Lifestyle

Time to say goodbye to the B.M.I.?

September 6, 2024

Move over, body mass index (BMI). Make room for roundness—to be precise, the body roundness index (BRI), reports The New York Times.

The body mass index is a ratio of height to weight that has long been used as a medical screening tool. It is one of the most widely used health metrics—but also one of the most reviled, because it is used to label people overweight, obese or extremely obese.

The classifications have been questioned by athletes like the American Olympic rugby player Ilona Maher, whose BMI of 30 technically puts her on the cusp of obesity. “But alas,” she said on Instagram, addressing online trolls who tried to shame her about her weight, “I’m going to the Olympics and you’re not.”

Advocates for overweight individuals and people of color note that the formula was developed nearly 200 years ago and based exclusively on data from men—most of them white—and that it was never intended for medical screening.

Even physicians have weighed in on the shortcomings of BMI. The American Medical Association warned last year that BMI is an imperfect metric that doesn’t account for racial, ethnic, age, sex and gender diversity. It can’t differentiate between individuals who carry a lot of muscle and those with fat in all the wrong places.

“Based on BMI, Arnold Schwarzenegger when he was a bodybuilder would have been categorized as obese and needing to lose weight,” said Dr. Wajahat Mehal, director of the Metabolic Health and Weight Loss Program at Yale University.

“But as soon as you measured his waist, you’d see, ‘Oh, it’s 32 inches.’”

So welcome a new metric: the body roundness index. BRI is just what it sounds like—a measure of how round or circlelike you are;  using a formula that takes into account height and waist, but not weight.

It’s a formula that may provide a better estimate of central obesity and abdominal fat, which are closely linked to an increased risk of developing Type 2 diabetes, hypertension, and heart disease, unlike fat stored on the buttocks and thighs.

A paper published in JAMA Network Open in June was the latest in a string of studies to report that BRI is a promising predictor of mortality. B.R.I. scores generally run from 1 to 15; most people rank between 1 and 10. Among a nationally representative sample of 33,000 Americans, BRI. scores rose between 1999 and 2018, the new study found.

Those with BRI scores of 6.9 and up—indicating the roundest bodies—were at the highest risk of dying from cancer, heart disease, and other illnesses.

Their overall mortality risk was almost 50% greater than those with BRIs of 4.5 to 5.5, which were in the midrange of the sample; while those with B.R.I. scores of 5.46 to 6.9 faced a risk that was 25% higher than those in the midrange.

But those who were least round were also at elevated risk of death: People with BRI scores under 3.41 also faced a mortality risk that was 25% higher than those in the midrange, the study found.

The paper’s authors suggested the lower scores—seen mostly in those 65 and older—might have reflected malnutrition, muscle atrophy, or inactivity.

“BMI cannot distinguish body fat from muscle mass,” Wenquan Niu, who works at the Center for Evidence-Based Medicine at the Capital Institute of Pediatrics in Beijing and was a senior author of the paper, wrote in an email. “For any given BMI, fat distribution, and body composition can vary dramatically.”

Indeed, Dr. Niu wrote, “When BMI is used to frame risk, it often overestimates risk for muscular athletes, whereas it underestimates risk for older persons with muscle mass that’s been replaced by fat.”

Research contact: @nytimes

NYU professor of medicine says death appears to be reversible

September 4, 2024

A near-death experience expert insists that one’s heart stopping doesn’t have to be the end, with current medical interventions that can help patients cheat death, reports Futurism.

In an interview with The Telegraph, Associate Professor of Medicine Sam Parnia at New York University’s Langone Medical Center insisted that by and large, the medical industry is still very behind on the concepts of death and dying.

According to Parnia, studies from the last five years— including some undertaken by his own eponymous lab at NYUhave suggested that our brains remain “salvageable for not only hours, but possibly days” after death.

In one such Parnia Lab study from last year, for instance, researchers found that some cardiac arrest patients had memories of their death experiences up to an hour after their hearts had stopped, and brain activity from those same patients suggests a similar phenomenon. For 40% of those subjects, brain activity also returned to normal or near-normal an hour into cardiopulmonary resuscitation (CPR).

