Peer groups represent a critical developmental context in adolescence, and there are many well-documented associations between personality and peer behavior at this age. However, the precise nature and direction of these associations are difficult to determine as youth both select into, and are influenced by, their peers.

中文翻译：

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青春期的人格和同龄人群体：相互关联以及共同的遗传和环境影响


同侪群体代表了青春期的一个重要的发展背景，并且这个年龄段的人格和同侪行为之间存在许多有据可查的关联。然而，这些协会的确切性质和方向很难确定，因为年轻人既选择同龄人，又受到同龄人的影响。