Table 1.

Two-factorial GADIS-P items with corresponding ICD-11 and DSM-5 criteria

ICD-11 criteria		GADIS-P items
(Corresponding DSM-5 Item)		Thinking of the last 12 months, how strongly do you agree with the following statements?
A	Impaired control over gaming (e.g., onset, frequency, intensity, duration, termination, context).	1	My child often plays games more frequently and longer than he/she planned to or agreed upon with me or my partner.a
(Unsuccessful attempts to reduce or stop gaming.)		2	My child often cannot stop gaming even though it would be sensible to do so or for example I have told him/her to stop.a
B	Increasing priority given to gaming to the extent that gaming takes precedence over other life interests and daily activities.	3	My child often does not pursue interests outside the digital world (e.g., meeting friends or partner in real life, attending sports clubs/societies, reading books, making music) because he/she prefers gaming.a
(Giving up other activities.)		4	My child neglects daily duties (e.g., grocery shopping, cleaning, tidying up after himself/herself, tidying his/her room, obligations for school/apprenticeship/job) because he/she prefers gaming.a
C	Continuation or escalation of gaming despite the occurrence of negative consequences.	5	My child usually continues gaming even though it causes him/her stress with others (e.g., with me or my partner, siblings, friends, partner, teachers).a
(Continuation of gaming despite problems.)		6	My child continues gaming although it harms his/her performance at school/apprenticeship/job (e.g., by being late, not participating in class, neglecting homework, worse grades).a
D	The behavior pattern is of sufficient severity to result in significant impairment in personal, family, social, educational, occupational or other important areas of functioning.	7	Due to gaming, my child neglects his/her appearance, personal hygiene, and/or health (e.g., sleep, nutrition, exercise).a
		8	Due to gaming, my child risks losing important contacts (friends, family, partner) or have lost them already.a
(Risking or losing relationships or career opportunities due to excessive gaming.)		9	Due to gaming, my child has disadvantages at school/apprenticeship/job (e.g., bad [final] grades, inability to continue to the next grade/no graduation, no apprenticeship or university spot, poor reference, warning/dismissal).a
E	The pattern of gaming behavior may be continuous or episodic and recurrent and normally evident over a period of at least 12 months.	10	How often did your child experience such problems, conflicts, or difficulties due to gaming during the past year? Did this only occur on single days, during longer periods of several days to weeks, or was it almost daily?b

Notes:

^aResponse options: 5-point Likert-Scale: “strongly disagree” – “strongly agree”.

^bResponse options: “not at all”, “only on single days”, “during longer periods”, “almost daily”.