第一组每晚差不多睡7个小时，而限制睡眠组每晚睡大约4个半小时。

The difference was designed to reflect what people regularly experience in everyday life.

设计这种差异是为了反映人们在日常生活中经常经历的情况。

Both groups were then asked to rate different products while listening to irritating noise. The researchers said this was meant to create uncomfortable conditions and provoke feelings of anger.

两组参与者被要求在听恼人的噪音的同时给不同产品评分。研究人员称，这样做是为了营造不舒服的环境，激起愤怒的情绪。

study leader professor Zlatan Krizan said: "In general, anger was substantially higher for those who were sleep restricted."

研究负责人兹拉坦·克里萨教授表示：“总的来说，那些睡眠不足的人的愤怒情绪要高得多。”

"We manipulated how annoying the noise was during the task and, as expected, people reported more anger when the noise was more unpleasant. When sleep was restricted, people reported even more anger, regardless of the noise."

“我们对实验过程中噪音的干扰程度进行了调控，结果不出所料，当噪音更恼人时，人们会表现得更愤怒。当睡眠不足时，不管是否有噪音，人们会表现得更愤怒。”

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