Combined with other studies—including a particularly gruesome one out of Yale that involved decapitated pig brains being revived up to 14 hours after their beheadings—the seemingly death-defying doctor said that the idea that death is a definitive state is “simply a social convention that does not conform with scientific realities.”

“If we remove that social label that makes us think everything stops, and look at it objectively, [death is] basically an injury process,” Parnia told The Telegraph.

By his reasoning, that process can be reversed not only by using extracorporeal membrane oxygenation (ECMO) machines, which act as a body’s heart and lungs when those functions have failed, but also specific cocktails of drugs that have been demonstrated to aid in the process of resurrection in animal studies.

Parnia told the British newspaper that he believes his team is the only one in the world giving patients these so-called “CPR cocktails“—which can include epinephrine, the diabetes drug metformin, vitamin C, the antidiuretic drug vasopressin, and the fatigue supplement Sulbutiamine—to cardiac arrest patients in efforts to revive them.

The 52-year-old doctor is so confident in his approach that he’s taken to telling people that, given his age and gender, he’s likely “going to have a cardiac arrest soon,” and that he shouldn’t have to die then when interventions like ECMO and CPR cocktails are at his disposal.

“If I have a heart attack and die tomorrow, why should I stay dead?” the death defier asked the newspaper. “That’s not necessary anymore.”

Obviously, Parnia’s idea of post-death revival is extremely dependent upon timing—but if he has his way, we might start seeing beyond death less as a final frontier, and more as something reversible in its immediate aftermath or even beyond.

Research contact: @futurism

The airport tray trend stirring outrage and delight

September 3, 2024

They might be grey, plastic, and reportedly, very dirty, but airport security trays are in demand. Online, a new trend called the “airport tray aesthetic” sees people carefully curating the contents of a tray—showcasing their shoes, scents, accessories, headphones, hats, and reading material against a backdrop of polypropylene—and then photographing them to share with their followers, reports The Guardian.

Sometimes called referencing the U.S. Transportation Security Administration, some of the compositions are understated and minimalist, featuring neatly placed flasks and hair clips. Others are more chaotic.

They have been met with a variety of reactions. Some people seem to read them as a waste of time; others, as a means to humblebrag about fancy perfumes and highbrow books. But for others, they are simply an expression of personal style and creativity.

“In my art director era,” Piper Taich captioned one of her videos featuring multiple compositions: one including Adidas trainers, an Olympus camera and tan bag; another with pink mules, a lime green bag and a Canon camera. A professional graphic designer, Taich sees the purpose as “expressing yourself and having fun.”.

“Part of my job is directing photoshoots, so putting together an eye-catching, cohesive composition like in the trend is something I really enjoy.” For work, she does it with food; for fun, she does it with accessories.

Brands, including those in the sustainable fashion and skincare business, are hopping onboard. The publisher Faber posted half a dozen trays themed around its books on Instagram; while the bag, brand August Noa, used it to showcase their designs surrounded by Chanel mules, claw clips, and sunglasses.

According to J’Nae Phillips, a senior trend analyst, fashion columnist and creator of the Fashion Tingz newsletter, it is “the latest form of digital flexing”.

While the cliche on Instagram is photographs of food, this could be read as a 2024 update. “This phenomenon is an evolution of #foodstagram and aesthetically pleasing foodie pics posted online, where curated food displays signaled a certain lifestyle and sense of taste,” said Phillips. “Security tray photos go one step further than this, blending the thrill of travel with conspicuous consumption, allowing people to construct and broadcast their aspirational identities in a way that feels current and fresh.”

It isn’t the first time people on social media have come up with seemingly unlikely backdrops against which to photograph what they are wearing or reading. Plates, shelves, and bedside tables have all been visual vessels through which to offer such snapshots. In fact, as part of another current trend, people share pictures of what they are carrying—Prada handbags, flowers and nice bottles of—in their bike baskets, often offering some handy marketing for bike-share schemes such as Lime in the process.

Not everyone is onboard with the airport tray aesthetic, however. Long queues are one of several annoying facts of air travel, and much of this content has a few disgruntled comments complaining about the perceived hold-up caused. But content creators have hit back, saying they go to great lengths to avoid inconveniencing others.

The digital creator and secondhand clothes lover Chelsea Henriquez, who goes by the name Chelsea As of Late on TikTok, has a tutorial outlining how she goes through security and then takes the tray to the side to, as she puts it in the video, “set up your little tray to your heart’s desire.”

