Table 1.

The mean value, standard deviation, and correlation matrix for each variable (N=693).

	M±SD	1	2	3	4	5	6
Gender	0.48±0.50	1.00
Age	13.64±1.04	0.01	1.00
Parental attachment	1.91±0.65	0.01	0.05	1.00
Alexithymia	2.91±0.49	0.04	0.02	–0.41**	1.00
Mindfulness	3.83±0.90	0.02	–0.07	0.35**	–0.60**	1.00
MPD	2.57±0.82	–0.14**	0.14**	–0.29**	0.38**	–0.43**	1.00

^∗p < 0.05, ^∗∗p < 0.01; gender is a dummy variable, boy = 0, girl = 1, the average meant the proportion of girls; MPD, mobile phone dependence.