Cheating on your significant either is taboo in almost all cultures,
出轨 在你看来 也许是几乎所有文化的禁忌
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翻译：niuu dear&deer 时间轴：惊惊 校对：dear&deer niuu 后 期：惊惊
yet, somehow as a flavor to the plot of movies and an inspiration for countless songs about heartbreak.
然而不知怎么的 却成了许多电影里的情节和无数伤心情歌的灵感来源
But why do people cheat in the first place?
但是首先 人为什么会出轨呢
Is there a science behind it?
其背后有没有科学依据
Only about 3% of mammals are monogamous,
仅有3%的哺乳动物是一夫一妻制
meaning they stay with one partner their whole life,
意味着它们与一个伴侣相伴一生
and humans fall into this category.
人类也属于此类
From an evolutionary perspective, it creates an advantage where one partner can protect the younglings,
从进化论的角度来看 这提供了一个便利 那就是其中一个同伴可以照顾幼婴
while the other searches for food and provide resources.
另一个可以去寻找食物资源
But somehow extra pair mating or cheating is fairly common human behavior.
然而婚外恋或出轨却成了常见的人类行为
The gene coding for dopamine receptor plays a key role in cheating for men and women,
编码多巴胺受体的基因在人类出轨这一行为中发挥关键作用
Sometimes called “the happy hormone”.
有时我们称之为 快乐荷尔蒙
It’s released after pleasurable activities like exercise, eating food and orgasming.
这类荷尔蒙会在运动 饮食 床事等一系列愉快活动之后释放出来
And one study found that 50% of people who possess the long allele variant of this gene have cheated on their partner,
一项研究表明50%拥有这类长基因的人会对伴侣不忠
compared to only 22% of people who have the short allele.
相比之下 仅有22%拥有这类短基因的人会出轨
The long allele participants also have a tendency to be risk takers and succumb to an addictive behavior such as alcoholism.
有长基因的人也有可能是冒险爱好者 并且容易染上成瘾的行为 例如酗酒
Perhaps the phrase, “once a cheater, always a cheater” may have a basis in reality.
也许 一次不忠 终身出轨 这个说法有其现实依据
Levels of the hormone vasopressin also play a role.
抗利尿激素水平对此也有影响
Similar to oxytocin which is sometimes called the cuddle hormone,
与有“抱抱荷尔蒙”之称的催产素类似
vasopressin can effect trust, empathy and social bonding.
抗利尿激素能影响人的信任度 同理心 与社会关系
In fact, injecting vasopressin directly into a polygamous mountain mole’s reward center
事实上 将抗利尿激素注入多偶制动物鼹鼠的脑部奖励中枢
increases the likelihood of becoming monogamous.
它的单偶倾向就会增大
People with autism also has lower vasopressin levels, affecting their ability to understand social cues.
自闭症患者的抗利尿激素水平也很低 这制约了他们理解社会规则的能力
And in 2014, a study involving over 7,000 Finnish twins found
2014年 一项超过7千名芬兰双胞胎参与的研究发现
that cheating women had a variant in the gene that codes for a vasopressin receptor,
出轨女性都带有编码抗利尿激素受体的变异基因
further suggesting that low levels of vasopressin has an influence on cheating.
进一步说明低抗利尿激素水平会影响出轨行为
Money may also be a factor.
金钱也是影响因素之一
Males who earn significantly more than their female counterparts are more likely to cheat.
收入比女方高许多的男性出轨的可能性更大
But they are also more likely to cheat on their wives if they are stay-at-home dads
而男方如果是家庭煮夫 也更有可能对妻子不忠
Only when both partners have similar earning potential do the chances of either cheating decrease significantly.
只有当双方收入潜能相似时 两人出轨的可能性才会大大降低
Of course, many other life factors can lead to infidelity,
当然 其他生活因素也会导致不忠
from unresolved emotional issues, baggage from past relationships, and excessive alcohol and intoxication.
如未解决的情绪问题 前任包袱 及过度饮酒纵欲
Unfortunately, same sex partnerships have not been studied enough to gain any clear insights,
遗憾的是 对同性关系出轨的研究并不多 并未得出明确的说法
highlighting how scientific research continues to exclude specific minority groups.
这说明科学研究仍将特定少数群体排除在外
Either way, cheating is clearly based in biology and genetics for some of us, in spite of being monogamous species.
不论如何 尽管人类是一夫一妻制物种 对一部分人来说出轨行为的确是基于生物基因
本字幕由广外 iDeal 翻译组 制作 更多内容请登录：idealtranslate.com
翻译：niuu dear&deer 时间轴：惊惊 校对：dear&deer niuu 后 期：惊惊