In the originally published version of the article “Socioeconomic status and infant nighttime sleep across the second year of life: The moderating role of infant attachment security”, the error is in the “Table 2 continued” part of the table. The row in that section should have the numbering continued from 13 to 26 because it is a continuation of the list of variables in the correlation matrix. In “Table 2 continued” part variables in the column head are placed incorrectly.

Please find the corrected Table 2 below.

TABLE 2. Descriptive statistics and bivariate correlation of all variables included in models

	Variable	M	SD	1	2	3	4	5	6	7	8	9	10	11	12
1	Dur, 12 mos	0.14	0.92	—
2	Dur, 18 mos	0.24	0.76	.60**	—
3	Dur, 24 mos	−0.27	0.72	.50**	.59**	—
4	VSD, 12 mos	0.00	0.83	−.13	−.02	−.09	—
5	VSD, 18 mos	−0.13	0.77	−.11	−.05	−.15	.25*	—
6	VSD, 24 mos	−0.12	0.79	−.12	−.11	−.26*	.34**	.42**	—
7	Timing, 12 mos	−0.25	0.96	−.50**	−.21	−.28*	.49**	.27*	.41**	—
8	Timing, 18 mos	−0.20	0.87	−.38**	−.46**	−.45**	.48**	.41**	.34**	.74**	—
9	Timing, 24 mos	0.17	0.83	−.39**	−.29*	−.53**	.31**	.32**	.41**	.61**	.77**	—
10	VST, 12 mos	0.03	0.88	−.07	−.00	−.12	.61**	.36**	.39**	.36**	.23*	.24*	—
11	VST, 18 mos	−0.05	0.96	−.00	.03	−.05	.18	.64**	.35**	.14	.25*	.26*	.31**	—
12	VST, 24 mos	−0.12	0.82	−.16	−.15	−.21	.37**	.27*	.66**	.28**	.14	.32**	.41**	.26*	—
13	Act, 12 mos	0.31	0.96	.11	.02	−.03	−.08	−.17	−.18	−.36**	−.26*	−.10	−.06	.01	−.10
14	Act, 18 mos	0.08	0.84	.17	.17	.17	−.15	.02	−.15	−.20	−.17	−.13	−.21	.04	−.09
15	Act, 24 mos	−0.17	0.69	.13	.13	.09	.03	−.00	−.07	−.09	−.15	−.08	.09	−.05	.06
16	SOL, 12 mos	19.11	12.23	.05	−.11	.15	.14	.10	−.11	.03	.08	−.21	.20	−.11	.01
17	SOL, 18 mos	22.35	14.66	.08	.04	−.02	−.03	.15	.14	.02	.07	−.03	.02	.00	−.07
18	SOL, 24 mos	26.94	15.81	.12	.13	−.07	−.23	.01	−.18	−.25*	−.15	.04	−.11	−.04	−.16
19	Attach, 12 mos	0.41	0.23	.03	.00	.17	−.13	−.04	−.20	−.27**	−.15	−.10	−.24**	.09	−.14
20	Attach, 18 mos	0.40	0.23	−.07	.07	.09	−.06	−.25*	−.18	−.26**	−.31**	−.15	.01	−.15	−.16
21	Attach, 24 mos	0.44	0.22	−.25*	−.15	−.05	−.04	−.20	.02	−.06	−.04	−.00	−.09	−.12	.01
22	Family SES	0.02	2.38	−.03	.09	−.10	−.11	−.20	−.26*	−.20*	−.22*	−.08	−.18	−.07	−.21*
23	Dep, 12 mos	5.80	6.41	−.04	−.06	−.24*	−.01	.29**	−.03	.15	.15	.08	.03	.08	.09
24	Dep, 18 mos	6.21	6.86	.04	.07	−.18	.13	.23*	−.07	.21*	.09	.14	.19*	.20*	.20
25	Dep, 24 mos	6.38	8.05	.03	.03	−.10	.26*	.16	−.16	.21*	.17	.16	.20	.12	.07
26	Maternal racea	0.14	0.35	−.19	−.18	−.28*	−.11	−.00	.14	.27**	.13	.01	−.01	−.05	.09
27	Infant sexb	0.52	0.50	.01	.05	−.02	−.14	.03	.03	.05	.07	−.03	−.04	.01	−.12

