TIME Mental Health/Psychology

Less Than 5 Hours of Sleep Leads to False Memories

Skimping on sleep wears down your body in so many ways: it worsens cognitive function, slows reaction time, and makes learning more difficult. (The list goes on and on: after reading our new feature about the power of sleep, you might just scare yourself sleepy.)

That’s quite enough consequences without piling on the results of a recent study in Psychological Science, which found that sleep deprivation is linked to false memories. Among the 193 people tested, those who got 5 or fewer hours of sleep for just one night were significantly more likely to say they’d seen a news video when they actually hadn’t.

There’s more than just fantastical daydreaming at stake. False memories in the form of eyewitness misidentifications are thought to be the number-one cause of wrongful convictions in the U.S., the study authors write, so sleep deprivation could have consequences beyond the scope of your own health.

The study also discovered that students were more prone to researchers’ false suggestions when they hadn’t slept more than five hours. They wove those suggestions into their responses 38% of the time, while the group that got plenty of sleep did so 28% of the time. That’s probably because sleep deprivation leads to problems encoding new information, the authors write.

“Our results also suggest that total sleep deprivation may not be necessary to increase false memory,” they write in the study. Losing just a few hours could be enough to lead you to dream up facts during waking life.

TIME Mental Health/Psychology

The Link Between Sunny Days and Suicide

Sunshine's complex effect on suicide and depression

Sunshine seems to be linked to suicide—but not in the way you might think.

A new study published today in JAMA Psychiatry compared 69,462 suicides that occurred in Austria between 1970 and 2010 to hours of sunshine during that day. The researchers found a positive association between the number of suicides on a particular day and the hours of sunshine—meaning sunny days saw more suicides, shedding light on some popular misconceptions about what leads up to or contributed to someone taking his or her own life. (Take the myth of “holiday suicides”—the idea that more people commit suicide during the hectic holiday season. It’s not founded in stats, data shows. December actually has the lowest suicide rates of the year, according to the CDC’s National Center for Health Statistics. They’re highest in the spring.)

Reasons for suicide are, of course, multifaceted, making it impossible to isolate a single risk factor, including how light affects brain chemistry. Still, researchers have some ideas.

When a depressed person first begins light therapy, for instance, their drive and motivation often improve before their mood does, says Dr. Matthäus Willeit of the Medical University Vienna, and one of the study authors. “If you have enhanced energy and motivation and drive but your mood is still very depressed, that might favor a state where you are at greater risk for suicide.” That’s similar to what can happen when someone first starts treatment with antidepressants, he says.

Another factor to consider is that exposure to light has profound effects on serotonin transmission in the brain, which influences things like mood and impulsiveness, the authors write in their paper. More light means lower serotonin-transporter binding in the brain, a decrease that encourages impulsiveness, Willeit explains. While most people have had suicidal thoughts at some point, very few act on them, and Willeit thinks impulse control is a key player in going through with it.

On the other hand, some studies show that bright light therapy is an effective treatment against depression with few side effects. And today’s JAMA Psychiatry study showed that light seems to have a protective effect against suicide in the long-term.

“It’s too early to say,” Willeit says of the relationship of sunshine to suicide. “We’re just beginning to understand what light does.”

TIME Mental Health/Psychology

6 Things You Must Know About Money and Happiness

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If you were offered a well-deserved raise at work or a no-strings-attached wad of money, would you take it? You’ve surely heard that money can’t buy happiness, but it can certainly get you closer to an enjoyable life, right?

Yes and no, says Elizabeth Dunn, Ph.D., associate professor of psychology at the University of British Columbia and author of Happy Money: The Science of Smarter Spending. “It turns out, what you do with your money seems to matter just as much to your happiness as how much you make,” she says—good news for those of us without a sudden windfall or promotion in our near futures.

Health.com: 15 Myths and Facts About Depression

Here are six facts that may surprise you—and tips on how to live the good life, no matter how much you’ve got.

