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How does screen time affect kids’ brains? The first results of a landmark study are alarming.
The National Institutes of Health recently began a $300-million study to examine the effects of screen time on developing brains.
- The study uses MRI scans to track the changes in the brains of children who use screens at varying amounts.
- Early results revealed that kids who use screens for more than 7 hours per day show physical changes to the brain in the form of premature thinning of the cortex.
- It will likely be decades before scientists truly understand how smartphones and other technologies affect the brain.
How does screen time affect the developing brains of young kids?
That's the big question behind a $300-million study conducted by the National Institutes of Health that's using MRI scans to examine changes in brain structure among children who use smartphones and other screen devices. The first batch of results from the study, which was highlighted by CBS's 60 Minutes on Sunday, shows that kids who spent more than two hours per day on screens scored lower on language and thinking tests.
Alarmingly, kids who spent more than seven hours per day on electronic devices showed premature thinning of the cortex, which Dr. Gaya Dowling of the National Institutes of Health described as a "maturational process" that typically happens later in development.
"We don't know if it's being caused by the screen time," said Dowling. "We don't know yet if it's a bad thing. It won't be until we follow them over time that we will see if there are outcomes that are associated with the differences that we're seeing in this single snapshot."
It will take a few years to get answers to some of the questions raised by the study. However, the most interesting results will likely come decades from now, when researchers can see the long-term effects of technology use on the brain. Dr. Dimitri Christakis of Seattle Children's Hospital, the lead author of the American Academy of Pediatrics' most recent guidelines for screen time, told CBS he's concerned about this uncertainty.
"In many ways, the concern that investigators like I have is that we're sort of in the midst of a natural kind of uncontrolled experiment on the next generation of children," Christakis said.
Most kids say they spend too much time on smartphones
American teenagers now spend more than four and a half hours on their phones per day, and that's not even necessarily counting additional time spent playing video games, watching TV or using the computer. It's no surprise that a generation of kids who'd be hard pressed to remember a time without smartphones have made them a big part of daily life—the iPhone came out in 2007, after all, so kids born after 1995 entered adolescence with touchscreens in hand.
Many kids are themselves concerned. A recent survey from the Pew Research Center found that 54 percent of U.S. teens said they spend too much time on their phones, and 60 percent of them consider spending too much time online to be a "major problem." The data seem to back that up, with today's teenagers reporting lower levels of drinking, sex and drug use, yet higher levels of depression and loneliness.
This year, Facebook, Apple and Instagram began offering tools to help users monitor and reduce their screen time, including features that let users set time limits and see how their screen time is allocated across different apps. Some of these features are designed to help parents restrict their children's screen time.
Of course, the best solution might be to wait to give your kid a phone until it's necessary. The American Academy of Pediatrics' recommends for "children younger than 18 months, avoid use of screen media other than video-chatting," and that parents "of children 18 to 24 months of age who want to introduce digital media should choose high-quality programming, and watch it with their children to help them understand what they're seeing."
An unprecedented technology
Tristan Harris, a former Google manager who's spoken publicly on how Silicon Valley is intentionally making smart devices as addictive as possible, told 60 Minutes that some parents are under the false impression that smartphone use is analogous to chatting on the phone in past decades.
"... there's a narrative that, oh, I guess they're just doing this like we used to gossip on the phone, but what this misses is that your telephone in the 1970s didn't have a thousand engineers on the other side of the telephone who were redesigning it to work with other telephones and then updating the way your telephone worked every day to be more and more persuasive."
Tristan Harris: Your brain is vulnerable to hacking
- Study: screen time isn’t hurting kids socially ›
- Study: screen time isn’t hurting kids socially - Big Think ›
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Construction of the $500 billion dollar tech city-state of the future is moving ahead.
- The futuristic megacity Neom is being built in Saudi Arabia.
- The city will be fully automated, leading in health, education and quality of life.
- It will feature an artificial moon, cloud seeding, robotic gladiators and flying taxis.
The Red Sea area where Neom will be built:
Saudi Arabia Plans Futuristic City, "Neom" (Full Promotional Video)<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="c646d528d230c1bf66c75422bc4ccf6f"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/N53DzL3_BHA?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span>
Coronavirus layoffs are a glimpse into our automated future. We need to build better education opportunities now so Americans can find work in the economy of tomorrow.
- Outplacement is an underperforming $5 billion dollar industry. A new non-profit coalition by SkillUp intends to disrupt it.
- More and more Americans will be laid off in years to come due to automation. Those people need to reorient their career paths and reskill in a way that protects their long-term livelihood.
