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A great deal of research has investigated the tricky realms of parenting and romantic relationships. Yet studies on friendship—which can offer so much joy and meaning in life—remain less common.

This year, University of Kansas researcher Jeffrey A. Hall helped demystify the process of friendship-building in a  published in the . It’s the first to explore how many hours it takes for an acquaintance to become a friend.

Hall surveyed 112 college students every three weeks during their first nine weeks at a Midwestern university. He also gave a one-time questionnaire to 355 American adults who had moved to a new city in the past six months. In these surveys, the newcomers picked a friend or two and reported how much time they spent together and how close the friendship became.

With this data, Hall was able to approximate how many hours it took for different levels of friendship to emerge:

• It took students 43 hours and adults 94 hours to turn acquaintances into casual friends.
• Students needed 57 hours to transition from casual friends to friends. Adults needed, on average, 164 hours.
• For students, friends became good or best friends after about 119 hours. Adults needed an added 100 hours to make that happen.

How do you know if someone is destined to become your bestie or remain a polite acquaintance? Hall asked people what kind of activities they did with their friends, but no one clear path to intimacy was found. However, a  this year that they could predict which people were friends based on their brain activity. Friends, it seems, share not just secrets and hugs but similar neural responses to the world.

These findings offer hope—and a dash of perspective—to those of us feeling lonely and yearning to find our crowd.

“Making friends takes time,” Hall says. “Everyone wants to have friends, but you can’t have friends without making them.”

2. You’re not as good at empathy as you think you are

Do you consider yourself to be pretty good at identifying what other people are feeling? Well, don’t be too confident, suggest four recent studies.

, published in the , ran multiple experiments testing how accurately people gauged the feelings and thoughts of others. Some people were specifically instructed to try to walk in others’ shoes, while others were instead asked to do things like concentrate hard or imitate the expression on the other person’s face. The researchers found that the shoe-walkers did no better at accurately reading another person than any of the other groups—and, in some cases, they did worse.

We can better understand others if we simply ask them questions and listen carefully.

In yet , researchers asked some participants to look at the face of a person who was watching an emotionally evocative video—and then guess the emotion in the video from the face of the watcher. Another group simply watched the video and tried to imagine how it would make a stranger feel. You might think that faces are an open book, but the people who tried to guess the emotion in the video from a watcher’s face were more often wrong than those who just watched the same video themselves.

In these studies, the most confident people were often the least accurate at empathizing. The problem is hubris—thinking we understand people better than we do and jumping to unwarranted conclusions. But we have ways to improve our empathic skills. Over the long term, we can work on developing our own self-awareness—since, in two  this year, more self-aware people were .

In the meantime, we can better understand others—whether a spouse or someone on the other side of the political spectrum—if we simply ask them questions and listen carefully to the answers.

3. Mindfulness can help you manage your anger

All of us have probably lost our cool at one time or another—maybe yelling at a phone company representative or at a child who misbehaved. But these outbursts are rarely  effective, and they often leave us feeling ashamed and regretful.

How to handle anger better? Recent studies suggest  could help.

In a  published in , David DeSteno and his colleagues randomly assigned participants to either a three-week mindfulness course (training in breath and body awareness, open awareness of thoughts, and not judging experiences) or a control activity that involved solving cognitive puzzles, before bringing both groups into a lab. There they gave a talk—and then received a scathing review of their performance from an undercover research assistant in the audience. Afterwards, researchers asked them to make a condiment mixture for their critics to sample based on a few ingredients, including a very hot pepper sauce—a way to see how aggressive they would be.

The results? Those who’d practiced mindfulness meditation said they were just as angry as non-meditators—but they added significantly less hot sauce to the mix. Apparently, the meditators were more able to feel anger without lashing out.

Mindfulness could help us manage our anger better by staying cool while anger passes through us.

