What did the strict study generally find about the effect of internet use on sleep? a) teens who use the internet and phone after bedtime have a variety of sleep problems. b) sleep is unaffected by internet use, as long as it is on a personal computer. c) teens sleep better with their phones at their side. d) younger teens tend to spend more time on internet devices.

a) Teens who use the Internet and phone after bedtime have a variety of sleep problems.

Explanation:

The STRICT (sleep time related information and communication technology) study performed in American adolescents showed that a high number of adolescents use their cell phone after bed time what results in insomnia, daytime sleepiness, later bedtimes and shorter sleep duration which are all sleep problems associated with the use of the cellphone and communication technology during sleep hours.

62% of the teens  used their phone after bedtime, 56.7% texted/tweeted/messaged in bed, and 20.8% awoke to texts interrupting their sleep and the quality of it.

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