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This article originally appeared at the online magazine of UC Berkeley’s Greater Good Science Center.

It鈥檚 time once again for our favorite year-end ritual here at UC Berkeley鈥檚 Greater Good Science Center: Our annual list of the top scientific insights produced by the study of happiness, altruism, mindfulness, gratitude鈥攚hat we call 鈥渢he science of a meaningful life.鈥�

We found that this year, the science of a meaningful life yielded many new insights about the relationship between our inner and outer lives. Cultivating mindfulness can make us more aware of knee-jerk prejudice against people who are different from us; believing that empathy is a skill helps overcome barriers to taking another person鈥檚 perspective; concern for others, even for animals, can move people to action for the greater good more quickly than focusing on ourselves.

But this year we also learned more about how to cultivate pro-social skills like gratitude鈥攁nd we discovered how those skills can yield far-reaching benefits to our mental and physical well-being, and even to our pocketbooks.

With input from our staff, faculty, and some of the leading outside experts in our field, here are the 10 findings from 2014 that we anticipate will have an impact on both scientific research and on public debate for years to come.

1. Mindfulness can reduce racial prejudice鈥攁nd possibly its effects on victims.

Racial bias in policing is at the forefront of our national news. So it was heartening this year to see a that found bias could be reduced through training in mindfulness鈥攖he nonjudgmental moment-to-moment awareness of one鈥檚 thoughts, emotions, and surroundings.

Mindfulness has the power to interrupt the link between past experience and impulsive responding.

Adam Lueke and Brian Gibson of Central Michigan University looked at how instructing white college students in mindfulness would affect their 鈥渋mplicit bias鈥濃�攐r unconscious negative reactions鈥攖o black faces and faces of older people. After listening to a 10-minute mindfulness audiotape, students were significantly less likely to automatically pair negative descriptive words with black and elderly faces than were those in a control group鈥攁 finding that could be important for policing, which often involves split-second assessments of people.

Why the connection between mindfulness and bias? Mindfulness has the power to interrupt the link between past experience and impulsive responding, the authors speculate. This ability to be more discerning may explain why this year found that people who were high in mindfulness were less likely to sink into depression following experiences of discrimination.

As we back in 2009, numerous programs have successfully helped officers become aware of their own unconscious biases. But by specifically looking at the effects of mindfulness training鈥攅ven just 10 minutes鈥� worth鈥攖hese new studies point to innovative techniques that might help prevent fatal mistakes from being made in the future.

2. Gratitude makes us smarter in how we spend money.

For years, Greater Good has been reporting on the social, psychological, and physical benefits of . This year, research suggested that there might be profound economic benefits to a grateful mindset as well鈥攚hich might pay emotional dividends down the line.

The results suggest that gratitude … strengthens self-control and the ability to delay gratification.

In one study, in Psychological Science, researchers asked participants how much money they鈥檇 be willing to forgo in the present in order to receive a greater sum in the future鈥攁 measure of their self-control and financial patience. People prompted to feel grateful were willing to pass up significantly more cash than were people not feeling grateful, even if those less-grateful people were feeling other positive emotions. For instance, happy people were willing to sacrifice $100 in the future (one year later) in order to receive $18 in the present, but grateful people preferred to receive the larger, future payment; they only gave up that $100 when the amount offered to them right away reached $30.

The results suggest that gratitude reduces 鈥渆xcessive economic impatience鈥� and strengthens self-control and the ability to delay gratification, according to the authors. This finding challenges the long-held notion that we must rein in our emotions in order to make smarter spending decisions; instead, it seems that consciously counting our blessings can serve our long-term economic interests.

published this year, in Personality and Individual Differences, suggests that gratitude can guide us toward better decisions about what we actually choose to spend our money on. Participants who were more materialistic鈥攎eaning that they place a lot of importance on acquiring material possessions鈥攔eported lower feelings of gratitude and lower satisfaction with life. In fact, the researchers determined that materialists feel less satisfied with their lives mainly because they experience less gratitude. Their findings help to explain why, according to much previous research, materialistic people are less happy.

Prior research has also found that less happy people make more materialistic purchases, creating a vicious cycle. But the authors of this new study argue that gratitude can help break this cycle. Based on their results, they suggest that boosting one鈥檚 level of gratitude might reduce materialism and its negative effects on happiness.

So gratitude might not only encourage financial decisions that are better for our long-term economic health but better for our long-term emotional health as well.

3. It鈥檚 possible to teach gratitude to young children, with lasting effects.

One of parents鈥� biggest fears is that their child will become an entitled brat; one of their biggest questions is what they can do to prevent that.

The curriculum encourages kids to think about … kindness as a 鈥済ift.鈥�

Instead of just lecturing about the importance of gratitude, the curriculum encourages kids to think about something nice that another person did for them, and to see that kindness as a 鈥済ift.鈥� Through the curriculum, the students reflect on the value of the gift, the cost incurred by the person who gave it, and the kind intentions that motivated the gift.