The video Taich shared of how she creates hers at home, with a tray bought on Amazon, has been viewed more than 1.5m times. She even makes herself a fake boarding pass on Photoshop to make the scene feel more real.

Taich understands people’s “initial outrage when they think these photos are being taken in line”. But, she said: “I’m not sure it would even be possible in the speed and chaos of the TSA line, so like me, other creators are mimicking the trend at home, or doing it once exiting the line.” In any case, she said, she immediately recognized the trend as “concept photography”. “Who is flying with just loose jewelery, lip gloss, and heels?”

Henriquez has this sage advice to offer: “If you’re mad about people taking a tray from the TSA line, going to a separate section and setting up a cute little aesthetic photo where they are not bothering anybody … then, I dunno, grab a Snickers. You might be hungry.”

Research contact: @guardian

Marmoset monkeys give each other ‘nicknames,’ just like humans

Sepember 2, 2024

Marmoset monkeys have a surprising method of naming each other—and scientists say they’ve found the first evidence of such behavior, reports The Sun.

Marmosets are native to South America, with a range that extends outside Brazil. The species includes some of the smallest primates in the world.

They are known for having complex speech patterns that help them to communicate in tight-knit family groups. What’s more, a study published in the journal, Science, reveals that marmosets use specific sounds, dubbed “phee-calls,” to name each other.

Scientists say this behavior was previously known only to exist in humans, dolphins, and elephants. The naming of others is a “highly advanced cognitive ability” only observed in social animals.

But our closest evolutionary relatives— nonhuman primates like the chimpanzee and bonobo —weren’t thought to be able to do so.

A team of researchers from the David Omer Lab at Hebrew University made the groundbreaking discovery after closely observing marmoset behavior. The team recorded conversations between monkey pairs, as well as interactions between the tiny creatures and a computer system. The marmosets were revealed to use their “phee-calls” to address specific individuals.

Furthermore, the monkeys could tell when a call was directed at them and were able to respond “more accurately.”

“This discovery highlights the complexity of social communication among marmosets,” Omer said. “These calls are not just used for self-localization, as previously though. Marmosets use these specific calls to label and address specific individuals.”

By studying parent-offspring pairs, the researchers found that relatives use similar vocal labels to address different individuals and even use similar noises to represent names.

This behavior is even present among adult marmosets who aren’t blood relatives, indicating t that hey learn vocal labels from other members of their family group.

“Marmosets live in small monogamous family groups and take care of their young together, much like humans do,” Omer explained. “These similarities suggest that they faced comparable evolutionary social challenges to our early pre-linguistic ancestors, which might have led them to develop similar communicating methods.”

Further research may elucidate how the human ability to communicate evolved.

Research contact: @TheSun

Stand your ground: Never run from a charging bear

August 30, 2024

When confronted with danger, we often face a choice between fight or flight. For many, the instinctive reaction to a charging bear is to run. However, this response can be more dangerous than you might think. A wildlife tour company called Scenic Bear Viewing in Homer, Alaska, recently shared a video revealing that it’s better to stand your ground when faced with a charging bear, reports My Modern Met.

The short video shows a native grizzly bear charging quickly towards a group of photographers, who instinctively start warding off the animal with loud noises. One of the professional bear guides, known as Martin, took a bold step by pretending to chase the bear, which effectively caused it to retreat.

“Never run from a charging bear, even though your instinct is to run,” says the caption of the video. “This is a bluff charge. They are just trying to get you to run.” Bears have a natural instinct to chase, so running away can actually trigger their pursuit.

It’s just as important to avoid getting too close to the natural-born predators. “Don’t get close to bears in the wild. Make sure you have an experienced guide with you,” says Scenic Bear Viewing. “We do not get closer than 50 yards. This is not the first time we’ve been bluff charged. We are trained exactly for this situation.”

The Scenic Bear Viewing team explains that these bears have been accustomed to human visitors for over 30 years, making them a familiar part of their daily lives. They say, “These bears are not fed or hunted by humans. No harm is being done to these bears and we want to keep it that way. We take photos of the bears and leave no trace.”

For more bear videos, you can follow Scenic Bear Viewing on Instagram.