		13	14	15	16	17	18	19	20	21	22	23	24	25	26
13	Act, 12 mos	—
14	Act, 18 mos	.46**	—
15	Act, 24 mos	.37**	.48**	—
16	SOL, 12 mos	.09	.23*	.27*	—
17	SOL, 18 mos	.04	.08	.17	.53**	—
18	SOL, 24 mos	.26*	.15	.07	.43**	.60**	—
19	Attach, 12 mos	.02	.05	.02	−.17	−.15	−.18	—
20	Attach, 18 mos	.03	−.01	.08	−.18	−.10	−.03	.49**	—
21	Attach, 24 mos	−.10	−.22*	.03	−.32**	−.23*	−.30**	.32**	.52**	—
22	Family SES	.10	.11	−.05	−.11	.01	.00	.34**	.35**	.21*
23	Dep, 12 mos	−.16	−.08	−.18	.02	−.14	−.01	−.10	−.21*	−.03	−.10
24	Dep, 18 mos	−.14	−.09	−.04	−.03	−.19	−.12	−.15	−.30**	−.18	−.18*	.76**
25	Dep, 24 mos	−.17	−.10	−.00	−.01	−.22*	−.04	−.17	−.27**	−.23*	−.21*	.56**	.68**
26	Maternal racea	−.11	−.04	−.05	.00	−.02	−.14	−.08	−.06	−.11	−.02	.16	.10	.10
27	Infant sexb	−.22*	−.19	−.24*	.11	.10	−.01	.10	.06	.16	−.01	.09	−.03	−.09	−.06

• Note: Dur, VSD, Timing, VST and Act were component scores. Infant SOL reflected in minutes.
• Abbreviations: Act, nighttime activity component; Attach, infant attachment security; Dep, maternal depressive symptoms; Dur, sleep duration component; mos, months; SES, socioeconomic status; SOL, sleep onset latency; Timing, sleep timing component; VSD, variability in sleep duration component; VST, variability in sleep timing component.
• ^a Maternal race was coded “0” for White and “1” for non-White.
• ^b Infant sex was coded "0" for boys and "1" for girls.
• * p < .05
• ** p < .01.

We regret for the error.

中文翻译：

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勘误表

在《社会经济地位和婴儿第二年夜间睡眠：婴儿依恋安全的调节作用》一文的最初发表版本中，错误出现在表格的“表2续”部分。该部分中的行的编号应从 13 继续到 26，因为它是相关矩阵中变量列表的延续。在“表 2 续”中，列标题中的部分变量放置不正确。