The curriculum was taught to 8-11-year-olds for half an hour every day for a week鈥攁nd the kids started to show increases in gratitude just two days after the curriculum ended. When Froh and Bono offered the curriculum once a week or five weeks, they found that it increased gratitude and other positive emotions for at least five months.

Dozens of previous studies鈥攎any of which on Greater Good鈥攈ave suggested that gratitude can combat feelings of entitlement and foster happiness. But only a small handful of these studies have examined the effects of gratitude on children, and the kids in Froh and Bono鈥檚 study were the youngest ever involved in a study of a gratitude program.

Their results offer hope that it鈥檚 actually possible to nurture lasting gratitude鈥攁nd happiness鈥攊n children from the time they鈥檙e young. And their provides parents and teachers with concrete guidelines for achieving that goal.

4. Having more variety in our emotions鈥攑ositive or negative鈥攃an make us happier and healthier.

Is the route to simply to feel more positive emotion and less negative emotion? Our cast some doubt on that view, and an even stronger rebuttal emerged this year in published in the Journal of Experimental Psychology: General.

People high in emodiversity were less likely to be depressed than people high in positive emotion alone.

Researchers from four different countries and six different institutions鈥攊ncluding Yale University and Harvard Business School鈥攎easured participants鈥� positive emotions (like amusement, awe, and gratitude) and negative ones (like anger, anxiety, and sadness). They not only looked at the level of these emotions but also their variety and abundance鈥攚hat the researchers call 鈥渆modiversity.鈥�

Their first study surveyed over 35,000 French speakers and found that emodiversity is related to less depression. This was the case for all types of emodiversity: positive (experiencing many different positive emotions), negative (many different negative emotions), and general (a mix of both positive and negative emotions). In fact, people high in emodiversity were less likely to be depressed than people high in positive emotion alone.

With almost 1,300 Belgian participants, the second study linked emodiversity to less medication use, lower government health care costs, and fewer doctor visits and days spent in the hospital. It was also related to better diet, exercise, and smoking habits. Surprisingly, the effect of emodiversity on physical health was about as strong as the effects of positive or negative emotion alone.

? Emotional monotony is a drag, so we may be better off mentally and physically if we seek out and embrace a variety of emotional experiences鈥攅ven the negative ones.

5. Natural selection favors happy people, which is why there are so many of them.

If you subscribe to the philosopher Thomas Hobbes鈥� view of life as 鈥渘asty, brutish, and short鈥濃�攁s many people do鈥攜ou鈥檇 naturally expect humans to live a pretty miserable existence. But many studies from around the world have suggested that, on average, humans鈥� default emotional state is to be pretty happy, regardless of their life circumstances鈥攁 phenomenon researchers call 鈥減ositive mood offset.鈥�

Many of the chief benefits of happiness … increase a person鈥檚 chances of passing his or her genes to the next generation.

This year, a massive review of the research on happiness set out to explore ; the study, published in Personality and Social Psychology Review, was led by Ed Diener, a pioneer in the science of happiness.

Given the benefits they find to be strongly associated with happiness, the researchers conclude that the ubiquity of happiness is a product of human evolution. Why? Because many of the chief benefits of happiness鈥攊ncluding better health, longer lives, greater fertility, higher income, and more sociability鈥攊ncrease a person鈥檚 chances of passing his or her genes to the next generation.

鈥淧eople are happy most of the time because they are descended from ancestors who were happier and engaged in fitness-maximizing behavior more frequently than their neighbors who were less happy,鈥� they write.

In other words, natural selection favors happy people, leaving us with more of them today.

Of course, though based on an especially comprehensive review of happiness research, Diener and his colleagues stress that this is just a hypothesis鈥攁lbeit one worth subjecting to future study. 鈥淎lthough our opposable thumbs, big brains, and upright posture have all received in-depth attention and study as reasons for human [evolutionary] success,鈥� they write, 鈥渋t is time to consider how positive mood offset might have also contributed.鈥�

6. Activities from positive psychology don鈥檛 just make happy people happier鈥攖hey can also help alleviate suffering.

This idea that happiness might arise from natural selection suggests that, perhaps, you鈥檙e either born happy or you鈥檙e not. But research on positive psychology activities鈥攍ike keeping a gratitude journal or regular meditation鈥攈as offered compelling evidence that it鈥檚 possible to cultivate happiness over time. What鈥檚 more, during the past year, we saw many different papers suggest that positive activities aren鈥檛 just for positive people, and that negative conditions aren鈥檛 just alleviated by targeting negative influences. Instead, nurturing positive skills can help pull people out of depression, anxiety, and even suicidal thoughts.

Participants鈥� ability to forgive themselves and others seemed closely associated with the will to keep on living.

The key, it seems, lies in the way these skills enhance relationships. found that 11 people who had gone through an eight-week Mindfulness-Based Cognitive Therapy course became less stressed about relationships with friends, family, and coworkers鈥攚hich, in turn, helped prevent future episodes of depression.

in the July issue of the Journal of Affective Disorders looked at the impact of another positive behavior, , on reducing suicidal thoughts in impoverished, rural people. The researchers found that participants鈥� ability to forgive themselves and others seemed closely associated with the will to keep on living. They also found that forgiveness seemed to reduce participants鈥� feelings of being a burden to others, and people who were able to forgive themselves for being a burden to others were much less suicidal. found that keeping a journal about gratitude or kindness helped people who were on waiting lists to receive psychological counseling.