Other recent studies support the idea that mindfulness can help us regulate our emotions amid social tension. In one, were able to maintain lower blood pressure and greater heart rate variability—indicating better recovery from stressors—while discussing marital conflicts than people who were less mindful. Another found that when they were excluded by others, and their brains showed decreased activity in the ventrolateral prefrontal cortex, too—a pattern associated with exerting less cognitive control over emotional upsets.

These finding suggest that mindfulness could help us manage our anger better—not by suppressing it, but by staying cool while anger passes through us. That’s why, DeSteno says, that mindfulness meditation does “exactly what the developers of meditation hoped that it would do: increase ethical behavior by preventing people from inflicting harm on other people in a situation where that’s the normative response.”

4. Sleeplessness breeds loneliness

It’s been long known that when you’re feeling lonely, you may as well. But the opposite appears to be true, too: Poor sleep leads to loneliness.

In a recent  published in , researchers scanned people’s brains both after a normal night’s sleep and after a night of sleep deprivation. Participants watched videos of a stranger approaching them from a distance and pushed a button when they felt the stranger was getting uncomfortably close, while the researchers monitored what was happening in their brains.

Healthy sleep affects our relationships.

After sleeping poorly, participants wanted the strangers to stop at a much greater distance than they did after a night of normal sleep, and their brains reflected a particular pattern: Circuits associated with social repulsion lit up, while circuits involved in theory of mind (our ability to gauge the intentions of others) diminished. This pattern suggests that poor sleep makes people want to avoid other people. Indeed, the poorly slept participants also reported feeling lonelier.

Then, the researchers took the experiment one step further: They asked other people to rate how lonely they thought participants felt by watching videotapes of them. Not only did the raters think the sleep-deprived ones looked lonelier—the raters were also less interested in interacting with them. This implies that poor sleep could lead to a vicious cycle of avoiding others and others avoiding us—a threat to our well-being.

As the researchers conclude, “People who come in contact with a sleep-deprived individual, even through a brief one-minute interaction, feel lonelier themselves as a result, indicating viral contagion of social isolation caused by sleep loss.”

Other studies have shown that healthy sleep affects our relationships by helping us better with others, reduce our , modulate our , and be less susceptible to . These new findings add to that science, demonstrating that a good night’s sleep can help prevent loneliness, too—in ourselves and in those around us.

5. Smartphones can make in-person interactions less enjoyable

As smartphones become ubiquitous, it seems like it’s becoming more and more socially acceptable to use them in different settings. But how does this affect our relationships with other people?

A  published in the Journal of Experimental Social Psychology investigated how smartphones influence in-person interactions by inviting more than 300 people to share a meal with friends or family at a cafe. Some people kept their phones out next to them, while others turned their phones on silent and stowed them away. Afterward, they filled out surveys about their experience.

Ultimately, the people who dined without their phones felt less distracted and (in turn) enjoyed the meal more. They were also less bored and in a better mood. In a separate analysis, the same team of researchers pinged 123 students randomly during their daily life—to find out what they were doing, how they were feeling, and whether they were using their phones—and the same pattern appeared. People just didn’t enjoy socializing as much if they were on their phones.

“Phone use prevents individuals from fully engaging in the present moment.”

“Phone use prevents individuals from fully engaging in the present moment,” the researchers write. “Despite their ability to connect us to others across the globe, phones may undermine the benefits we derive from interacting with those across the table.”

This seems to be true even for people who grew up with smartphones, like the college students in the study. In fact, another  published in Emotion this year suggests that well-being is declining among teens and that screen time may be to blame. A team of researchers led by Jean Twenge found that teens who spend more time on screens and less time on offline activities tend to have reduced well-being. And since 2012, the first year when a majority of Americans owned smartphones, the rise in screen time has gone hand in hand with decreases in teens’ self-esteem and satisfaction with life.

Twenge’s study had one hopeful finding, though: On an individual level, teens who spent more time interacting with friends online also spent more time with friends in person. Our online and offline worlds are not always a zero-sum game—but maybe, as the first study suggests, it’s best not to combine them during the same meal.