请查看下面更正后的表 2。

表 2.模型中包含的所有变量的描述性统计和双变量相关性

	多变的	中号	标清	1	2	3	4	5	6	7	8	9	10	11	12
1	持续时间，12 个月	0.14	0.92	—
2	持续时间，18 个月	0.24	0.76	.60**	—
3	持续时间，24 个月	−0.27	0.72	.50**	.59**	—
4	室间隔缺损，12 个月	0.00	0.83	−.13	−.02	−.09	—
5	室间隔缺损，18 个月	−0.13	0.77	−.11	−.05	−.15	.25*	—
6	室间隔缺损，24 个月	−0.12	0.79	−.12	−.11	−.26*	.34**	.42**	—
7	时间，12 个月	−0.25	0.96	−.50**	−.21	−.28*	.49**	.27*	.41**	—
8	时间，18 个月	−0.20	0.87	−.38**	−.46**	−.45**	.48**	.41**	.34**	.74**	—
9	计时，24 个月	0.17	0.83	−.39**	−.29*	−.53**	.31**	.32**	.41**	.61**	.77**	—
10	VST，12 个月	0.03	0.88	−.07	−.00	−.12	.61**	.36**	.39**	.36**	.23*	.24*	—
11	VST，18 个月	−0.05	0.96	−.00	.03	−.05	.18	.64**	.35**	.14	.25*	.26*	.31**	—
12	VST，24 个月	−0.12	0.82	−.16	−.15	−.21	.37**	.27*	.66**	.28**	.14	.32**	.41**	.26*	—
13	行动，12 个月	0.31	0.96	.11	.02	−.03	−.08	−.17	−.18	−.36**	−.26*	−.10	−.06	.01	−.10
14	行动，18 个月	0.08	0.84	.17	.17	.17	−.15	.02	−.15	−.20	−.17	−.13	−.21	.04	−.09
15	行动，24 个月	−0.17	0.69	.13	.13	.09	.03	−.00	−.07	−.09	−.15	−.08	.09	−.05	.06
16	SOL，12 个月	19.11	12.23	.05	−.11	.15	.14	.10	−.11	.03	.08	−.21	.20	−.11	.01
17 号	SOL，18 个月	22.35	14.66	.08	.04	−.02	−.03	.15	.14	.02	.07	−.03	.02	.00	−.07
18	SOL，24 个月	26.94	15.81	.12	.13	−.07	−.23	.01	−.18	−.25*	−.15	.04	−.11	−.04	−.16
19	连接，12 个月	0.41	0.23	.03	.00	.17	−.13	−.04	−.20	−.27**	−.15	−.10	−.24**	.09	−.14
20	附加，18 个月	0.40	0.23	−.07	.07	.09	−.06	−.25*	−.18	−.26**	−.31**	−.15	.01	−.15	−.16
21	附加，24 个月	0.44	0.22	−.25*	−.15	−.05	−.04	−.20	.02	−.06	−.04	−.00	−.09	−.12	.01
22	家庭社会经济地位	0.02	2.38	−.03	.09	−.10	−.11	−.20	−.26*	−.20*	−.22*	−.08	−.18	−.07	−.21*
23	出发，12 个月	5.80	6.41	−.04	−.06	−.24*	−.01	.29**	−.03	.15	.15	.08	.03	.08	.09
24	18 个月 出发	6.21	6.86	.04	.07	−.18	.13	.23*	−.07	.21*	.09	.14	.19*	.20*	.20
25	24 个月出发	6.38	8.05	.03	.03	−.10	.26*	.16	−.16	.21*	.17	.16	.20	.12	.07
26	母系种族a	0.14	0.35	−.19	−.18	−.28*	−.11	−.00	.14	.27**	.13	.01	−.01	−.05	.09
27	婴儿性别b	0.52	0.50	.01	.05	−.02	−.14	.03	.03	.05	.07	−.03	−.04	.01	−.12

		13	14	15	16	17 号	18	19	20	21	22	23	24	25	26
13	行动，12 个月	—
14	行动，18 个月	.46**	—
15	行动，24 个月	.37**	.48**	—
16	SOL，12 个月	.09	.23*	.27*	—
17 号	SOL，18 个月	.04	.08	.17	.53**	—
18	SOL，24 个月	.26*	.15	.07	.43**	.60**	—
19	连接，12 个月	.02	.05	.02	−.17	−.15	−.18	—
20	附加，18 个月	.03	−.01	.08	−.18	−.10	−.03	.49**	—
21	附加，24 个月	−.10	−.22*	.03	−.32**	−.23*	−.30**	.32**	.52**	—
22	家庭社会经济地位	.10	.11	−.05	−.11	.01	.00	.34**	.35**	.21*
23	出发，12 个月	−.16	−.08	−.18	.02	−.14	−.01	−.10	−.21*	−.03	−.10
24	18 个月 出发	−.14	−.09	−.04	−.03	−.19	−.12	−.15	−.30**	−.18	−.18*	.76**
25	24 个月出发	−.17	−.10	−.00	−.01	−.22*	−.04	−.17	−.27**	−.23*	−.21*	.56**	.68**
26	母系种族a	−.11	−.04	−.05	.00	−.02	−.14	−.08	−.06	−.11	−.02	.16	.10	.10
27	婴儿性别b	−.22*	−.19	−.24*	.11	.10	−.01	.10	.06	.16	−.01	.09	−.03	−.09	−.06

• 注：Dur、VSD、Timing、VST 和 Act 是组件分数。婴儿 SOL 以分钟为单位反映。
• 缩写：Act，夜间活动成分；依附，婴儿依附安全；Dep，产妇抑郁症状；Dur，睡眠持续时间组成部分；mos，月；SES，社会经济地位；SOL，睡眠开始潜伏期；定时、睡眠定时组件；VSD，睡眠持续时间成分的变异性；VST，睡眠时间成分的可变性。
• ^母系种族 被编码为“0”代表白人，“1”代表非白人。
• ^b 男孩的婴儿性别编码为“0”，女孩的婴儿性别编码为“1”。
• * p  < .05
• ** p  < .01。

我们对这个错误感到遗憾。