Don’t sweat the six-figure job

“There is definitely a correlation between income and happiness,” says Dunn. “But actually, money buys less happiness than people assume.” And in some ways, it buys happiness only up to a certain point: A 2010 Princeton University study found that emotional well-being—defined by the frequency of emotions like joy, anger, affection, and sadness—tended to rise with salary, but only up to about $75,000. Beyond that, people continued to rate their lives as more satisfying, but they didn’t seem to experience any more happiness on a day-to-day basis.

Spend on experiences, not things

Material goods may last longer, but a 2014 San Francisco State University study shows that life experiences—like trips, fancy dinners, and spa treatments—provide more satisfaction in the long run. Researchers interviewed volunteers before and after they made purchases of both types, and found that afterward, most people viewed the intangibles as a better use of money. However, they add, an experience has to fit a person’s personality in order to have benefit; someone who doesn’t like show tunes, for example, probably won’t see the value in a Broadway play.

Health.com: 20 Ways to Get Healthier for Free

Donate to charity

Giving to people or organizations in need “has a direct correlational effect on happiness that is basically equivalent to a doubling of household income,” says Dunn, citing research from a Gallup World Poll. How you give matters, too, she says: You’ll get more of an emotional reward by supporting groups you feel closely connected to, or when a close friend asks for your help. (In other words, accept that Ice Bucket Challenge already—the giving money part, at least!)

Pay it off early

“The pleasure of consumption can be dragged down by the pain of having to pay for it,” says Dunn. One way to get around that? Put money down for things as early as you can, even if you won’t actually experience them for a while—book trips months in advance, pre-order books and albums you’re excited about, or purchase credit for a service you can redeem at a later date. “Research shows that what lies in the future is much more emotionally evocative than what lies in the past,” she adds. “If we paid for something last year, it’s almost like our brain forgets we ever spent money on it.”

Health.com: Money Trouble? 14 Depression-Fighting Tips

Give thoughtful gifts

When money gets tight, it may seem wasteful to splurge on presents and tokens of affection—but Dunn’s research shows that spending money on others, especially a loved one, is one of the happiest things you can do with your money. (In one study, people who had been asked to spend $5 on someone else felt better at the end of the day than those who’d been asked to spend it on themselves.) It’s the thought that counts, too: Both givers and receivers are happier when a gift is a good fit for the recipient’s personality.

Use a debit, not credit card

Being in debt is negatively associated with happiness, and is linked to health problems such as depression and anxiety. It may be hard to avoid all forms of debt, but one way to keep from falling deeper into it is to make everyday purchases with debit accounts, rather than charging them. “Debit cards are way happier plastic,” says Dunn. “They provide a lot of the same conveniences as credit cards, but don’t have the same long-term problems associated with them.”

Health.com: 14 Reasons You’re Always Tired

This article originally appeared on Health.com.

TIME Mental Health/Psychology

Pesticide Poisoning Is The Leading Method of Suicide

For the more than 800,000 people who take their lives each year around the world, pesticide poisoning is the most frequently used method, according to a new report from the World Health Organization.

“Restricting access to the means of suicide is effective in preventing suicide – particularly impulsive suicide – as it gives those contemplating suicide more time to reconsider,” the report said.

Methods of suicide vary significantly from region to region, and pesticide poisoning is most common in rural regions where the chemicals are readily available. In the United States, easy access to guns helps make firearms the most common method.

The report argues that suicide is preventable and calls on communities to fight the stigma that surrounds mental health issues and to take action on the issue.

“Every suicide is a tragedy,” said WHO Director-General Margaret Chan in the report. “The impact on families, friends and communities is devastating and far-reaching, even long after persons dear to them have taken their own lives.”

TIME Mental Health/Psychology

Family Dinners Protect Against The Effects of Cyberbullying

An argument for sitting down to dinner

About 1 in 5 young people experience some form of online bullying, which can have serious effects on mental health and behavior. However, a recent study shows that eating dinner as a family may actually protect against some of the negative effects of being bullied.

