California School of Professional Psychology.
Division of Developmental Medicine, Boston Children's Hospital.
Dev Psychol. 2018 Jul;54(7):1265-1276. doi: 10.1037/dev0000506. Epub 2018 Apr 16.
The present study examined the effects of socioeconomic status (SES) and sibling differences in birth weight on sibling differences in the receipt of maternal sensitivity (i.e., differential parenting). It was hypothesized that sibling differences in birth weight would predict absolute differential parenting across the sibship (i.e., the more different siblings' birth weight, the more different the level of sensitivity in the family, overall) and child-specific differential parenting (i.e., relatively heavier siblings receiving more sensitivity, compared to his or her counterpart within the family). It was also hypothesized that there would be greater sibling differences in birth weight in lower SES settings. Multiparous mothers were recruited within two weeks of childbirth and filmed interacting with each of their children when younger siblings were 1.60 years (SD = .16, N = 396 younger siblings) and next-older siblings were 4.05 (SD = .75; N = 396 older siblings). Videotapes were coded for maternal sensitivity. Multilevel path-analysis revealed that lower-SES families exhibited greater sibling differences in birth weight, which corresponded to greater absolute differential parenting. Also, heavier siblings received relatively higher levels of sensitivity within the family. This study demonstrates that child and contextual factors operate together in predicting differential parenting. (PsycINFO Database Record
本研究考察了社会经济地位 (SES) 和兄弟姐妹之间出生体重的差异对母亲敏感性（即差异化育儿）方面的兄弟姐妹差异的影响。研究假设，兄弟姐妹之间的出生体重差异将预测整个兄弟姐妹群体中绝对差异化育儿的情况（即，兄弟姐妹的出生体重差异越大，家庭中敏感性的水平差异就越大）和儿童特定的差异化育儿（即，与家庭中的对应者相比，相对较重的兄弟姐妹会受到更多的敏感性）。研究还假设，SES 较低的环境中兄弟姐妹之间的出生体重差异会更大。在孩子出生后两周内，招募了多胎母亲，并在他们的每个孩子 1.60 岁（SD =.16，N = 396 名年幼的兄弟姐妹）和下一个年龄较大的兄弟姐妹 4.05 岁（SD =.75；N = 396 名年长的兄弟姐妹）时拍摄他们与每个孩子互动的视频。视频被编码为母亲的敏感性。多层次路径分析显示，SES 较低的家庭中兄弟姐妹之间的出生体重差异更大，这对应于更大的绝对差异化育儿。此外，家庭中较重的兄弟姐妹会受到相对较高水平的敏感性。这项研究表明，儿童和环境因素共同作用预测差异化育儿。
