志愿者在参与实验后可以得到一定的报酬。研究人员向他们各自发放了一套工具,让他们带回家。这套工具会通过测量他们夜间的活动,以验证他们没有说谎,在原本不会睡觉的时候进入睡眠状态。
They were asked to get a good night's sleep for two consecutive nights.
志愿者被要求连续两个晚上保持良好的睡眠状态。
A week later, they were asked to restrict themselves to only four hours sleep per night for two nights in a row.
一个星期后,他们被要求将他们的睡眠时间压缩到连续两天每天仅睡四个小时。
The researchers took make-up free photos of the volunteers after both the good and the bad sleep sessions.
在志愿者进行了好的睡眠和差的睡眠之后,研究人员分别拍摄了志愿者们的素颜照片。
Next, they asked 122 strangers - women and men living in Sweden's capital city, Stockholm - to have a look at the photos and rate them on attractiveness, health, sleepiness and trustworthiness, as well as asking them: "How much would you like to socialise with this person in the picture?"
接着,研究人员召集了122名与志愿者素不相识的陌生人。他们当中有男有女,都住在瑞典首都斯德哥尔摩。这些人被要求看着志愿者的照片,对他们的魅力程度、健康状况、睡眠情况和信任程度进行评价。研究人员还会问他们一个问题:“你有多想跟照片上的这个人交朋友?”
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