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Subject: It might be difficult to get a good night's sleep the night before a big interview, but we all know it helps
Excerpt: English text from the archived bilingual edition · Chinese edition
Reference text and retained source material
It might be difficult to get a good night's sleep the night before a big interview, but we all know it helps
Now, new research shows that on top of helping people perform better, getting more sleep also makes individuals appear more intelligent to teachers and prospective employers
A group of psychologists at the University of St Andrews, Scotland looked at 190 faces, belonging to children and adults
They measured how open the eyelids were and how curved the mouths were using face-processing software
A panel of more than 200 people were then asked to rate the attractiveness and intelligence of these faces
The results showed that faces with a subtle frown and dropy eyes were perceived as less intelligent
Photographs were also taken of the same participants after a full night's sleep and after a night of restricted sleep
When the same individuals had less 'eyelid-openness' and a subtle frown it resulted in a significant decrease in their perceived intelligence
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