Research press release


Scientific Reports

Psychology: Toddler touchscreen use is associated with less sleep



今回、Tim Smithたちの研究グループは、2015年6月から2016年3月までの期間中に生後6~36か月の乳幼児715人の親を対象として、インターネットを使った調査を行った。この調査では、親が自分の子の日中と夜間の平均睡眠時間、入眠までの所要時間、夜間に目を覚ます頻度を申告した。この調査の結果、タッチスクリーンの使用時間が長い乳幼児は、夜間の睡眠時間が減り、日中の睡眠時間が増えて、総睡眠時間が減ったことが判明した。タブレット型パソコンの使用時間が1時間長くなると、総睡眠時間が15.6分短くなっていた。(平均で夜間の睡眠時間が26.4分短くなり、日中の睡眠時間が10.8分長くなった。)また、タッチスクリーンの使用は、乳幼児の入眠所要時間の増加とも関連していたが、夜間に目を覚ました回数との関連性は認められなかった。こうした影響を確認するには、今後の研究で睡眠トラッキングのような客観性の高い計測値が必要とされる。

Increased daily use of touchscreen devices by infants and toddlers is associated with a decrease in the total amount of sleep they get according to a study in Scientific Reports. However, further studies are needed to clarify what effects touchscreen use may have and the mechanisms that may underlie this association.

In recent years family ownership of touchscreen devices has risen rapidly and reports from 2016 indicate that 86% of UK family homes have access to the internet, mainly via portable media devices. However, the potential impact of touchscreen use on toddler development has been unclear.

Tim Smith and colleagues carried out an online survey involving the parents of 715 infants and toddlers aged between six and 36 months from June 2015 until March 2016. Parents were asked to report the average duration of their child’s daytime and night-time sleep, the time taken for their child to fall asleep, and the frequency of night awakenings. The authors found that babies and toddlers who spent more time using a touchscreen slept less at night and, despite sleeping more during the day, slept for less time overall. Every additional hour of tablet use was associated with 15.6 minutes less total sleep (on average 26.4 minutes less night-time sleep and 10.8 minutes more of daytime sleep). Touchscreen use was also associated with an increase in the time it took for children to fall asleep; however, no link was found to the number of times children woke up during the night although more objective measures such as sleep tracking are needed in future studies to confirm these effects.

doi: 10.1038/srep46104


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