Study finds ADHD from digital media

Why would Jean M. Twenge encourage teens who are heavy digital media users to give up their devices?

• She believes the lack of sleep from heavy media use is causing ADHD symptoms.

• She believes the study shows it could cut the risk for ADHD symptoms in half.

• She believes ADHD is caused by changes to the brain that cannot change back.

• She believes only students with ADHD will overuse digital media and screen time.

Which of the following MOST influenced scientists' conclusions that there is a link between online time and ADHD?

• the fact that the brain disorder is increasingly being diagnosed in older teens as well as adults

• the finding that teens who were online the most were more than twice as likely to show symptoms

• the belief that the presence of digital media at any time of day might keep the brain from resting

• the belief that some of the teens might have had undiagnosed symptoms before the study began

Read the following paragraph from the section "2,587 Kids Studied Over Two-Year Period."

Four out of 5 students acknowledged "high-frequency use" of at least one activity. Those included 54 percent who told researchers they checked social media "many times per day." Just over two-thirds engaged in high-frequency use of up to four online activities at some point during the study.

Which phrase helps the reader to understand what the study authors meant by "high-frequency use"?

• Four out of 5 students

• included 54 percent

• many times per day

• at some point during

Read the following paragraph from the section "Some Skeptical Of Study's Findings."

"It's seductive to think that TV and video games and social media change the brain," he added. "Maybe they do. But if that's the case, the brain can change back."

Why does Lawrence Diller use the word "seductive"?

• to convey the sense that this thinking is tempting but unwise

• to convey the sense that these ideas should be kept a secret

• to convey the sense that he admires the findings of the study

• to convey the sense that he admires the findings of the study

Which word goes with "uneasy"?

• restless

• criteria

• furious

• delighted

Which word goes with "guidelines"?

• investigators

• criteria

• punishment

• flaws