Evidence against perceptual bias views for symmetry preferences in human faces
Evidence against perceptual bias views for symmetry preferences in human faces
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DOI：
10.1098/rspb.2003.2445
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发表时间：
2003-09-07
影响因子：
4.7
通讯作者：
Jones, BC
中科院分区：
文献类型：
--
作者：
Little, AC;Jones, BC
对称的人脸很有吸引力。对于对称偏好，人们提出了两种解释：(i)进化优势观点，该观点认为对称有助于提高配偶质量；（ii）感知偏见观点，该观点认为对称偏好是视觉系统更容易处理对称图像的结果。在这里，我们表明，当面部图像是直立的时候，对称偏好比倒立的时候更大。这是反对简单的感性偏见观点的证据，该观点认为对称偏好应该在垂直轴的方向上保持不变。我们还表明，即使在熟悉的面孔中，对称也更受青睐，这一发现出乎知觉偏见观点的意料，他们认为对称之所以有吸引力，只是因为它代表了那类特定刺激的熟悉原型。
Symmetrical human faces are attractive. Two explanations have been proposed to account for symmetry preferences: (i) the evolutionary advantage view, which posits that symmetry advertises mate quality and (ii) the perceptual bias view, which posits that symmetry preferences are a consequence of greater ease of processing symmetrical images in the visual system. Here, we show that symmetry preferences are greater when face images are upright than when inverted. This is evidence against a simple perceptual bias view, which suggests symmetry preference should be constant across orientation about a vertical axis. We also show that symmetry is preferred even in familiar faces, a finding that is unexpected by perceptual bias views positing that symmetry is only attractive because it represents a familiar prototype of that particular class of stimuli.