Several experts said asserting oneself requires skills that can be learned at any age, regardless of a person's emotional background.

一些专家说自我表达需要技巧，这在任何年纪都可以学会，无论一个人的情绪由何引起。

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Research has also found that family background plays a role. Typically, people who are easily angered come from families that are disruptive, chaotic, and not skilled at emotional communication.

研究还发现，家庭背景在个人处理愤怒的问题上骑着某种作用。易怒的人通常来自不和睦的、混乱的且不善于情感交流的家庭。

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In this theoretical background, ethnic identity to be seen as a simple family ties, which is from the foundation of the emotional ties of natural selection is only the inevitable outcome.

在此理论背景下，族群认同被简单地看作是亲缘关系，其来自于根基性的情感联系，仅仅是基因自然选择的必然结果。

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Among many other potential effects we examined family socioeconomic background, intelligence as measured by the Graduate Management Admissions Test, emotional intelligence, participation rate in athletics and other activities, whether people started working a part-time job early in life, and military service, if any.

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