Table 4.

The evening ratings of happiness—results of the mixed models analysis of the null model and fixed effects random intercept model.

Model	Predictors	−2RLL	Estimates of fixed effects					Estimates of covariance parameters
			EST	SE	df	F	Sig.	ICC	Wald Z across subjects	Wald Z within subjects	R2 change Level 1	R2 change Level 2
The null model	Intercept	3732	2.43	0.06	109.24	1722.76	0.00	35.54%	6.52**	26.42**
The fixed effects models	Intercept	3562	1.31	0.09	683.31	202.90	0.00	30.06%	6.27**	26.40**	10.43%	30.17%
	Mean momentary happiness		0.54	0.04	1495.66	205.58	0.00
	Intercept	3565	1.35	0.31	174.30	19.05	0.00	27.04%	5.87**	26.36**	3.60%	16.87%
	Mean momentary happiness		0.71	0.07	1493.89	92.34	0.00
	Age		0.01	0.00	304.66	1.64	0.20
	Tiredness		−0.14	0.03	1486.85	31.78	0.00
	Age*daily emotion		−0.01	0.00	1462.99	8.62	0.00
	N		−0.00	0.00	100.12	4.54	0.04
	E		0.01	0.00	102.09	19.31	0.00
	O		−0.00	0.00	100.17	0.57	0.45
	A		−0.00	0.00	98.95	1.42	0.24
	C		−0.00	0.00	100.18	0.04	0.85

^**p < 0.001; N, neuroticism; E, extraversion; O, openness to experience; A, agreeableness; C, conscientiousness; −2RLL refers to −2 Restricted Log Likelihood.