Exit Ticket – Screen Time (02/13 & 02/14)

What is the author’s main purpose in Screen Time Can Mess With the Body’s “Clock”?

•  to explain possible effects of using certain electronic devices before trying to sleep

• to describe the effects of too much sleep on the way people feel during the day

• to persuade people that electronic devices are better than print books

• to explain why many people have stopped reading print books

Which quotation from the article best supports the answer in PART A?

• An internal “clock” helps regulate when we eat, sleep and wake. Exposure to the light of day and darkness of night keeps its timing set to a roughly 24-hour cycle. (paragraph 4)

• Scientists long have known that light at night can disrupt that internal clock. And it does so by suppressing melatonin. (paragraph 6)

• People took nearly 10 minutes longer to fall asleep, on average, after reading on the iPads. They also spent less time in rapid-eye movement (or REM) sleep. (paragraph 10)

• Lighting scientist Mariana Figueiro calls the study thorough. She also finds its results unsurprising. (paragraph 13)