In the new research published in the journal JAMA Pediatrics, the researchers surveyed 18,834 students between the ages of 12 and 18 from 49 schools in the Midwest. Their findings showed a positive association between cyberbullying and problems like anxiety, depression and self-harm as well as substance abuse like frequent drinking and prescription drug abuse.

Interestingly, the researchers found teens eating dinner with their families reduced the effects of cyberbullying. The data show that when there are no family dinners, there’s an increase in the rates of problems with cyberbullying, but four or more family dinners a week resulted in fewer problems.

“With more frequent dinners comes more regular family contact, which facilitates parental guidance and support, open communication with parents and siblings, and opportunities for adolescents to express problems and concerns as they arise,” the study authors write.

The researchers acknowledge that their findings do not conclude that bullying on its own is enough to increase the risk for mental health and behavioral problems, nor are family dinners necessarily enough to protect against them, since there are several other factors in an adolescent’s environment that could play a role.

It’s likely that having family dinners can serve as a release for young people, and that they benefit from communicating their problems and frequently interacting with their family. It’s an argument for seeing family meals as more than just an opportunity to eat.

TIME health

5 Ways to Relax In No Time At All

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Ever felt like you just can’t unwind after a demanding week? That’s because stress triggers your body’s fight or flight response: your adrenaline starts pumping, your heart beats faster, and your blood pressure rises, explains Ash Nadkarni, MD, an associate psychiatrist at Brigham & Women’s Hospital. “Long-term overexposure to stress hormones can cause increased risk of health problems such as anxiety, depression, heart disease, weight gain, and memory and concentration problems,” Dr. Nadkarni adds.

That’s not exactly a relaxing thought. So what should you do when calming classics like downward-facing dog and chamomile tea don’t work? Check out these alternative ways to de-stress recommended by experts and recent studies.

Health.com: 12 Signs You May Have an Anxiety Disorder

Wake up early

It may feel counterintuitive to deprive yourself of sleep, but giving yourself an extra 15 to 20 minutes before you head out the door will leave you feeling more refreshed—and less frazzled. “Take time in the morning to center yourself,” says San Francisco-based psychologist Leslie Carr, PsyD. “A lot of people shoot out into their days like a rocket ship and it never gets better from there,”

Consider that caffeine takes 20 minutes to be metabolized for you to feel its effect. During that time, think about your goals for the day or read something inspirational. You might find that your normally crazy day goes a little smoother.

Health.com: 25 Surprising Ways Stress Affects Your Health

Create a soothing space

Research suggests that warm colors like red excite you and cooler, muted colors like blue, green, or grey relax you, says Molly Roberts, MD, president of the American Holistic Medical Association—but surrounding yourself in any color you find soothing can help bring on calm. “The theory behind the use of color therapy is that colors enter the eyes, which then send messages along the nerve pathways to the area of the brain that regulates emotion,” Roberts says. “There are a lot of ways to surround yourself with colors that can ease stress throughout the day.” Her suggestions: at home, paint an accent wall; and at the office, drape a soothing-colored scarf over the back of your chair and change your computer screensaver.

Clean out your junk drawers

When you’re feeling emotionally drained, chances are whipping out your Swiffer is the last thing you want to do. But the truth is, tidying up your home can also tidy up your mind. “Having a mindset of de-cluttering helps to manage stress,” says Lauren Napolitano, PsyD, a psychologist at Bryn Mawr Hospital in Pennsylvania. “Purging unused items gives a sense of order to your physical environment, which helps you feel calmer about your stressors.” She suggests starting with a small project, like your kitchen junk drawer. “Tangible or visible organization leads to emotional organization,” Napolitano says. If you’re ready to take it up a notch, schedule monthly donation pickups with Goodwill to keep yourself in the de-cluttering habit.