Research contact: @mymodernmet

Not very ‘demure’: TikTok creator faces a legal battle over her own catchphrase

Auugust 29, 2024

The creator behind TikTok’s “demure” catchphrase creator has become more mindful of U.S. trademark law, reports The Guardian.

Jools Lebron, an influencer with over 2 million followers on the app, became an overnight sensation after advising on how to be “demure,” “mindful,” and “cutesy” at work and in life.

The trend picked up steam, with brands like Verizon and Netflix working with Lebron on sponsored content; and celebrities such as Jennifer Lopez, Olivia Rodrigo, and Gillian Anderson using the phrase in their own videos.

Last week, Lebron, who is trans, announced that the buzz around her videos had changed her life, and said she can now finance her transition due to her Internet fame.

But it’s not all good news: Lebron posted (and then deleted) a teary-eyed TikTok revealing that she “didn’t trademark fast enough.” According to TMZ, a man in Washington State named Jefferson Bates filed to trademark “Very Demure .. Very Mindful …” in an apparent attempt to cash in on Lebron’s success.

“I wanted to do so much for my family and provide for my transition, and I just feel like I dropped the ball,” Lebron said in the video. (Neither Lebron nor Bates responded to a request to comment.)

Raluca Pop, who founded the social media platform Hive Social as an alternative to Elon Musk’s X, also came forward saying she filed an application for “Very Demure Very Cutesy” in California, as a means of solidarity with Lebron.

“Once I saw that this other guy tried to steal it out from under her, I realized that he didn’t trademark the remainder of her phrase, ‘very cutesy’,” Pop told NBC News.

“And that’s why I went and did it, instead.” Pop added that she planned to transfer the trademark to Lebron because “she should be the one to reap the benefits”.

If Bates’ application is approved, Lebron will not be able use her catchphrase on official merchandise or in sponsored content in Washington. That is, unless she gets a federal trademark. And trademark lawyers are confident Lebron can both fight Bates’ claim to “Very Demure .. Very Mindful …” and secure her own rights.

“If I were her, I wouldn’t be worried,” said Alli Elmunzer, a trademark attorney and founder of Influencer Legal, a law firm that helps content creators navigate trademark and contract issues. “It’s very clear that she was the first to use it – she should start monetizing it, because that only gives strength to her case of being the first.”

According to Elmunzer, Bates filed a $1billion trademark application, which declares an intent to use a trademark. “He’s saying he’s planning to use it, but hasn’t yet,” Elmunzer said. “This gives [Lebron] a leg up, because when she opposes, she can say he’s not using it and she is, and she has all this proof.”

Along with that, U.S. trademark law recognizes the first person to use a trademark, not the first person to file it. “I have no doubt that Lebron will be able to successfully oppose this, and there’s a pathway for her to get the trademark, but it will cost her time and money to get it.”

Kyona McGhee, an attorney and founder of Trademark My Stuff law firm, said that if she were Lebron’s attorney, she would immediately send a cease and desist letter to Bates, demanding that he withdraw his application and claiming all rights to the phrase, plus name the ways Lebron plans to monetize the trademark.

“She has to file with the U.S. Patent and Trademark Office for a federal trademark, because it will have authority across the country,” McGhee added. “Once Lebron has federal registration, she won’t need anything on a state level from anyone or anything.”

Bates does not seem to have a connection to Lebron, who lives in Chicago, or to he catchphrase. Both attorneys say that, if the cease and desist order doesn’t deter him, then the two parties could be in for a tedious legal battle. In the meantime, Lebron should monetize the catchphrase however she wants.

“I don’t think that her not having a trademark yet means that brands will shy away from wanting to strike while the iron is hot and use her phrase,” McGhee said.

Lebron is making the most of her newfound fame, posting “demure”-sponsored content with the haircare brand K18, teasing a potential collaboration with Netflix, and appearing on the Jimmy Kimmel show with RuPaul as guest host.

Research contact: @guardian

Study shows what your favorite film genres reveal about your brain

August 28, 2024

Crime films, action films, comedies, or documentaries? A person’s favorite film genre reveals a lot about how their brain works. This is the finding of a new study led by the Martin Luther Universität Halle-Wittenberg (MLU) in Germany that compared data on film preferences with recordings of the brain activity of around 260 people reports EurekAlert.

