The effect of smartphone addiction on the relationship between psychological stress reaction and bedtime procrastination in young adults during the COVID-19 pandemic

Table 2 Bias of mediating moderating effect of psychological stress reaction on bedtime procrastination

Variables	Model 1: (Calibration: Smartphone addiction)			Model 2: (Calibration: bedtime procrastination)
Variables	β	SE	t	β	SE	t
Age	0.030	0.013	2.283*	0.071	0.012	6.101***
Sex	0.019	0.058	0.321	0.168	0.052	3.213**
Psychological Stress Reaction	0.213	0.033	6.433***	0.225	0.030	7.403***
Family Cohesion	-0.071	0.030	-2.391*	-0.108	0.028	-3.895***
Psychological Stress Reaction × Family Cohesion	0.142	0.026	5.357***	0.061	0.025	2.467*
Smartphone addiction				0.231	0.027	8.662***
Smartphone addiction × Family Cohesion				0.088	0.029	3.067**
R²	0.062			0.239
F	15.945***			54.332***

ISSN: 1471-244X