They study pairs of identical twins who grew up in different surroundings, like Jim Springer and Jim Louis.

他们研究了像吉姆·施普林格和吉姆·路易斯一样在不同环境中长大的同卵双胞胎。

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Over two decades 137 sets of twins eventually visited Thomas Bouchard's lab in what became known as the Minnesota Study of Twins Reared Apart.

在20多年的时间里，最终有137对双胞胎拜访了托马斯·布沙尔的实验室，这就是后来著名的“明尼苏达双胞胎实验”。

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The question when we see exceptions, whether it's the Lykken and Tellegen study, not all twins were the same, the question is no longer whether or not change is possible, but rather how is change possible.

当我们看到了例外，无论是在Lykken和Tellegen的研究，当发现不是所有的双胞胎都一样，已不再是，改变是否有可能，而是怎样实现这种改变。

哈佛公开课 - 幸福课课程节选

If the first six months of a child's life matter as much as most people think they do, then spending even that short time together could influence the result of a twins study.

ECONOMIST: WHAT WE LEARN FROM TWINS

Maybe Galton's classic twins study was invalid: perhaps you cannot look at the similarities between identical twins, and those between non-identical ones, and conclude that the difference must necessarily be due to genes.

ECONOMIST: WHAT WE LEARN FROM TWINS: The mirror of your soul | The

Scientists trying to determine whether genetic or environmental factors influence disease risk often study twins.

BBC: NEWS | Health | Alzheimer's risk 'is 80% genetic'