Table 5.

Well-Being and Fear of COVID-19 by Intervention at each time point (F, p, η_p² and and Post hocs)

	Main effect of intervention			Post hoc
	F(3,145)	p	ηp2
T1 Social Connectedness	3.34	.021	.07	2, 3 > 4* d = 0.36, d = 0.43
T1 Self-Esteem	2.80	.041	.06	1, 2, 3 > 4* d = 0.35, d = 0.30, d = 0.45
T1 Optimism	2.52	.061	.05
T1 Meaning	2.52	.060	.05
T1 Happiness	0.98	.406	.02
T1 Fear of COVID-19	4.42	.005	.09	4 > 1, 2* d = 0.60, d = 0.45 3 > 1* d = 0.54
T2 Social Connectedness	2.70	.048	.05	2 > 1** d = 0.31
T2 Self-Esteem	1.48	.224	.03
T2 Optimism	1.98	.119	.04
T2 Meaning	0.23	.878	.01
T2 Happiness	0.25	.861	.01
T2 Fear of COVID-19	2.92	.068	.06	4 > 1* d = 0.56
T3 Social Connectedness	0.45	.715	.01
T3 Self-Esteem	0.89	.447	.02
T3 Optimism	0.40	.751	.01
T3 Meaning	0.80	.494	.02
T3 Happiness	0.06	.979	.00
T3 Fear of COVID-19	3.69	.013	.07	4 > 1, 2** d = 0.55, d = 0.49
T4 Social Connectedness	0.76	.521	.02
T4 Self-Esteem	1.50	.218	.03
T4 Optimism	1.53	.210	.03
T4 Meaning	1.76	.158	.04
T4 Happiness	0.62	.603	.01
T4 Fear of COVID-19	3.64	.014	.07	4 > 1, 2, 3* d = 0.57, d = 0.44, d = 0.42

1 = nostalgia, 2 = gratitude, 3 = BPS, 4 = control. *p < 0.05, **p < 0.01, ***p < 0.001