摘要目的:根据家庭系统理论探讨亲子关系对初中生内化问题的影响，以及自尊的中介作用和同胞关系的调节作用。方法:2021年4—6月对565名非独生子女进行调查，采用同胞关系问卷、亲子亲合量表、自尊量表、内化问题问卷进行研究。SPSS 26.0进行描述性统计和Pearson相关分析，PROCESS宏程序进行中介和调节效应分析。结果:母子亲合与自尊和同胞亲密呈正相关( r＝0.36，0.58；均 P<0.01)，而与内化问题和同胞冲突呈负相关( r＝－0.29，－0.25；均 P<0.01)。父子亲合与自尊和同胞亲密呈正相关( r＝0.37，0.51；均 P<0.01)，而与内化问题和同胞冲突呈负相关( r＝－0.36，－0.21；均 P<0.01)。自尊在母子亲合-自尊-内化问题这一路径中发挥部分中介作用( β＝－0.09, 95% CI＝－0.14~－0.05)，中介效应占总效应的30.13%；自尊在父子亲合-自尊-内化问题这一路径中也发挥部分中介作用( β＝－0.07, 95% CI＝－0.11~－0.04)，中介效应占总效应的25.36%。同胞亲密关系能够增强母子亲合对自尊的积极影响( β＝0.06，95% CI＝0.01~0.11)，而抵消较低的母子亲合水平对内化问题的消极作用( β＝0.10, 95% CI＝0.04~0.16)；同胞冲突关系在母子亲合对自尊和内化问题的影响中没有显著预测作用。同胞亲密关系能够增强父子亲合对自尊的积极影响( β＝0.05, 95% CI＝0.01~0.09)，而抵消较低的父子亲合水平对内化问题的消极作用( β＝0.09，95% CI＝0.03~0.15)；但是同胞冲突关系能够减少父子亲合对自尊的积极作用( β＝－0.05, 95% CI＝－0.09~－0.01)，而在父子亲合对内化问题的影响中没有显著作用。 结论:亲子亲合除了直接影响初中生的内化问题外，还通过自尊间接影响内化问题。较高的亲子亲合水平和亲密的同胞关系，有助于提高个体的自尊水平，并在一定程度上减少内化问题的发生。

abstractsObjective:To explore the effect of self-esteem and sibling relationships on the links of parental cohesion and internalizing problems in junior high school students based on the family system theory.Methods:A total of 565 junior high school students were investigated with the sibling relationship questionnaire, parent-child cohesion questionnaire, self-esteem scale and internalizing problems questionnaire from April to June 2021.SPSS 26.0 was used for descriptive statistics and Pearson correlation analysis.PROCESS was used to examine the mediating and moderating effect.Results:Maternal-child cohesion was positively correlated with self-esteem and sibling warmth ( r=0.36, 0.58, both P<0.01), while it was negatively correlated with internalizing problems and sibling conflict ( r=-0.29, -0.25, both P<0.01). Similarly, paternal-child cohesion was positively correlated with self-esteem and sibling warmth ( r=0.37, 0.51, both P<0.01), and it was negatively correlated with internalizing problems and sibling conflict ( r=-0.36, -0.21, both P<0.01). The self-esteem played a partial mediating role between maternal-child cohesion and internalizing problems ( β=-0.09, 95% CI=-0.14--0.05), and the mediating value was 30.13%.The self-esteem also played a partial mediating role between paternal-child cohesion and internalizing problems ( β=-0.07, 95% CI=-0.11--0.04), and the mediating value was 25.36%.Sibling warmth could improve the positive effect of maternal-child cohesion on self-esteem ( β=0.06, 95% CI=0.01-0.11), while could offset the negative effects of low level of maternal-child cohesion against the internalizing problems ( β=0.10, 95% CI=0.04-0.16). But sibling conflict did not significantly predict the effects of maternal-child cohesion on self-esteem and internalizing problems.Similarly, sibling warmth could improve the positive effect of paternal-child cohesion on self-esteem ( β=0.05, 95% CI=0.01-0.09), while could offset the negative effects of low level of paternal-child cohesion against the internalizing problems ( β=0.09, 95% CI=0.03-0.15). But sibling conflict could reduce the positive impact of paternal-child cohesion and self-esteem ( β=-0.05, 95% CI=-0.09--0.01), while had no effect on the impact of paternal-child cohesion and internalizing problems. Conclusion:Parent-child cohesion not only directly affects the internalizing problems, but also indirectly affects the internalizing problems through the self-esteem.Positive parent-child cohesion and sibling warmth relationships can improve the individual's self-esteem level and reduce the internalizing problems.