Li Mengjiao, Chen Jie, Li Naishi, Li Xinying
Key Laboratory of Mental Health,Institute of Psychology,Chinese Academy of Sciences,Beijing,China.
Department of Endocrinology,Key Laboratory of Endocrinology of Ministry of Health,Peking Union Medical College Hospital,Peking Union Medical College,Chinese Academy of Medical Sciences,Beijing,China.
Twin Res Hum Genet. 2014 Aug;17(4):279-87. doi: 10.1017/thg.2014.32. Epub 2014 Jun 16.
Our goal was to estimate genetic and environmental sources of influence on adolescent problematic internet use, and whether these individual differences can be explained by effortful control, an important aspect of self-regulation. A sample of 825 pairs of Chinese adolescent twins and their parents provided reports of problematic internet use and effortful control. Univariate analysis revealed that genetic factors explained 58-66% of variance in problematic internet use, with the rest explained by non-shared environmental factors. Sex difference was found, suggesting boys' problematic internet use was more influenced by genetic influences than girls' problematic internet use. Bivariate analysis indicated that effortful control accounted for a modest portion of the genetic and non-shared environmental variance in problematic internet use among girls. In contrast, among boys, effortful control explained between 6% (parent report) and 20% (self-report) of variance in problematic internet use through overlapping genetic pathways. Adolescent problematic internet use is heritable, and poor effortful control can partly explain adolescent problematic internet use, with effects stronger for boys. Implications for future research are discussed.
我们的目标是评估影响青少年问题性互联网使用的遗传和环境因素，以及这些个体差异是否可以通过自我调节的一个重要方面——努力控制来解释。825对中国青少年双胞胎及其父母参与了此次研究，他们提供了问题性互联网使用情况和努力控制的相关报告。单变量分析显示，遗传因素解释了问题性互联网使用中58%至66%的变异，其余部分由非共享环境因素解释。研究发现存在性别差异，表明男孩的问题性互联网使用比女孩更受遗传影响。双变量分析表明，努力控制在女孩问题性互联网使用的遗传和非共享环境变异中占了一定比例。相比之下，在男孩中，通过重叠的遗传途径，努力控制解释了问题性互联网使用中6%（父母报告）至20%（自我报告）的变异。青少年问题性互联网使用具有遗传性，较差的努力控制可以部分解释青少年问题性互联网使用，对男孩的影响更强。本文还讨论了对未来研究的启示。
