It's either poverty, low attendance, negative peer influences.

原因无非是贫穷，低出席率，同龄人的坏影响。

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The initial intention was to study how much peer pressure influences teenagers' decisions - which is why Berns' team chose music their subjects were unlikely to have heard before.

这个研究的最初的目的是研究同侪压力能在多大程度上影响青少年的决定，这也就是为什么Berns的团队选择那些研究对象们以前不太可能听到的歌曲的原因。

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Burt is now investigating other environmental influences on antisocial behavior, from parenting to peer groups to the neighborhoods where kids grow up.

Burt正在研究对反社会行为的其他环境影响，从家庭养育到同龄群体到儿童时期的成长环境。

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