Since parental differential treatment is related to more adjustment difficulties over and above main effects of parental treatment, it is important to understand under what conditions differential parenting is likely to occur. Using a within-family design, this study focused on between-sibling differences in parent-child personality similarity as a potential predictor of differential autonomy support from fathers and mothers. Longitudinal data (6 annual waves) of 497 target adolescents (56.9% boys, Mage at T₁ = 13.03), one of their siblings (N = 416, Mage at T₁ = 14.92), their fathers (N = 446, Mage at T₁ = 46.74), and their mothers (N = 495, Mage at T₁ = 44.41) were used. Parent-child personality similarity was determined based on distinctive profile correlations using the Big Five personality inventory. Structural Equation Modeling showed that the association between sibling differences in mother-child similarity and maternal autonomy support was positive and significant at the between-family level, and not at the within-family level. This means that, in families where one sibling was relatively more similar to the mother, the sibling with closer resemblance to the mother received relatively more autonomy support. No significant effects were found for fathers' differential autonomy support. The present study highlights the importance of considering parent-child similarity in personality for understanding differences between siblings in maternal autonomy support. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

中文翻译：

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亲子性格相似性和对兄弟姐妹的不同自主支持。

由于父母差别待遇与父母待遇的主要影响之外的更多调整困难有关，因此了解在什么条件下可能发生差别养育很重要。本研究采用家庭内部设计，重点关注兄弟姐妹之间亲子性格相似性的差异，作为父亲和母亲差异自主支持的潜在预测因素。497 名目标青少年（56.9% 男孩，T₁ = 13.03）、他们的兄弟姐妹之一（N = 416，T1 = 14.92）、他们的父亲（N = 446，T1 = 46.74）和他们的母亲（N = 495，T1 时的 Mage = 44.41）被使用。亲子性格相似性是根据使用大五人格清单的独特个人资料相关性确定的。结构方程模型表明，母子相似度的兄弟姐妹差异与母亲自主支持之间的关联在家庭间水平上是正向且显着的，而不是在家庭内水平上。这意味着，在一个兄弟姐妹与母亲相对更相似的家庭中，与母亲更相似的兄弟姐妹获得了相对更多的自主支持。没有发现父亲的差异自主支持有显着影响。本研究强调了考虑亲子性格相似性对于理解兄弟姐妹之间在母亲自主支持方面差异的重要性。（PsycInfo 数据库记录 (c) 2022 APA，保留所有权利）。