Horic-Asselin David, Brosseau-Liard Patricia, Gosselin Pierre, Collin Charles A
School of Psychology, University of Ottawa, 136 Jean-Jacques Lussier Vanier Hall, Ottawa, Ontario, K1N 6N5, Canada.
Atten Percept Psychophys. 2020 Oct;82(7):3648-3657. doi: 10.3758/s13414-020-02080-5.
We presented participants with videos of Duchenne smiles that differed in the duration of their onset, offset, or both to determine if this would affect perceived expression authenticity. The duration of onset and offset varied between 0.2 and 1.0 s. Participants were shown one smile at a time and were asked to judge its genuineness on a rating scale. Results indicated the duration of offset had an effect on perceived genuineness when it was manipulated in isolation. Similarly, when both the offset and onset duration were adjusted concomitantly, genuineness ratings were affected. There was no effect of onset duration when it was manipulated in isolation. This is the first demonstration of these effects using photographs of real human faces that are dynamically and morphologically symmetrical, and which have been validated via the Facial Action Coding System.
我们向参与者展示了杜兴式微笑的视频，这些微笑在起始、结束或两者的持续时间上有所不同，以确定这是否会影响对表情真实性的感知。起始和结束的持续时间在0.2秒到1.0秒之间变化。每次向参与者展示一个微笑，并要求他们在评分量表上判断其真实性。结果表明，当单独操纵结束持续时间时，它会对感知到的真实性产生影响。同样，当同时调整结束和起始持续时间时，真实性评分也会受到影响。当单独操纵起始持续时间时，没有影响。这是首次使用动态和形态对称的真实人脸照片证明这些效果，并且这些照片已经通过面部动作编码系统得到验证。
