). For adults, two noncategorical interpretations of the main finding were discarded by showing that it was not replicated with the same material presented upside down (Experiment 2).