6. Teen emotions really are jumbled

If you have any teenagers in your life, you’ve probably witnessed the emotional roller coaster that is adolescence. But why is teen emotional life so rocky, and how is it different from our emotional experience at other ages?

In a  published in , researchers from Harvard and the University of Washington asked participants ages 5 to 25 to look at a series of unpleasant images, such as a baby crying, and rate how much they felt five negative emotions: angry, disgusted, sad, scared, and upset. Their scores were analyzed to see how often they experienced a certain emotion independently from the other four emotions.

Ultimately, the researchers found that adolescents tended to experience many emotions simultaneously—and that they differentiated them poorly. In other words, a teenager might consistently feel angry and sad together, indicating that it is difficult for her to distinguish between the two.

A study found that teaching middle schoolers about their emotions improved their well-being in school.

Adolescence is “a period of more murkiness in what emotions one is feeling,” explains lead author Erik Nook.

Emotion differentiation, the ability to know and accurately label distinct emotions in ourselves, is a sign of good mental health. Those with high emotion differentiation tend to use effective coping strategies in difficult situations instead of turning to unhealthy alternatives such as aggression or alcohol.

Can teenagers improve their ability to differentiate emotions? Or do they just have to wait until adulthood when, the research suggested, people became better at it?

Another 2018  published in Emotion found that teaching middle schoolers about their emotions—specifically, how they can get better at changing them with practice—improved their well-being in school. The key seemed to be understanding that emotion regulation is a skill that can be learned, not something you’re inherently good or bad at.

So while teens do experience a whirlwind of confusing feelings, it’s also possible to help them gain more clarity and feel more in control.

7. We can’t assume that SEL programs meet the needs of all students

This year, we learned that we probably can’t take a one-size-fits-all approach to social-emotional learning at school. Here’s why.

When researchers Hillary Rowe and Edison Trickett  research on 117 U.S. school-based SEL programs with K-12 students, they found that the studies didn’t systematically report on student diversity characteristics, including gender, race/ethnicity, socioeconomic status, disability, and sexual orientation/gender identity. Fifteen percent documented no diversity characteristics, and an added 18 percent documented just one. In addition, they didn’t always analyze the results in specific subgroups to see whether they held up.

Both researchers and educators need to be aware of the challenges that different student populations face.

As a result, the researchers suggest using “considerable caution” when drawing conclusions about whether SEL programs are beneficial to diverse groups of students.

We also learned this year that traditional SEL programs that are more skills-based and adult-driven may not be as effective with adolescents as they are with younger children. Psychologist David Yeager and his colleagues argue in Perspectives on Psychological Science that  that targets their need to achieve “status” and “respect” among their peers.

Ultimately, action-oriented learning opportunities featuring peer mediation or mentoring, student-led projects, and community engagement may be more beneficial to older students, helping them to feel a greater sense of competence, autonomy, and value to others.

Why are these findings important? They remind us that both researchers and educators need to be aware of the challenges that different student populations face, in addition to acknowledging cultural nuances in emotional expression, emotion regulation, and communication style. In other words, we can’t assume that an SEL program will be able to , even if it works for some of them.

8. Americans are divided by identity, not issues

Gun control. Same-sex marriage. Immigration reform. Are you for them or against them?

While you’d probably like to believe that your positions are based on a rational evaluation of the evidence, a wave of studies have found that your voting decisions are more likely to be rooted in your group affiliation.

—titled “”—analyzed data on 2,500 Americans and discovered, surprisingly, that both liberals and conservatives tend to lean left on many individual issues. However, this does not translate into conservatives voting for Democrats who agree with them on those issues.

So, what determines voting behavior? “Americans are dividing themselves socially on the basis of whether they call themselves liberal or conservative, independent of their actual policy differences,” writes political psychologist  of the University of Maryland. An appeal from a politician to voters’ conservative identity can override their personal desire to, for example, keep abortion legal. Team victory becomes more important than solving problems, which in turn discourages compromise on issues.

“Empathy and respect will be critical if we are going to sew our country back together.”

