Table 2.

Correlations between percentage of looking to the mother’s face and infant Negative Affect, Distress, and Falling Reactivity scale scores on the Infant Behavior Questionnaire – Revised, Very Short Form (IBQ-R VSF; Putnam et al., 2014) and Infant Behavior Questionnaire – Revised (IBQ-R; Gartstein & Rothbart, 2003) at each assessment stage.

		Looking time to mother’s face
		2 weeks	4 months	6 months	9 months
2 weeks	Negative affect	0.156	− 0.039	0.197	− 0.099
	Distress	0.175	− 0.129	0.087	− 0.01
	Falling reactivity	− 0.064	0.284*	0.06	0.058
4 months	Negative affect	0.108	0.056	0.172	− 0.09
	Distress	0.155	0.112	0.324*	− 0.111
	Falling Reactivity	− 0.082	0.195	0.08	− 0.217
6 months	Negative affect	0.194	0.016	0.105	− 0.108
	Distress	0.218	− 0.016	0.078	− 0.053
	Falling reactivity	− 0.085	0.297*	0.168	− 0.205
9 months	Negative affect	0.306	0.134	− 0.102	0.087
	Distress	0.228	0.323*	− 0.047	0.02
	Falling reactivity	− 0.199	0.298*	0.454**	− 0.148

Significant correlations are in bold. **p < 0.01, *p < 0.05, two-tailed p-values.