Visualize your stressful thoughts

Your coworker just threw you under the bus. Your husband forgot to walk the dog. When it’s that kind of day, try thought diffusion, “a sort of visual mindfulness meditation, a way to sweep out whatever is buzzing around unhelpfully in your head,” says Erin Olivo, PhD, an assistant professor of medical psychology at Columbia University and author of Wise Mind Living: Master Your Emotions, Transform Your Life.
Health.com: The Worst Ways to Deal With Stress
Here’s how it works: Imagine your thoughts are like clouds in the sky, and let them drift by above you. “When you begin to observe your thoughts as mental objects that simply come and go, they become less unpleasant, less threatening and less emotionally powerful,” Olivo says.

Watch cat videos

There’s a reason Buzzfeed links are popping up all over your newsfeed. There’s nothing that will relieve some tension like watching a baby masterfully dancing to Beyonce or a cat riding a Roomba in a shark costume.

“After a stressful day, looking at these funny things actually activates the part of the brain that delivers tranquility and a calm physiological response,” says Rose Hanna, a relationship counselor and professor of psychology and women’s studies at California State University Long Beach. “This decreases anxiety and helps tremendously with reducing stress.”

Health.com: 14 Reasons You’re Always Tired

13 Ways to Beat Stress in 15 Minutes or Less originally appeared on Health.com.

TIME Mental Health/Psychology

You Asked: What’s the Best Bedtime?

Illustration by Peter Oumanski for TIME

The earlier the better? 11 PM? Sundown? Sleep experts say it’s not that simple. But there is a time range you should shoot for if you’re questing for a perfect night’s sleep

Every hour of sleep before midnight is worth two after midnight. Your grandparents (and great grandparents) probably adhered to that creaky adage. “The mythology is unfortunate, because there’s no pumpkin-like magic that occurs,” says Dr. Matt Walker, head of the Sleep and Neuroimaging Lab at the University of California, Berkeley. And while nothing special happens to you or the quality of your sleep at the stroke of midnight, many do wonder: What’s the best time to go to bed?

Walker says your sleep quality does change as the night wears on. “The time of night when you sleep makes a significant difference in terms of the structure and quality of your sleep,” he explains. Your slumber is composed of a series of 90-minute cycles during which your brain moves from deep, non-rapid eye movement (non-REM) sleep to REM sleep. “That 90-minute cycle is fairly stable throughout the night,” Walker explains. “But the ratio of non-REM to REM sleep changes.”

He says that non-REM sleep tends to dominate your slumber cycles in the early part of the night. But as the clock creeps toward daybreak, REM sleep muscles in. That’s significant, because some research has suggested that non-REM sleep is deeper and more restorative than lighter, dream-infused REM sleep—though Walker says both offer important benefits.

What does this have to do with the perfect bedtime? The shift from non-REM to REM sleep happens at certain times of the night regardless of when you go to bed, Walker says. So if you hit the sack very late—at, say, 3 AM—your sleep will tilt toward lighter, REM-heavy sleep. And that reduction in deep, restorative sleep may leave you groggy and blunt-minded the next day.

That’s unfortunate news for nightshift workers, bartenders, and others with unconventional sleep-wake routines, because they can’t sleep efficiently at odd hours of the day or night, Walker says. “The idea that you can learn to work at night and sleep during the day—you just can’t do that and be at your best.” Your brain and body’s circadian rhythms—which regulate everything from your sleeping patterns to your energy and hunger levels—tell your brain what kind of slumber to crave. And no matter how hard you try to reset or reschedule your circadian rhythms when it comes to bedtime, there’s just not much wiggle room. “These cycles have been established for hundreds of thousands of years,” Walker explains. “Thirty or 40 years of professional life aren’t going to change them.”

When it comes to bedtime, he says there’s a window of a several hours—roughly between 8 PM and 12 AM—during which your brain and body have the opportunity to get all the non-REM and REM shuteye they need to function optimally. And, believe it or not, your genetic makeup dictates whether you’re more comfortable going to bed earlier or later within that rough 8-to-midnight window, says Dr. Allison Siebern, associate director of the Insomnia & Behavioral Sleep Medicine Program at Stanford University.

