Facial expression megamix: Tests of dimensional and category accounts of emotion recognition
Facial expression megamix: Tests of dimensional and category accounts of emotion recognition
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DOI：
10.1016/s0010-0277(97)00003-6
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发表时间：
1997-06-01
期刊：
影响因子：
3.4
通讯作者：
Perrett, DI
中科院分区：
文献类型：
--
作者：
Young, AW;Rowland, D;Perrett, DI
我们报告了四个实验，调查的感知摄影质量连续的插值（“变形”）的面部表情来自原型的6种情绪在Ekman和弗里森（1976年）系列（幸福，惊讶，恐惧，悲伤，厌恶和愤怒）。在实验1中，变形的图像从所有可能的成对组合的表情，以随机顺序呈现;主题确定这些属于不同的表达类别对应的原型在相关的连续体的每一端，这一结果被复制在实验2中，其中还包括变形的原型与中性的表达，并允许“中性”作为响应类别。这些发现是不一致的，认为面部表情是通过定位他们沿着两个基本的维度，因为这样的观点预测，至少有一些类别之间的过渡应该涉及中性区域，或识别为不同的情绪。相反，他们认为基本情绪的面部表情是通过它们与离散类别的匹配来识别的。实验3使用连续涉及6种情绪，以证明最好的歧视对跨越类别边界的刺激，这提供了进一步的证据，分类感知的面部表情的情绪。然而，在实验1和实验2中，反应时间数据表明，从原型的距离增加有一定的成本的能力，以确定在所产生的变形脸的情感。此外，实验4表明，受试者有一些洞察到哪些情绪混合创造特定的变形图像。因此，分类知觉效应被发现，即使科目是敏感的物理性质，这些变形的面部表情。我们认为，快速分类的原型和更好的跨边界的可辨别性反映了人类分类能力的基本组织。
We report four experiments investigating the perception of photographic quality continua of interpolated ('morphed') facial expressions derived from prototypes of the 6 emotions in the Ekman and Friesen (1976) series (happiness, surprise, fear, sadness, disgust and anger). In Experiment 1, morphed images made from all possible pairwise combinations of expressions were presented in random order; subjects identified these as belonging to distinct expression categories corresponding to the prototypes at each end of the relevant continuum, This result was replicated in Experiment 2, which also included morphs made from a prototype with a neutral expression, and allowed 'neutral' as a response category. These findings are inconsistent with the view that facial expressions are recognised by locating them along two underlying dimensions, since such a View predicts that at least some transitions between categories should involve neutral regions or,identification as a different emotion. Instead, they suggest that facial expressions of basic emotions are recognised by their fit to discrete categories. Experiment 3 used continua involving 6 emotions to demonstrate best discrimination of pairs of stimuli falling across category boundaries; this provides further evidence of categorical perception of facial expressions of emotion. However, in both Experiment 1 and Experiment 2, reaction time data showed that increasing distance from the prototype had a definite cost on ability to identify emotion in the resulting morphed face. Moreover, Experiment 4 showed that subjects had some insight into which emotions were blended to create specific morphed images. Hence, categorical perception effects were found even though subjects were sensitive to physical properties of these morphed facial expressions. We suggest that rapid classification of prototypes and better across boundary discriminability reflect the underlying organisation of human categorisation abilities.