Screen Time Can Mess with the Body’s ‘Clock’

According to “Screen Time Can Mess with the Body’s ‘Clock,’” why do experts recommend against using electronic readers and similar devices when going to bed?

• The light from the screen can upset the body’s internal clock.

• Reading is too stimulating for people who are trying to sleep.

• The screen can catch fire and cause serious injuries and even death.

• People are too tempted to engage in social media if the screen is on.

According to “Screen Time Can Mess with the Body’s ‘Clock,’” what is the purpose of melatonin? Choose two options.

• It gets the body ready to sleep.

• It makes the body alert and restless.

• It tells the body that darkness has fallen.

• It increases the body’s resistance to sleep.

• It helps the brain awaken from a deep sleep.

In “Screen Time Can Mess with the Body’s ‘Clock,’” the author describes a study comparing the effects of reading on an electronic device before bed with the effects of reading printed books. What were the effects of reading on the electronic device? Choose three options.

• People took longer to become alert the next morning.

• People had deeper sleep.

• People awoke feeling more rested.

• People took longer to fall asleep.

• People felt more tired in the morning.

What concern did lighting scientist Mariana Figueiro express about the study in Boston, as explained in 'Screen Time Can Mess with the Body’s ‘Clock’'?

• The results might not apply in real life.

• The scientists involved did not look at all the facts.

• The study might not lead people to change their behavior.

• The information could cause a drop in the sale of tablet computers.

Identify the choice that best answers the question. Based on context, choose the correct meaning of consecutive.

• happening occasionally

• beginning after a delay

• taking place at unusual times

• following one another without stopping

Use context clues to determine the most likely meaning of environment as it is used in this quotation by sleep researcher Anne-Marie Chang in 'Screen Time Can Mess with the Body’s ‘Clock.’'

• beliefs

• reasons

• beginnings

• setting

Choose the most likely meaning of previously as it is used in this passage from 'Screen Time Can Mess with the Body’s 'Clock.' Use context clues to help you.

• with great interest

• in a friendly way

• at an earlier time

• at the same time

Part A: Given the details in 'Screen Time Can Mess with the Body’s 'Clock.,' choose the most likely long-term effect of using an e-reader before bed.

• Many people may stop trying to sleep.

• A small number of people may sleep too much.

• Most people may not have any long-term issues.

• Some people may develop serious medical issues.

Part A: What was the author’s most likely purpose for writing “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