If your body is not receiving a sufficient amount of sleep, this is a major factor in reducing your ability to concentrate on daily tasks.
如果你睡得不够，你每天的工作就会受到注意力不集中的影响。
2
Psychologists have found that a substantial factor accounting for this variability is the perceived degree of control that people have over their daily lives.
心理学家们已经发现了能解释这个差异的一个重要因素，那就是人们在日常生活中对控制能力的认知度。
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One in five Americans has their daily life affected by hearing loss — and earbuds blaring loud music may be just a small factor.