. Author manuscript; available in PMC: 2022 Nov 14.

Published in final edited form as: J Child Psychol Psychiatry. 2021 May 16;63(2):152–164. doi: 10.1111/jcpp.13429

Table 4.

Summary of hierarchical regression analysis predicting middle central NC mean amplitude for happy faces (N=142)

Variable	ß	b (SE)	CI_95%	t	R	R²	ΔR²
Block 1					.105	.011	.011
Infant Age (days)	−.101	−.006 (.005)	[−.015, .004]	−1.182
Infant Neg Emo	−.023	.178 (.655)	[−1.117, 1.473]	.271
Mat Dep Symptoms	.024	.030 (.106)	[−.180, .239]	.279
Block 2					.322	.103	.092^*
Infant Age (days)	−.083	−.005 (.005)	[−.014, .005]	−2.403
Infant Neg Emo	.112	.853 (.651)	[−.435, 2.141]	1.309
Mat Dep Symptoms	.245	.304 (.125)	[.057, .552]	2.437
Maternal Anxiety	−.391	−.274 (.073)	[−.419, −.130]	−3.755^*

p < .001; Infant Neg Emo = Infant Negative Emotionality; Mat Dep Symptoms = Maternal Depression Symptoms