Table 2.

Description of the instruments.

Instrument		Mean (SD)	Cronbach alpha	95% CI
Compulsive Internet Use Scale		14.64 (9.84)	.89	0.89-0.91
Sexual Desire Inventory		70.83 (17.66)	.87	0.84-0.90
Short Depression-Happiness Scale		11.29 (4.38)	.86	0.83-0.90
Experiences in Close Relationships-Revised questionnaire
	Anxious attachment	3.39 (1.33)	.92	0.91-0.94
	Avoidant attachment	3.07 (1.04)	.89	0.86-0.91
UPPS-Pa Impulsive Behavior Scale
	Positive urgency	10.44 (2.57)	.74	0.67-0.81
	Negative urgency	8.64 (3.04)	.86	0.82-0.89
	Lack of premeditation	7.45 (2.64)	.80	0.75-0.85
	Lack of perseverance	7.34 (2.66)	.84	0.80-0.88
	Sensation seeking	11.31 (2.70)	.80	0.74-0.85
Single-Item Self-Esteem Scale		2.61 (0.83)	—b	—

^aUrgency, Premeditation (lack of), Perseverance (lack of), Sensation Seeking, Positive Urgency.

^bNot applicable.