These labels go beyond voting. According to Mason, the more you identify with an ideology or political party, the more likely you are to befriend or marry someone in that group—which in turn reinforces those bonds and makes outsiders seem threatening.

Other work suggests that this antagonism is being aggravated by the racialization of party identity. The Republican Party has become whiter in recent decades, while the Democratic Party has become more racially and religiously diverse. A  of survey data by political scientist Diana Mutz found that nothing predicted support for Donald Trump more than a feeling of threatened status among White Christians—an insight ratified by several studies from  and the .

These are dire developments, but we have many reasons to hope we can overcome them. These studies indicate that Americans really do agree with each other on many issues—we’ve just sorted ourselves into groups and we have lousy intergroup communication skills.

“Liberals and conservatives must take the time to really listen to one another, to understand one another’s values and to think creatively about why someone with very different political and moral commitments from their own should nonetheless come to agree with them,” . “ and respect will be critical if we are going to sew our country back together.”

9. More egalitarian cultures are better for everyone

Living in a country that promotes gender equality may seem like a good idea for many reasons. But does it really affect people’s well-being? A  published in the Journal of Happiness Studies put that question to the test.

Drawing from the —a large data pool tracking well-being around the world—researchers looked at how happy people were in Western Europe, the U.S., Canada, Australia, New Zealand, and Japan. This they compared to specific measures of gender equality in each country, like educational attainment, gender balance in parliament, earned income, life expectancies, and more.

Increases in gender equality during one year corresponded to greater overall well-being that year.

Ultimately, they found that people living in more egalitarian countries had greater overall well-being. This was true even taking into account people’s wealth and income, as well as whether a country was more “individualistic” or “collectivist,” among other factors. Additionally, when looking at changes within a country (rather than comparing countries), increases in gender equality during one year corresponded to greater overall well-being that year.

“The magnitude of the effect of inequality is quite pronounced, meaning that changes in the level of inequality are associated with substantively meaningful changes in the level of well-being,” the authors write.

While these effects were more pronounced for women, men were also better off in more egalitarian countries. Why? Perhaps egalitarianism allows men more emotional freedom, reducing their perceived need to conform to masculine ideals (which is  to unhappiness); or happier women mean happier men (because of ). Or it could be that equity  the economy overall, and that in turn influences everyone’s well-being.

One  suggests another possibility: that when people live in more generally egalitarian cultures—marked by greater social trust and self-expression values—they are less likely to feel inferior to others, and so are happier as a result.

Whatever the reason, the researchers conclude, “To the extent that governments wish to promote the happiness and well-being of their citizens, it may be sensible to prioritize equality.”

10. People may be kinder in racially diverse neighborhoods

Some  has suggested that people are more antisocial in racially diverse areas—that is, less trusting and less kind. But a   found that on a neighborhood level, at least, that might not be true.

The researchers poked and tested their thesis from a variety of angles. In one of the analyses, for example, the research team examined, by ZIP code, 4,500 offers to help survivors of the 2013 Boston marathon bombing. They found “people living in more racially diverse neighborhoods were more likely to offer to make their homes available” to bombing victims, “even after controlling for distance from the bombing site.” In another of the studies, participants who imagined living in a racially diverse neighborhood were more willing to help people than those who imagined living in a more homogeneous one.

To understand how diversity might make us more generous, the researchers recruited 517 Americans, noting the racial diversity of their ZIP codes. They asked participants whether they had helped out a stranger over the past month—and then posed questions about how much those participants identified with “all humans everywhere,” compared to fellow Americans, or residents of their neighborhood. The result: People living in diverse neighborhoods were indeed more likely to identify with all of humanity—and the same people were more likely to report having helped a stranger in the previous month.

These studies aren’t the last word on diversity and altruism—results can be contradictory, and we still don’t understand a lot about multiracial societies. But during a time of intense social and political polarization, we might find in these results some inspiration and encouragement.

This article originally appeared on , the online magazine of the .