Compulsive internet use
The 14-item version of the CIUS [30]was used to measure
CIU, with its Dutch phrasing slightly adjusted for adolescents.
This questionnaire (employing a five-point scale)
covers several core components typical of behavioural
addiction: withdrawal symptoms, loss of control, salience,
conflict and coping (mood modification) [30], and
includes questions such as ‘Have you unsuccessfully tried
to spend less time on the internet?’ and ‘Do you neglect to
do your homework because you prefer to go on the internet?’
The CIUS showed good validity [30] and internal
reliability [30–32], and showed good reliability in the
current samples (Cronbach’sa = 0.88 at bothT1 andT2).
Compulsive internet use
The 14-item version of the CIUS [30]was used to measure
CIU, with its Dutch phrasing slightly adjusted for adolescents.
This questionnaire (employing a five-point scale)
covers several core components typical of behavioural
addiction: withdrawal symptoms, loss of control, salience,
conflict and coping (mood modification) [30], and
includes questions such as ‘Have you unsuccessfully tried
to spend less time on the internet?’ and ‘Do you neglect to
do your homework because you prefer to go on the internet?’
The CIUS showed good validity [30] and internal
reliability [30–32], and showed good reliability in the
current samples (Cronbach’sa = 0.88 at bothT1 andT2).
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