Kato T, et al. - The association between delayed bedtimes at 6 years old and the excessive use of electronic devices at 12 years of age was evaluated in this study, with emphasis on texting. Delayed bedtime at the age of six years was found to be related to excessive texting at weekends. As per the outcomes, 6-year-olds who regularly stayed up late at night were found to use electronic devices more frequently, or for longer, at the age of 12. They recommended parents to be more aware of links between sleep issues and electronic devices.