The Pennsylvania State University, University Park, Pennsylvania, USA.
Child Dev. 2022 May;93(3):845-861. doi: 10.1111/cdev.13723. Epub 2021 Dec 28.
This study examined socioeconomic status (SES) and attachment security as predictors of infant nighttime sleep during the second year. Participants included 128 mothers (86% White) with infants (48.4% boys). Data collection took place between April, 2009 and February, 2014. At 12, 18, and 24 months, infant sleep was assessed via actigraphy and daily diaries, and attachment with the Attachment Q-Set. SES indicators included income-to-needs ratios and education. Lower SES predicted greater variability in sleep duration and later sleep timing only for less secure infants. Less secure attachment was associated with poorer sleep at both between- and within-person levels, especially when infants were 12 months of age. Results emphasize the complex interactive effects of environmental and relational factors on infant sleep.
本研究考察了社会经济地位（SES）和依恋安全性作为婴儿第二年夜间睡眠的预测指标。参与者包括 128 名母亲（86%为白人）和婴儿（48.4%为男孩）。数据收集于 2009 年 4 月至 2014 年 2 月进行。在 12、18 和 24 个月时，通过活动记录仪和每日日记评估婴儿的睡眠情况，并使用依恋 Q 集评估依恋情况。SES 指标包括收入需求比和教育程度。较低的 SES 仅对不太安全的婴儿预测了睡眠时间和入睡时间的更大变异性。不太安全的依恋与个体内和个体间的睡眠质量较差都有关，尤其是当婴儿 12 个月大时。研究结果强调了环境和关系因素对婴儿睡眠的复杂交互影响。
