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The present study found that a lifetime history of suicidal ideation may be significantly associated with a history of searching the Internet for information about suicide or self-injury, experiences of anxiety or emotional pain related to the use of electronic media, and adolescents' distrust of the people around them. The impact of experiences using electronic media on suicidal ideation among Japanese adolescents is discussed. [ABSTRACT FROM AUTHOR]

Children are increasingly exposed to electronic media, which can potentially influence their sleep habits. However, few studies have investigated the effects of children's life patterns on sleep habits and electronic media usage. This study investigated the differences in sleep habits and electronic media usage between 18- and 42-month-old children attending nursery schools, kindergartens, or staying at home, and respectively enrolled 183 (boys, n = 93; girls, n = 90) and 215 (boys, n = 104; girls, n = 111) 18- and 42-month-old children who underwent health check-ups. We found that 18-month-old children attending nursery school had significantly earlier wake times on weekdays and shorter sleep durations on weekends than children who stayed at home despite no differences in electronic media usage. There were no differences in sleep duration among 42-month-old children attending nursery schools, kindergartens, or staying at home; however, kindergarteners demonstrated a higher use of portable and home video games. Different life patterns affect electronic media usage in preschool children, especially those attending kindergarten. Particular attention should be paid to the higher usage of electronic media devices by kindergarteners, although they had the same sleep duration, as did other preschool children.