Fans of action films and comedies reacted very strongly to negative emotional stimuli, while participants who favored documentaries or crime films and thrillers had a significantly weaker reaction. The results were published in the journal. Frontiers in Behavioral Neuroscience.

Films are an interesting phenomenon for psychologists. “Films are so fascinating because they not only depict every human emotion, but they also evoke them. Negative emotions, such as anger or fear, play a central role in many films,” says Esther Zwiky, a psychologist at MLU. Up until recently, relatively little was known about the connection between film preferences and the processing of negative emotions in the brain.

The researchers investigated this interplay in detail by analyzing data from 257 people. As part of a larger study, the respondents also provided information about their film preferences.

In addition, the participants’ brain activity was analyzed using functional magnetic resonance imaging (fMRI). Subjects were shown fearful or angry faces and geometric shapes while lying in an MRI machine. “With this established test, we can measure how the brain processes emotional stimuli,” explains Zwiky. 

The researchers focused on two areas of the brain. First, the amygdala, which is responsible for processing vital emotions. “The amygdala can trigger a fight-or-flight reaction in response to threats,” says Zwiky. The team also investigated the neuronal activity of the nucleus accumbens, known as the reward center in the brain.

The results were surprising: “We found that fans of action films showed the strongest reactions in both areas. We hadn’t expected this, as action films typically provide many stimuli. Thus, it would have made more sense if action fans had been less easy to stimulate,” Zwiky continues.

However, the results suggest that action film aficionados are particularly susceptible to emotional stimuli and find this stimulation appealing. The team found similar brain activity in the brains of people who preferred comedies.

A different picture emerged, however, for fans of crime films or thrillers and documentaries. Here, both areas of the brain reacted significantly less to the emotional stimuli than in the other groups of participants. “It appears that people choose the film genres that most optimally stimulate their brains,” concludes Zwiky.

Research contact: @EurekAlert

Be kind, rewind: Is backward walking any better than walking forward?

August 27, 2024

Australian writer Bianca Nogrady, whose articles appear in The Guardian, calls it “the hill of death”—a steep uphill section of dirt road toward the end of an otherwise pleasant and not-too-taxing walk in the scenic Blue Mountains.

She explains, “It’s challenging enough to get up it walking forward, but my friend and I both felt pretty cocky about our fitness this morning, so I suggested we try walking up it backward.”

Soon, she says, her quad and calf muscles were burning, her heart was pounding, and she was regretting the idea. But the two walkers persisted—and with much huffing and whinging they walked backwards up a 32-yard-long section.

Backward walking is so hot right now, both literally and figuratively. The practice has apparently been common in China for some time; but as so often happens when something is “discovered” by an influencer—in this case, online fitness coach Ben Patrick, AKA the KneesOverToesGuy—it has suddenly become very popular with parts of the Western world.

“You start to see people walking backwards on treadmills in a gym, and … when you see people who look like they’re switched on doing it with intent, I think that also fueled the fire,” says exercise physiologist Jack McNamara from the University of East London.

What do the experts say?

There have been a lot of headlines about the benefits of backward walking, but relatively few well-done clinical studies of the practice. The evidence that does exist suggests backward walking could help some people and in particular settings. But it’s unlikely we’re going to see popular walking spots looking as though someone hit the rewind button on the remote.

The first group who may yield benefits are those at risk of falls, such as older people or those recovering from conditions such as stroke. Dr. Christian Barton, associate professor of Physiotherapy at Melbourne’s La Trobe University, says backwards walking challenges the muscles and body in ways we don’t normally experience.

“That can help you to build what we call proprioception, which is essentially how your muscles and your joints communicate with your brain, and how your brain communicates back to them to make sure you don’t fall over,” says Barton.

Falls claim the lives of 14 Australians over the age of 65 every day. Yet falls can be prevented with relatively simple strategies, which can include backwards walking, says Kim Delbaere, a senior research scientist and expert in falls prevention at Neuroscience Research Australia.

“Walking backward is not something that we do very often, and so from that point of view, yes, it absolutely does engage different systems and different muscle groups,” Delbaere says. “But it’s not a muscle training exercise; it’s not a strength exercise. It’s more about coordination.”

