BACKGROUND
While a striking rise in shared physical custody after divorce has been observed in Wisconsin and some European countries, the same trend in shared custody has not been documented in US national data.

OBJECTIVE
We provide new evidence on the time trend in shared physical custody after divorce in the United States.

METHODS
We use eight waves of data from the Current Population Survey – Child Support Supplement to estimate logit models and conduct a formal decomposition.

RESULTS
The likelihood of shared physical custody after divorce more than doubled in the United States from before 1985 until 2010–2014, from 13% to 34%. Non-linear probability (logit) models show that non-Hispanic Whites and more advantaged individuals are more likely to report shared physical custody. Both sequential multivariate models and a more formal decomposition show that the increase cannot be explained by changes in the characteristics of those divorcing; rather we find that several characteristics become more strongly associated with shared physical custody over time.

CONCLUSIONS
Our results suggest that shared physical custody is increasing in the United States as a whole, and this increase appears to reflect changing norms and policies that favor shared custody. These changing patterns have important implications for children’s living arrangements and for the parental investments that children receive after their parents’ divorce – and more broadly for the rise in inequality across families over recent decades.



中文翻译：

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在美国离婚后共同监护权的增加（丹尼尔·迈耶、玛西娅·卡尔森、莫希·乌尔阿拉姆医学博士）

背景
虽然在威斯康星州和一些欧洲国家观察到离婚后共同监护权的显着增加，但美国国家数据中没有记录到共同监护权的相同趋势。

目的
我们为美国离婚后共同监护权的时间趋势提供新的证据。

方法
我们使用来自当前人口调查 - 儿童抚养费补充的八波数据来估计 logit 模型并进行正式分解。

结果
从 1985 年之前到 2010-2014 年，在美国，离婚后共同监护的可能性增加了一倍多，从 13% 增加到 34%。非线性概率 (logit) 模型表明，非西班牙裔白人和更有优势的个人更有可能报告共同的身体监护权。顺序多元模型和更正式的分解都表明，离婚人数的增加不能用离婚者特征的变化来解释；相反，我们发现随着时间的推移，一些特征与共享物理监护权的关系变得更加密切。

结论
我们的研究结果表明，整个美国共享物理监护权正在增加，这种增长似乎反映了有利于共享监护权的规范和政策的变化。这些不断变化的模式对孩子的生活安排和孩子在父母离婚后获得的父母投资具有重要影响，更广泛地说，对近几十年来家庭之间不平等的加剧具有重要影响。