来自《耶鲁大学开放课程：心理学导论第20集第20集》

And some people talk in

有些人探讨过
terms of a genetically determined set point.

遗传决定因素
So, you have a sort of natural happiness level,

你本有一个自然幸福水平
maybe a range.

可能是一个范围
To put it in extreme form,

说得极端些
some people are genetically predisposed to be pretty sour,

有些人天生苦闷
others to be pretty cheerful.

有些人天生开朗
Well, that can't be it.

也不绝对
Identical twins are very similar in their happiness but,

同卵双胞胎幸福感相似
as with everything else we've discussed,

但加上我们说的其它所有因素
they're not identical. What about life events?

他们就会变得不一样比如人生大事
Wouldn't life events change your happiness?

人生大事不会改变人的幸福感吗