Time machines: a promising attempt to reduce TV watching.

摘要

The health consequences of the time that children spend with electronic media have, for now, generated more concerns than actual data. It is not rare today to find a teenager simultaneously viewing TV and browsing a video on the internet while, at least apparently, also doing homework. Typically, teenagers watch about 2 h of TV per weekday and 3 h during the weekend (Biddle et al., 2004). More autonomous children in families for whom regular TV viewing is routine are likely to watch more than 2 h of TV per day and to spend more than 1 h per day playing computer games (Jago et al., 2008).