Harden K Paige, Turkheimer Eric, Emery Robert E, D'Onofrio Brian M, Slutske Wendy S, Heath Andrew C, Martin Nicholas G
Department of Psychology, University of Virginia, Charlottesville, VA 22902, USA.
Child Dev. 2007 Jan-Feb;78(1):1-18. doi: 10.1111/j.1467-8624.2007.00982.x.
The Children-of-Twins design was used to test whether associations between marital conflict frequency and conduct problems can be replicated within the children of discordant twin pairs. A sample of 2,051 children (age 14-39 years) of 1,045 twins was used to estimate the genetic and environmental influences on marital conflict and determine whether genetic or environmental selection processes underlie the observed association between marital conflict and conduct problems. Results indicate that genetic and nonshared environmental factors influence the risk of marital conflict. Furthermore, genetic influences mediated the association between marital conflict frequency and conduct problems. These results highlight the need for quasiexperimental designs in investigations of intergenerational associations.
采用双胞胎子女设计来检验婚姻冲突频率与行为问题之间的关联是否能在不一致双胞胎对的子女中得到重复验证。对1045对双胞胎的2051名子女(年龄在14至39岁之间)进行抽样,以估计遗传和环境对婚姻冲突的影响,并确定遗传或环境选择过程是否是婚姻冲突与行为问题之间观察到的关联的基础。结果表明,遗传因素和非共享环境因素会影响婚姻冲突的风险。此外,遗传影响介导了婚姻冲突频率与行为问题之间的关联。这些结果凸显了在代际关联研究中采用准实验设计的必要性。