How can you incorporate backwards walking in your exercise?

Delbaere suggests the safest way for people with balance issues to try backwards walking is at home, next to something such as a kitchen bench for support. She recommends first walking carefully forwards, graduating to walking by touching heel to toe—always with one hand on or near the bench – then doing the same thing but backwards.

The good thing about backward walking for falls prevention is that even short bursts can make a difference. “You can absolutely break it up into five minutes here, 20 minutes there,” she says, with the goal to reach of two to three hours of falls-prevention exercises each week.

People with knee problems such as osteoarthritis may also gain specific benefits from walking backwards, research suggests. “The burn that you found in your quads is strengthening muscles that are proportionally not as strong, and that’s a good thing for strengthening and stabilizing the knee,” McNamara says. “It also can help prevent the injuries: the stronger your knee is, the more robust it is, the less chance you have of injury.”

Backward walking also places less strain on the knee than does forward walking, Barton says, because the knee isn’t transferring forward over the toes as much, so there’s less compressive force on it. “You still have to have some knee bend, it’s just you sit back more into your hips, then you move into your knee, so it challenges the strength of your hips a little bit more and your thigh muscles a little bit more.”

Is it better than walking forward?

Online claims of backward walking’s superiority for cardiovascular health and weight loss may be putting the cart before the horse. While McNamara says it is true that walking and running backward burns slightly more calories than going the same distance facing forwards, “you’re not going to run a marathon going backward, so it’s a moot point.”

But safely incorporated as part of regular exercise—for example, walking backward for short stretches on an obstruction-free flat surface such as an oval or up a hill where there are no trip hazards—backward walking is a way to spice up an exercise routine, McNamara says.

“It’s the psychological break or the novelty, but it’s not necessarily wasting your time if you do it with purpose and you do it with structure.”

Research contact: @guardian

Ahead of October launch, Jeff Bezos’ Blue Origin rocket explodes during testing

August 26, 2024

Jeff Bezos’ rocket venture Blue Origin is tripping over its own feet as it races to meet an October deadline, reports Futurism.

The company is still hoping to have its New Glenn orbital rocket ready for NASA’s EscaPADE mission, which is scheduled to launch later this year—taking advantage of a rare alignment of the Earth and Mars to launch two spacecraft toward the Red Planet.

The next time the two planets will be this close won’t occur for another two years.

But as  Bloomberg reports, Blue Origin is facing major setbacks in the development of the 321-foot rocket. According to the report, an upper rocket portion failed during stress testing and exploded during testing, and a separate portion imploded like a soda can after engineers failed to install the necessary pressure-release valves before moving it from a humid exterior hangar into an air-conditioned space.

The launch platform, designed to compete with SpaceX’s Falcon 9 and launch Amazon’s Project Kuiper satellite constellation, is already a whopping four years behind schedule.

And given the latest news, it’s starting to look increasingly unlikely that New Glenn will be ready to boost NASA’s two Mars spacecraft into Earth’s orbit in a matter of just two months.

Failure to launch

That’s despite all the flight hardware being complete, as a Blue Origin spokesperson told Bloomberg. The company is now working on assembling the various parts and engine integrations.

The company already has experienced other major setbacks, including an engine explosion of its much smaller New Shepard rocket in September 2022, which grounded the space tourist shuttle until December 2023.

Blue Origin has also reshuffled much of its upper management in the midst of the drama, including the appointment of a new CEO in December, Dave Limp, who has since installed several new executives in an apparent attempt to kick the company into high gear. The company is still hiring at a breakneck pace.

But even with a slate of new talent, it’s still facing some major technical hurdles—including the much-plagued BE-4 rocket engines that will power its New Glenn rocket. The engines—which also are being used for the United Launch Alliance’s Vulcan rockethave faced years of delays and were only recently delivered.

With easily avoidable user errors plaguing its rocket’s development, Blue Origin is facing a major uphill battle to rise to the occasion—and a lucrative NASA contract hangs in the balance.

Rocket Lab, the maker of the two Mars spacecraft, recently revealed that it had entered “hero mode” to get the probes ready for an October launch. But whether those efforts will pay off remains to be seen.

Research contact: @futurism

Redshirting: Should your child delay kindergarten/school entry?

