Previous research has documented that youth in joint physical custody (JPC) often report fewer mental health problems than peers in other postseparation living arrangements. Whether JPC is associated with functional outcomes such as academic achievement has been less examined, and existing work has relied on self-reported school grades and pertinent controls such as parental education. Using data from the Norwegian population-based youth@hordaland study (n = 7,914), we examined the association between living arrangements and academic achievement among youth (16-19 years) using register-based information on grade point average (GPA; range: 1-6), parental education, and income. We also assessed the influence of family cohesion and coresiding biological and half/stepsiblings in explaining differences between youth in JPC and other living arrangements. Across all regression models, youth in JPC had significantly higher GPA (0.2-0.4 points) than youth living with a single mother or father. Parental education had a strong attenuating effect and reduced the magnitude of the difference with 30%-35% for youth in single-parent families and 55% for youth in stepparent families. In conclusion, we find that youth in JPC have a small but significant academic advantage compared to peers in single-parent families, which is not fully accounted for by objective measures of parental education and income, sibling composition, and family cohesion. Future longitudinal studies are needed to disentangle whether positive outcomes associated with JPC are due to inherent qualities of this living arrangement or better captured by preseparation selection mechanisms. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

中文翻译：

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青年人的共同监护权和学业成就：一项基于人口的登记关联研究。

先前的研究表明，与处于其他分居后生活安排的同龄人相比，处于联合人身监护 (JPC) 中的青少年报告的心理健康问题通常更少。JPC 是否与学业成绩等功能性结果相关的研究较少，现有工作依赖于自我报告的学校成绩和父母教育等相关控制。我们使用基于挪威人口的 youth@hordaland 研究（n = 7,914）的数据，使用基于登记的平均绩点信息（GPA；范围： 1-6)、父母教育和收入。我们还评估了家庭凝聚力和同居亲生和同父异母/继兄弟姐妹对解释 JPC 青年与其他生活安排之间差异的影响。在所有回归模型中，JPC 中的年轻人的 GPA（0.2-0.4 分）明显高于与单身母亲或父亲生活在一起的年轻人。父母教育具有很强的衰减作用，单亲家庭青少年的差异幅度降低了 30%-35%，继父母家庭青少年的差异幅度降低了 55%。总而言之，我们发现，与单亲家庭的同龄人相比，少年儿童保护中心的年轻人在学业上有微小但显着的优势，而父母教育和收入、兄弟姐妹构成和家庭凝聚力等客观指标并没有充分说明这一点。需要未来的纵向研究来弄清楚与 JPC 相关的积极结果是由于这种生活安排的内在品质还是由预分离选择机制更好地捕获。（PsycInfo 数据库记录 (c) 2022 APA，