By scanning the brains of 300 people between the ages of 14 and 24, they hope to identify how the wiring that controls impulsive and emotional behaviour changes as they get older.

通过扫描300名14岁至24岁的青少年的大脑，他们希望鉴别出随着年龄的增长，控制冲动和情感行为的大脑线路有什么变化。

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Prof Bullmore expects to see changes in the brain's wiring that gradually bring impulsive behaviour under control.

BBC: Brain scan study to understand workings of teenage mind

It can also lead to concentration problems, anxiety, impulsive behaviour and depression.

ECONOMIST: A scientific row has broken out over the effects of Ecstasy