Genetic similarity shared by best friends among adolescents
Genetic similarity shared by best friends among adolescents
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DOI：
10.1375/183242706776402920
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发表时间：
2006-02-01
影响因子：
0.9
通讯作者：
Guo, G
中科院分区：
文献类型：
--
作者：
Guo, G
两个观察结果表明亲密朋友之间存在遗传相似性：(1)观察到的朋友之间在某些特征和行为上的相似性；(2)许多这些特征和行为都有遗传成分的证据。这一假设是通过来自国家青少年健康纵向研究（Add Health）的单卵双胞胎（MZ）、异卵双胞胎（DZ）、完全亲生兄弟姐妹和他们最好的朋友来验证的。从平均成绩（GPA）、AHPVT（专为Add Health设计的Peabody图片词汇测试[PPVT]）、攻击行为和抑郁4个个体特征或行为方面考察了MZ双胞胎的朋友之间是否比DZ双胞胎和全兄妹的朋友之间更相似。我们的假设在同性朋友（而不是异性朋友）的GPA、攻击行为和AHPVT分析中得到了支持。
Two observations suggest a genetic similarity among close friends: (1) the observed similarity among friends in certain traits and behaviors; (2) the evidence that many of these traits and behaviors have a genetic component. This hypothesis is tested using monozygotic (MZ) twins, dizygotic (DZ) twins, full biological siblings, and their best friends from the National Longitudinal Study of Adolescent Health (Add Health). Whether the resemblance between MZ twins' friends is larger than that between friends of DZ twins and full siblings is investigated with respect to 4 individual traits or behaviors: grade point average (GPA), AHPVT (the version Peabody Picture Vocabulary Test [PPVT] designed for Add Health), aggressive behavior, and depression. Our hypothesis is supported in analyses among same-sex friends (not among different-sex friends) for GPA, aggressive behavior, and AHPVT.