Even if a pattern of behaviour is almost universal, we can't know in advance if it is a law of nature we cannot change or simply a remnant of our primitive past that we can and should modify.

即使一种行为模式是近乎普世的，我们也无法预先知道它究竟是一个我们不能改变的自然法则，还是只是一种我们能够并且应该改变的原始陋习。

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It is easy to direct a child's pattern of behaviour by reinforcing good behaviour with some kind of reward.

通过给予儿童某种奖励巩固他们的良好行为来指导儿童的行为模式，这是比较容易做到的。

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Detectives tracked down a number of ex-girlfriends, who all described a similar pattern of behaviour when they got involved with him.

BBC: Milly Dowler killer Levi Bellfield 'controlling and evil'

And they will not change the overall pattern of behaviour in California.

ECONOMIST: Road-pricing in California

Police described the killer as behaving ruthlessly, but without much logic, a pattern of behaviour they suggest is not consistent with a professional hitman.

BBC: French Alps murders: Cyclist 'was shot first'