Table 6.

Multi-level regression of infant dwell times on threat-relevant (versus happy) emotional expressions, parent gender, age group, and parental dwell times (N = 210)

Fixed Effects	Numerator df	Denominator df	F	p
Intercept	1	209.47	0.31	0.577
Parent Gender (mother versus father)	1	209.57	1.03	0.311
Age group (12 and 18 versus 6-month-olds)	2	210.71	9.45	< 0.001
Emotion (threat-relevant versus happy)	2	328.02	14.53	< 0.001
Parental Dwell Times	1	431.43	4.91	0.027
Estimates of Fixed Effects
Parameter	ß	SE	df	t	p	95% Confidence Intervals
						Lower Bound	Upper Bound
Intercept	-0.25	0.13	225.20	-1.85	0.066	-0.51	0.02
Mother (vs. Father)	-0.13	0.13	209.57	-1.02	0.311	-0.39	0.13
12 versus 6-month-olds	0.44	0.15	209.48	2.96	0.003	0.15	0.73
18 versus 6-month-olds	0.65	0.15	211.56	4.24	< 0.001	0.35	0.94
Angry versus Happy	-0.13	0.04	211.03	-3.09	0.002	-0.22	-0.05
Fearful versus Happy	0.09	0.04	344.62	2.22	0.027	0.01	0.18
Parental Dwell Times	0.11	0.05	431.43	2.22	0.027	0.01	0.21
Estimates of Covariance Parameters			SE	Wald Z	p	Lower Bound	Upper Bound
Repeated Measures	AR1 diagonal	0.19	0.02	9.70	< 0.001	0.16	0.24
	AR1 rho	0.04	0.10	0.35	0.730	-0.17	0.24
Intercept [subject = ID]	Variance	0.70	0.08	9.14	< 0.001	0.57	0.87

df degrees of freedom, F F-value, p = significance level, ß Beta, SE Standard Error, t t-value