August 19, 2024

“Redshirting”—or choosing to delay school entry for a year—seems to be an increasingly popular trend among parents who are trying to give their children a competitive advantage, reports Yahoo Lifestyle.

The growing popularity of redshirting may have been started by Malcolm Gladwell’s bestselling book, Outliers, which was published in 2008. In this book, Gladwell claims that a child being relatively older than their peers provides an advantage.

Gladwell points to data showing that nearly all players for the Canadian Hockey League have birthdays in the first four months of the year. Because the cutoff for most sports in Canada is January 1, children born in the first four months of the year are older than the other children on the team—thus, making them more likely to be identified as talented and ultimately more likely to play professional hockey. Gladwell argues that this principle extends to children who are older than their classmates having an academic advantage as well.

Sincethis book was published, it seems that children are waiting longer and longer to start kindergarten every year. At the same time, kindergarten seems to be becoming increasingly academic and rigorous.

For parents of children born near the cutoff date, the pressure to delay kindergarten feels intense. So does research actually find that redshirting will provide an academic and/or social advantage for children? The answer may be more complicated than you think.

 The research on redshirting

Research on redshirting suggests that it is associated with a small academic advantage (that is, higher academic test scores) and test scores that seem to increase at a greater rate in the first and second grades (suggesting that redshirted children are showing enhanced learning in these grades).

However, this effect may begin to fade as early as the end of first grade. This research is also correlational—meaning we do not know whether it is redshirting that causes these advantages or if redshirting is simply associated with advantages. The latter would not be surprising since parents that choose to redshirt their children are often very different from the parents who do not—most notably, they are often higher income families.

Some research studies eliminate the problem of parent choice by looking at the impact of children’s age within the same grade (such as comparing students with summer birthdays to students in the same grade with fall birthdays). Research finds that students who are relatively older than other children in their grade score higher on math and science tests and, although these differences decrease over the years, they are still present to some extent in eighth grade.

Other research finds that children who are relatively older show less hyperactivity and inattention and greater educational attainment (translation: getting farther in school). However, the impact on educational attainment is greatly reduced when schools do not engage in early tracking (translation: sending children to different schools based on academic abilities in elementary school).

Research also shows that children who are older relative to their classmates are more likely to be in gifted education and less likely to be in special education. These positive impacts seem to extend to high school and beyond.

Children who are older relative to their classmates are also less likely to drop out of high school, less likely to commit a felony, and less likely to experience a teenage pregnancy. Children who are older than their classmates also are more likely to attend a four-year college than younger students.

Yet, it is very important to note that this line of research only involves associations (meaning, we do not know whether being older relative to your peers actually causes any of these positive or negative outcomes). Further research is needed in order to conclude that redshirting actually causes any of these positive outcomes.

 Are there any situations in which parents may want to avoid redshirting?

So, research suggests that being older than your peers is consistently associated with at least a small advantage—but are there any situations in which parents might want to avoid redshirting?

Research suggests that when your child has an identified disability, a suspected disability—or even if you are just concerned that they may need some extra help in school—you may want to avoid redshirting. In this case, delaying school entry may be associated with worse academic performance, because it would also involve delaying free essential services through the public school system (such as speech therapy and learning support).

This short delay may have a big impact as research finds that services before age five are more effective in improving a child’s long-term outcome than services after age five.

Research has compared the impact of redshirting on children with disabilities (such as autism, developmental delays, learning disabilities, or health impairments) versus children without disabilities. Researchers found that children with disabilities who were redshirted scored significantly lower in math in third grade when compared to children with disabilities who were not redshirted, while children without disabilities who were redshirted showed improved math and reading scores in third grade. Research also finds a negative impact of redshirting for children with more severe ADHD and no impact for children with learning disabilities.

 Is redshirting more important for boys than girls?

In any discussion of redshirting, it is commonly assumed that boys in particular benefit from redshirting. In line with this assumption, research reveals that boys are indeed more likely to be redshirted than girls. So is there any research to back up this trend?

Research does find that girls are more likely to be ready for kindergarten than boys and that this difference is mostly driven by differences in social-emotional development.

Research also suggests that boys seem to show greater gains from redshirting and that boys may not cope as well as girls with having higher-achieving classmates.

 Research contact: @yahoolifestyle0