• David S Bickham, Yulin Hswen, and Michael Rich.
• Center on Media and Child Health, Boston, USA, david.bickham@childrens.harvard.edu.
• Int J Public Health. 2015 Feb 1; 60 (2): 147-55.

ObjectivesTo determine the longitudinal and cross-sectional associations between different types of electronic media use (mobile phones, TV, computers, video games, and music) and young adolescents' depressive symptoms, and to explore the potential for household media rules to reduce young people's depression.Methods126 young adolescents were recruited from the Northeastern USA. Each type of media use was assessed using survey questions, time use diaries, and ecological momentary assessment. The Beck Depression Index for Primary Care was administered at baseline and 1 year later as part of a questionnaire that also included items assessing the presence of household rules about TV and video games.ResultsBaseline use of mobile phones and TV viewing were associated with higher levels of depression 1 year later controlling for demographic information and baseline depression score. Having household rules about TV at baseline predicted lower levels of depression at follow-up.ConclusionsBoth TV viewing and mobile phone use may contribute to the development of depressive symptoms. Implementing household rules about the duration and content of TV could help reduce depression in young adolescents.

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