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Doctors Say We Should Let Students Sleep in Longer

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Here’s a scientific suggestion most kids will be pleased with: doctors say school should start later so students can sleep in.

In a new statement in the journal of Pediatrics, the American Academy of Pediatrics says “chronic sleep loss has increasingly become the norm” for kids. Their pathological tiredness is so bad, it’s comparable to that in people suffering from actual sleep disorders. Indeed, more than 85% of America’s high school students are walking around with less than the recommended 8.5 hours of sleep on a day to day basis. And constantly having heavy eyelids can lead to snoozing when kids should be learning. Nearly 30% of students say they fall asleep during school every week, according to one poll by the National Sleep Foundation. For older kids, there’s an added danger of nodding off at the wheel. On top of all that, kids are turning to stimulants like coffee or taking prescription drugs to combat their exhaustion.

But believe it or not, most teens aren’t a bunch of lazy bones by choice. When we hit puberty, we become night owls thanks to a delayed release of melatonin, the chemical in our brains that controls our sleep cycles. As a result, our bodies want us to go to bed and wake up about two hours later than before. This can be a difficult adjustment for kids who don’t feel the pull of sleep until midnight and then have to rise at 6:00 in the morning to get to school an hour later, but that’s exactly what’s happening.

This is exactly why doctors are now urging schools to delay their start time until after 8:00 am to accommodate kids’ natural sleep cycles. Right now, only about 15% of all high schools start after 8, but a handful are heeding the doctors’ advice, and it’s paying off. Research published earlier this year from the University of Minnesota in St Paul showed that later start times improve grades, test scores, and lower teen car accidents by a dumbfounding 65 to 70 percent.

So just how late could start times get? “Anything is better than 8 am,” Russell Foster, a professor of circadian neuroscience at the University of Oxford, told New Scientist. “Moving to 8:30 will make a difference, but a 10 o'clock start would be even better.”

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What Pop Culture Gets Wrong About Dissociative Identity Disorder
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From the characters in Fight Club to Dr. Jekyll and Mr. Hyde, popular culture is filled with "split" personalities. These dramatic figures might be entertaining, but they're rarely (if ever) scientifically accurate, SciShow Psych's Hank Green explains in the channel's latest video. Most representations contribute to a collective misunderstanding of dissociative identity disorder, or DID, which was once known as multiple personality disorder.

Experts often disagree about DID's diagnostic criteria, what causes it, and in some cases, whether it exists at all. Many, however, agree that people with DID don't have multiple figures living inside their heads, all clamoring to take over their body at a moment's notice. Those with DID do have fragmented personalities, which can cause lapses of memory, psychological distress, and impaired daily function, among other side effects.

Learn more about DID (and what the media gets wrong about mental illness) by watching the video below.

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Scientists Reveal Long-Hidden Text in Alexander Hamilton Letter
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Age, deterioration, and water damage are just a few of the reasons historians can be short on information that was once readily available on paper. Sometimes, it’s simply a case of missing pages. Other times, researchers can see “lost” text right under their noses.

One example: a letter written by Alexander Hamilton to his future wife, Elizabeth Schuyler, on September 6, 1780. On the surface, it looked very much like a rant about a Revolutionary War skirmish in Camden, South Carolina. But Hamilton scholars were excited by the 14 lines of writing in the first paragraph that had been crossed out. If they could be read, they might reveal some new dimension to one of the better-known Founding Fathers.

Using the practice of multispectral imaging—sometimes called hyperspectral imaging—conservationists at the Library of Congress were recently able to shine a new light on what someone had attempted to scrub out. In multispectral imaging, different wavelengths of light are “bounced” off the paper to reveal (or hide) different ink pigments. By examining a document through these different wavelengths, investigators can tune in to faded or obscured handwriting and make it visible to the naked eye.

A hyperspectral image of Alexander Hamilton's handwriting
Hyperspectral imaging of Hamilton's handwriting, from being obscured (top) to isolated and revealed (bottom).
Library of Congress

The text revealed a more emotional and romantic side to Hamilton, who had used the lines to woo Elizabeth. Technicians uncovered most of what he had written, with words in brackets still obscured and inferred:

Do you know my sensations when I see the
sweet characters from your hand? Yes you do,
by comparing [them] with your [own]
for my Betsey [loves] me and is [acquainted]
with all the joys of fondness. [Would] you
[exchange] them my dear for any other worthy
blessings? Is there any thing you would put
in competition[,] with one glowing [kiss] of
[unreadable], anticipate the delights we [unreadable]
in the unrestrained intercourses of wedded love,
and bet your heart joins mine in [fervent]
[wishes] to heaven that [all obstacles] and [interruptions]
May [be] speedily [removed].

Hamilton and Elizabeth Schuyler married on December 14, 1780. So why did Hamilton try and hide such romantic words during or after their courtship? He probably didn’t. Historians believe that his son, John Church Hamilton, crossed them out before publishing the letter as a part of a book of his father’s correspondence. He may have considered the passage a little too sexy for mass consumption.

[h/t Library of Congress]

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