- SkillUp brings together technology and service providers, education and training providers, hiring employers, worker outreach, and philanthropies to help people land in-demand jobs in high-growth industries.
Source: McKinsey Global Institute analysis [PDF]<p>Work in understanding the skills at the heart of the new digital economy is leading to novel assessments that allow individuals to prove mastery to faithfully represent their abilities—but also to give weight and stackability to the emerging ecosystem of micro-credentials that make education more seamless across time and education providers. And we are seeing the beginnings of a renewal in the liberal arts, focused on building human skills in affordable ways that are accessible to many more individuals and far more effective.</p><p>Amidst these dark times, there is much opportunity to refresh the nation's education and training solutions to support the success of individuals and society writ large.</p>
Do we really know what we want in a romantic partner? If so, do our desires actually mean we match up with people who suit them?
- Two separate scientific studies suggest that our "ideals" don't really match what we look for in a romantic partner.
- Results of studies like these can change the way we date, especially in the online world.
- "You say you want these three attributes and you like the people who possess these attributes. But the story doesn't end there," says Paul Eastwick, co-author of the study and professor in the UC Davis Department of Psychology.
Do we really know what we want in love or are we just guessing?<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="204859156383d358652fda6f7eadda0f"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/vQgfx2iYlso?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p>More than 700 participants selected their top three qualities in a romantic partner (things like funny, attractive, inquisitive, kind, etc). They then reported their romantic desire for a series of people they knew personally. Some were blind date partners, others were romantic partners and some were simply platonic friends.</p><p>While participants did experience more romantic desire to the extent that these personal connections of theirs (people they knew) had the qualities they listed, there was more to the study. </p><p>Paul Eastwick, co-author and professor in the UC Davis Department of Psychology <a href="https://medicalxpress.com/news/2020-07-romantic-partner-random-stranger.html" target="_blank">explains</a>: "You say you want these three attributes and you like the people who possess these attributes. But the story doesn't end there." </p><p>The participants also considered the extent to which their personal acquaintances possessed three attributes nominated by some other random person in the study. For example, if Kris listed "down-to-earth", intelligent and thoughtful as her own top three attributes, Vanessa also experienced more desire for people with those specific traits. </p>
Does what we want really match up with what we find?<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQ0NDA4Ni9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTU5NjM3NzY5OX0.gdUo-UbjYhKUDOL39BDZseRynbwaK2H5dfJtbV0nw8Y/img.jpg?width=980" id="ff376" class="rm-shortcode" data-rm-shortcode-id="7c1e3a1bb9d576872ef5dce39b2e8e80" data-rm-shortcode-name="rebelmouse-image" alt="illustration of a man and woman matching on a dating app" />
What we claim to want and what we look for may be two separate things...
Image by GoodStudio on Shutterstock<p>So the question became: are we really listing what we want in an ideal partner or are we just listing vague qualities that people typically consider as positive?</p><p>"So in the end, we want partners who have positive qualities," Sparks explained, "but the qualities you specifically list do not actually have special predictive power for you." </p><p>In other words, the idea that we find certain things attractive in a person does not mean we actively seek out people who have those qualities, despite saying it's what we want in a love interest. The authors of this study suggest these findings could have implications for the way we approach online dating in the digital age. </p><p>This isn't the first study of its kind to suggest that what we find in love isn't really what we were looking for. The evidence suggests that we really are consistent in the abstract of it all: when asked to evaluate what you want on paper, you are more likely to suggest overall attractiveness in accordance with what you've stated are important ideals to you. But real life isn't so similar. </p><p>According to <a href="https://www.psychologytoday.com/us/blog/meet-catch-and-keep/201506/when-it-comes-love-do-you-really-know-what-you-want" target="_blank">Psychology Today,</a> who covered a 2015 study with similar results, initial face-to-face encounters have very little effect on our romantic desire. "When we initially meet someone, our level of romantic interest in the person is independent of our standards."</p><p>While you might have no immediate interest in John, he may fit your criteria of being kind, loyal, and intelligent. Similarly, someone may be attracted to Elaine even though she doesn't have any of the qualities they originally said were important to them. </p><p><strong>What does this all mean? </strong></p><p>The authors of both the 2015 and 2020 studies say the same thing: give someone a chance before writing them off as a poor match. If your initial attraction is independent of the standards you've set out, the qualities which you've listed as important to you, the first time you meet someone may not give you enough information to make an informed decision.</p><p>"It's really easy to spend time hunting around online for someone who seems to match your ideals," said Sparks, "But our research suggests an alternative approach: Don't be too picky ahead of time about whether a partner matches your ideals on paper. Or, even better, let your friends pick your dates for you." </p>