Losing just two hours of sleep a night makes people angrier, research reveals.
研究显示,每晚少睡两个小时会让人更易怒。
The study is among the first to prove a direct link with lack of shuteye, experts say.
专家称,这是首个证明生气和睡眠不足有直接联系的研究。
Previous research shows sleep loss increases negative emotions, such as anxiety and sadness, and decreases positive emotions, including happiness and enthusiasm.
之前的研究表明,睡眠不足会增加消极情绪,如焦虑和悲伤,减少积极情绪,包括幸福和热情。
But researchers at Iowa State University found losing sleep raised anger directly -- not just as a result of feeling more negative. Their findings were published in the Journal of Experimental Psychology.
但爱荷华州立大学的研究人员发现,睡眠不足会直接引发愤怒,而不仅仅是感觉更消极。他们的研究结果发表在《实验心理学杂志》上。
Participants were split into two groups. One kept to their normal sleep routine while the other had theirs cut by two to four hours each night for two nights.
参与实验者被分成两组。一组保持正常的睡眠习惯,另一组连续两晚每晚减少两到四个小时的睡眠时间。
The first group had almost seven hours of sleep a night, while the restricted group got about four and a half hours.
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