“For people who are night owls, going to bed very early goes against their physiology,” Siebern explains. The same is true for “morning larks” who try to stay up late. For either type of person—as well as for the vast majority of sleepers who fall somewhere in between—the best bedtime is the hour of the evening when they feel most sleepy.

That means night owls shouldn’t try to force themselves to bed at 9 or 10 if they’re not tired. Of course, your work schedule or family life may dictate when you have to get up in the morning. But if you can find a way to match your sleep schedule to your biology—and get a full eight hours of Z’s—you’ll be better off, she adds.

Both she and Walker say your ideal bedtime will also change as you age. While small children tend to be most tired early in the evening, the opposite is true for college-aged adults who may be more comfortable going to bed around or after midnight. Beyond college, your best bedtime will likely creep earlier and earlier as you age, Walker says. And again, all of this is set by your biology.

Siebern suggests experimenting with different bedtimes and using sleepiness as your barometer for a best fit. Just make sure you’re rising at roughly the same time every morning—weekdays or weekends. It’s fine to sleep an extra hour on your days off. But if you’re getting up at 6:30 during the workweek and sleeping until 10 on weekends, you’re going to throw off your sleep rhythms and make bedtime more challenging, she says.

TIME psychology

Can You Really Predict What Will Make You Happy?

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Here’s what most people think will make them happy, in order of importance:

Via The Optimism Bias: A Tour of the Irrationally Positive Brain:

A survey of more than 2,015 people conducted by the British research company Ipsos MORI revealed that people believe the following five factors are most likely to enhance happiness (they are listed in order of importance).

1) More time with family
2) Earning double what I do now
3) Better health
4) More time with friends
5) More traveling

Are they right?

Looking at the research, and sticking with just these five options, the order of importance looks more like this:

1) Better health
2) More time with friends
3) More time with family
4) More traveling
5) Earning double what I do now

Health

How people value health varies dramatically based on age, which probably isn’t too much of a surprise. Tali Sharot points out that:

Only 10 percent of respondents from fifteen to twenty-four years old rated better health as one of the top five factors that would make them happy, as opposed to 45 percent of people over seventy-five.

That said, economists value your health as equivalent to an extra $463,170 a year, dwarfing other factors:

Improvement in health has one of the largest effects on life satisfaction; a move from having a very poor health to having an excellent health is worth around an extra £300,000 a year.

A good deal of research lumps friends and family together. Harvard Happiness expert Daniel Gilbert (author of the bestseller Stumbling on Happiness) sums up much of his research by saying:

Family & Friends

We are happy when we have family, we are happy when we have friends and almost all the other things we think make us happy are actually just ways of getting more family and friends.

Having a better social life can be worth as much as an additional $131,232 a year in terms of life satisfaction:

I find that an increase in the level of social involvements is worth up to an extra £85,000 a year in terms of life satisfaction. Actual changes in income, on the other hand, buy very little happiness.

Slumdwellers in Calcutta are much happier than you might expect largely due to relationships.

Travel

Travel, in terms of vacations, provides a modest benefit. (Commuting, on the other hand is devastating to happiness and might even end marriages.)

Money

Money, once you get above a pretty good salary, doesn’t add much happiness:

…people in the US who make $75,000 a year…are just as happy as those who make $150,000. Any higher income is not going to increase emotional well-being, but a lower income is associated with less emotional well-being, Scollon explained.

That said, how you spend money can affect how much it increases happiness. And at the risk of splitting hairs, while money has very little effect on moment to moment happiness, it is associated with being more satisfied with your life when looked at in the big picture.

Why do we get it so wrong?

Looking at Daniel Gilbert’s Stumbling on Happiness my main takeaway was this:

Much of our unhappiness springs from the fact that we’re terrible at accurately remembering how things made us feel in the past, so we make bad choices regarding the future.

In Gilbert’s own words (and backed up by many studies):

We overestimate how happy we will be on our birthdays, we underestimate how happy we will be on Monday mornings, and we make these mundane but erroneous predictions again and again, despite their regular disconfirmation.

