Hou Jinqin, Chen Zhiyan, Natsuaki Misaki N, Li Xinying, Yang Xiaodong, Zhang Jie, Zhang Jianxin
Chinese Academy of Sciences, Beijing, China.
Twin Res Hum Genet. 2013 Jun;16(3):698-706. doi: 10.1017/thg.2013.24. Epub 2013 May 10.
Non-shared parenting and deviant peer affiliation are linked to differences in externalizing behaviors between twins. However, few studies have examined these two non-shared environments simultaneously. The present study examined the transactional roles of differential parenting (i.e., warmth and hostility) and deviant peer affiliation on monozygotic (MZ) twin differences in externalizing behaviors using a two-wave longitudinal study of twins and their parents. The sample consisted of 520 pairs of MZ twins (46.5% males, 53.5% females), with a mean age of 13.86 years (SD = 2.10) at the T1 assessment, residing in Beijing, China. The association between non-shared hostility in parenting and adolescent externalizing behaviors was mainly explained by a child-driven effect whereby the twin with a higher level of externalizing behaviors than his or her co-twin was more likely to receive more hostility from the parents. Similarly, the relationship between deviant peer affiliation and adolescent externalizing behaviors supported the selection effect whereby the twin with a higher level of externalizing behaviors than his or her co-twin was more likely to affiliate with deviant peers. The theoretical and practical implications of these findings are discussed.
非共享养育和不良同伴关系与双胞胎外化行为的差异有关。然而，很少有研究同时考察这两种非共享环境。本研究使用对双胞胎及其父母的两波纵向研究，考察了差异养育（即温暖和敌意）和不良同伴关系对同卵双胞胎（MZ）外化行为差异的交互作用。样本包括520对同卵双胞胎（46.5%为男性，53.5%为女性），在T1评估时平均年龄为13.86岁（标准差=2.10），居住在中国北京。养育中不共享的敌意与青少年外化行为之间的关联主要由儿童驱动效应解释，即外化行为水平高于其双胞胎的一方更有可能从父母那里得到更多敌意。同样，不良同伴关系与青少年外化行为之间的关系支持选择效应，即外化行为水平高于其双胞胎的一方更有可能与不良同伴交往。讨论了这些发现的理论和实践意义。
