这个实验测试你能否分辨真笑与假笑

在线测试地址：
http://tinyurl.com/2u7sh
这个实验测试你能否分辨真笑与假笑，大概需要花10分钟回答20个问题，该测试基于加州大学心理学家Paul Ekman教授的研究而设计，每个视频片段大概15秒，每次可以看到一张笑脸：
测试之前的两个问题：
第一问：你对生活的整体态度是悲观还是乐观7个等级；
第二问：你对自己分辨真笑和假笑能力的自信程度，7个等级；

之后，看20个15秒的视频，分辨是真笑还是假笑；

之后，要你填空回答一个问题：面部哪个部分最能帮助分辨真笑和假笑？

下面是forcode测试的结果：

Results

You got 15 out of 20 correct

Look at the labels below each image to see which smiles are genuine and which are fake.

Ticks and crosses show which smiles you got right and wrong.

Click on the image if you want to see the smile again.

Most people are surprisingly bad at spotting fake smiles. One possible explanation for this is that it may be easier for people to get along if they don't always know what others are really feeling.

Although fake smiles often look very similar to genuine smiles, they are actually slightly different, because they are brought about by different muscles, which are controlled by different parts of the brain.

真笑和假笑有细微的差别，因为二者是面部不同肌肉活动的结果，也是被大脑不同位置控制的。

Fake smiles can be performed at will, because the brain signals that create them come from the conscious part of the brain and prompt the zygomaticus major muscles in the cheeks to contract. These are the muscles that pull the corners of the mouth outwards.

Genuine smiles, on the other hand, are generated by the unconscious brain, so are automatic. When people feel pleasure, signals pass through the part of the brain that processes emotion. As well as making the mouth muscles move, the muscles that raise the cheeks – the orbicularis oculi and the pars orbitalis – also contract, making the eyes crease up, and the eyebrows dip slightly.

Lines around the eyes do sometimes appear in intense fake smiles, and the cheeks may bunch up, making it look as if the eyes are contracting and the smile is genuine. But there are a few key signs that distinguish these smiles from real ones. For example, when a smile is genuine, the eye cover fold - the fleshy part of the eye between the eyebrow and the eyelid - moves downwards and the end of the eyebrows dip slightly.

Scientists distinguish between genuine and fake smiles by using a coding system called the Facial Action Coding System (FACS), which was devised by Professor Paul Ekman of the University of California and Dr Wallace V. Friesen of the University of Kentucky.

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