Do you dread going to work, going to the gym or to that family gathering? How do you really feel when you finally get there or after? It’s often very different from your prediction. Some things that look like an enormous chore to do in the future are actually very fulfilling in the moment and afterward… like, oh, blogging.

Stop trusting your memory. Write things down.

Does that seem like work?

Well, Gilbert has a great research-backed suggestion that is quick and easy:Look at other people, what they do, and how they react in the moment:

This trio of studies suggests that when people are deprived of the information that imagination requires and are thus forced to use others as surrogates, they make remarkably accurate predictions about their future feelings, which suggests that the best way to predict our feelings tomorrow is to see how others are feeling today.

Want to learn more about what will make you happy? Go here.

TIME Mental Health/Psychology

Why Waiting Actually Makes You Happy

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Want to know the secret to happiness? Wait for it.

No, really. Wait for it. As long as the “it” is an experience, according to a series of new studies published in the journal Psychological Science.

We already know that experiences make you way happier than things do. Studies have shown that spending money on experiences as opposed to goods is more meaningful, makes you less likely to compare yourself to others, and encourages more social engagement. (Vacations trump solo shopping sprees, in other words.) You get those same pleasurable effects long before you even make the purchase and now, researchers have found, waiting to buy those experiences is a lot more fun, too.

One study asked college students to think about a purchase they were going to make in their near future, whether material or experiential, and report how they felt while waiting. People were more excited when waiting to buy an experience—and more impatient when waiting to buy something material.

The next study pinged more than 2,000 people enrolled in the scientific project trackyourhappiness.org throughout the day on their smartphones, asking how happy they were feeling at that moment. Of those daydreaming about a purchase they would soon make, experience-buyers won again in the happiness department.

In the final two studies, researchers scoured newspaper articles about people waiting in long lines and found that people queuing up for an experience, like buying concert tickets or delicious food, were better behaved than those waiting to buy stuff, like gadgets. And when people were asked to reminisce about times they’ve waited in line, they rated experiential waits as more pleasant.

It’s a little counterintuitive why experiences make us happier. After all, you’ll have a material purchase far longer than you’ll actually be on vacation. “The irony is that although this is true in a material sense, it is not true psychologically,” the study authors write–we’re far too good at adapting, which dulls our appreciation for the material objects that surround us every day. So reconsider that fancy TV and take a trip instead. Just make sure to give yourself enough time to savor the wait until takeoff.

TIME Mental Health/Psychology

1 in 7 People Suffer From Being ‘Sleep Drunk’

Alarm clock
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Severe disorientation while waking up or falling asleep could be a real problem

It’s a scene familiar to about 15% of us. Your alarm goes off in the morning, but instead of waking up alert (if not especially chipper), you’re entirely confused by what’s going on. You may be disoriented, not know where you are, and you may even try to answer your alarm as though it were a phone call.

If that’s happened to you, it’s because you’re sleep drunk.

According to a new report published in the journal Neurology, sleep drunkenness—which is having trouble coming to full wakefulness after sleep, accompanied by intense confusion and disorientation, and even sometimes violent reactions and amnesia—is a serious and surprisingly common problem.

Researchers at Stanford University School of Medicine interviewed 19,136 people ages 18 and older about their sleep behaviors, mental health, and medication use and found that about 15% of the participants had experienced a sleep drunkenness episode in the last year, with over half of those people reporting experiencing an episode a week. Further data suggests there may be a connection between sleep drunkenness and other factors, including mental health.

Among those who had reported sleep drunkenness episodes, 84% also had either a sleep disorder, a mental health disorder or were taking drugs like antidepressants, which suggests that sleep drunkenness could be a symptom of—or a red flag for—other problems that could disrupt sleep quality.

The researchers say that even though sleep-related problems like sleep drunkenness get less attention compared to behaviors like sleep walking, they can be just as dangerous, and more research should be done to determine the best ways to treat it.

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