Table 1.

Items, response distributions, and standardized factor loadings for the Parental version of the Young Diagnostic Questionnaire (PYDQ) in a representative sample of parents of adolescents aged 12–17 years (n = 964)

		Relative response frequencies (%)	Standardized factor loadings
		No/Yes
Item 1	Does your child feel preoccupied with the Internet (think about previous online activity or anticipate next online session)?	80.6	0.61
19.4
Item 2	Does your child feel the need to use the Internet with increasing amounts of time in order to achieve satisfaction?	87.9	0.77
12.1
Item 3	Has your child repeatedly made unsuccessful efforts to control, cut back, or stop Internet use?	89.5	0.60
10.5
Item 4	Does your child feel restless, moody, depressed, or irritable when attempting to cut down or stop Internet use?	77.1	0.75
22.9
Item 5	Does your child stay online longer than originally intended?	49.8	0.65
50.2
Item 6	Has your child jeopardized or risked the loss of a significant relationship, job, educational, or career opportunity because of the Internet?	92.4	0.67
7.6
Item 7	Has your child lied to family members, a therapist, or others to conceal the extent of involvement with the Internet?	84.3	0.66
15.7
Item 8	Does your child use the Internet as a way of escaping from problems or of relieving a dysphoric mood (e.g., feelings of helplessness, guilt, anxiety, depression)?	87.6	0.65
12.4