Table 3.

Mixed Effects Regression Contrast Models on Negative Mood Variability, for the Total Sample and by Gender

	TOTAL					GIRLS						BOYS
	N	Estimate	SE	t	p	N (observations)	Estimate	SE	t	p	d	N (observations)	Estimate	SE	t	p	d
Contrast 1	148					87 (174)						61 (122)
Intercept		1.64	.05	30.96	.000		1.70	.07	25.20	.000			1.56	.08	19.02	.000
Time		-0.13	.05	-2.53	.012		-0.18	.07	-2.47	.015			-0.07	.07	-0.92	ns
Group		0.09	.12	0.72	ns		0.24	.15	1.58	ns			-0.16	.19	-0.81	ns
Group × Time		-0.06	.12	-0.53	ns		-0.09	.17	-0.53	ns	0.14		-0.02	.17	-0.13	ns	0.04
Contrast 2	66					39 (78)						27 (54)
Intercept		1.60	.09	17.27	.000		1.67	.11	15.41	.000			1.52	.15	10.13	.000
Time		0.08	.09	0.86	ns		0.14	.13	1.07	ns			0.00	.13	-0.03	ns
Group		0.13	.14	0.88	ns		0.28	.16	1.69	ns			-0.12	.24	-0.50	ns
Group × Time		-0.28	.15	-1.92	.059		-0.41	.20	-2.04	.048	-0.66		-0.09	.20	-0.44	ns	0.2
Contrast 3	154					87 (174)						67 (134)
Intercept		1.52	.06	26.75	.000		1.72	.07	23.13	.000			1.27	.08	16.02	.000
Time		-0.14	.06	-2.26	.025		-0.18	.09	-1.97	.052			-0.09	.08	-1.13	ns
Group		0.08	.11	0.71	ns		-0.05	.15	-0.36	ns			0.25	.16	1.52	ns
Group × Time		0.22	.12	1.78	.077		0.32	.18	1.80	.076	0.44		0.08	.16	0.53	ns	0.2

Note. Contrast 1: Triers/Experimenters v. Rapid Escalators; Contrast 2: Smokers v. Rapid Escalators; Contrast 3: Nonsmokers v. Smokers. Observations = number of mood reports examined.

Effect sizes for Group × Time effects calculated via Cohen’s d.