Effectiveness of a universal school-based programme for preventing depression in Chinese adolescents: a quasi-experimental pilot study.

Background: Evidence of the effectiveness, rather than efficacy, of universal school-based programmes for preventing depression among adolescents is limited. This study examined the effectiveness of a universal depression prevention programme, "The Little Prince is Depressed" (LPD), which adopted the cognitive-behavioural model and aimed to reduce depressive symptoms and enhance protective factors of depression among secondary school students in Hong Kong.

Methods: A quasi-experimental design was adopted for this pilot study.

Internet addiction: prevalence, discriminant validity and correlates among adolescents in Hong Kong.

Background: Despite increasing concern over the potential adverse effects of excessive internet use, especially in young people, there is some debate over its definition, magnitude and discriminant validity.

Aims: To examine the prevalence of adolescents' internet addiction in Hong Kong, China; to test its differentiation from other correlates; and to examine its relationships with correlates in a representative community sample of adolescents.

Method: A two-wave panel household survey with 208 adolescents (aged 15-19 years) was conducted.