The upshot of this research is that there are likely far-reaching applications of the skills targeted by positive psychology. As researchers move forward in understanding how we can foster human strengths and use them to save lives, clinicians and teachers can put these insights to use in real-world settings.

7. People with a 鈥済rowth mindset鈥� are more likely to overcome barriers to empathy.

Just as many people believe that you鈥檙e either happy or you鈥檙e not, so many believe that you鈥檙e either empathic or you鈥檙e not. The trouble with this 鈥渇ixed mindset鈥� about empathy is that the ability to sense the feelings or take the perspective of others is , such as when we are stressed or overwhelmed by other people鈥檚 needs. Some research is even showing that stressed-out, hyper-connected Americans are becoming less and less empathic.

According to a published in the Journal of Social Psychology, our beliefs about are critical to fostering it. Stanford University researchers recruited 75 participants, asking them to pick one of these two statements as being true: 鈥淚n general, people cannot change how empathic a person they are鈥� or 鈥淚n general, people can change how empathic a person they are.鈥� Across five studies, they tested their hypothesis in situations where empathy is both challenging and 鈥渃rucial to positive social outcomes,鈥� such as pitting the participant against someone with different political views.

Anyone can cultivate empathic skills鈥攅ven psychopaths.

In the final study, researchers told half of the participants that they had failed a diagnostic test of emotional understanding and that the other half succeeded. Then they gave participants a chance to go through exercises that might improve their empathy鈥攖heorizing that 鈥減articipants induced to have a malleable, as opposed to fixed, theory of empathy would be more likely to capitalize on this opportunity to develop their empathic abilities.鈥�

This turned out to be true. People primed to see empathy as a skill鈥攊n other words, people given a 鈥済rowth mindset鈥� about empathy, seeing it as something one can build through practice鈥攚ere more likely to 鈥渟tretch themselves to overcome their limitations.鈥� Across all of their studies, they found that people who believe empathy can be developed expended greater effort in challenging contexts than did people who believe empathy cannot be developed, suggesting that our beliefs about ourselves are key to expanding empathy on both individual and societal levels.

This insight echoes a trend we highlighted in of top scientific insights: Anyone can cultivate empathic skills鈥攅ven psychopaths. And in fact, this year from the United Kingdom extended those findings to narcissists, finding that even they could be coached into taking another person鈥檚 perspective.

8. To get people to take action against climate change, talk to them about birds.

Imagine what might happen in the future if climate change goes unchecked. Are you more likely to take action to prevent that outcome if you feel like it is a threat to humans? Or are you more likely to reduce your carbon footprint if you fear for the safety of other animals, like birds? Well, according to a group of scientists at Cornell University, .

The researchers 3,546 people (largely bird-watchers) to evaluate how their willingness to engage in climate-friendly actions might be affected by how the problem of climate change is described to them. Specifically, respondents were presented with these four statements and, after each, asked about their willingness to lessen their carbon footprint:

1. Climate change is a danger to people.
2. Climate change is a danger to birds.
3. If a large number of Americans do something small to reduce their use of fossil fuels, it would have a large impact on our national carbon footprint.
4. If a large number of Americans do something small to reduce their use of fossil fuels, it would have a large impact on our national carbon footprint鈥攁nd be of benefit to future generations.

Invoking a threat to birds led to the most significant change of all.

As expected, the findings revealed that the positive framing of the climate problem (numbers 3 and 4) increased people鈥檚 willingness to take action. Numerous earlier studies have shown that positive messages鈥攕uch as those that emphasize the collective impact of carbon-cutting measures鈥攁re generally more effective than fear-based messages. But responses to the two fear-based messages (numbers 1 and 2) revealed a surprise: Invoking a threat to humans led to no significant impact on the respondents鈥� willingness to reduce their carbon footprint鈥攚hile invoking a threat to birds led to the most significant change of all.

Why would a threat to birds provoke more willingness to act than a threat to humans? One theory suggests that threats to humans cause us to think about death, which activates defenses against the anxiety caused by confronting our own mortality. Researcher Janis Dickson says the findings do point to a potentially important lesson for educators and communicators: Combining a sense of empowerment (by reminding people of our collective impact) with (for non-human others) can help cultivate the psychological resilience needed to overcome denial and inaction.

9. Feelings of well-being might spur extraordinary acts of altruism.

What would motivate someone to donate a kidney to someone they have never met?

A published in the journal Psychological Science looked at this act of extreme in all 50 states, cross-referencing donations with data on each state鈥檚 levels of 鈥渨ell-being,鈥� which refers to people鈥檚 levels of life satisfaction, emotional health, physical health, healthy behavior (e.g., exercise, good diet), job satisfaction, and ability to meet their basic needs like food and safety. By analyzing statewide data, the Georgetown University researchers hoped to find large-scale trends that might not be apparent from looking at individual cases.

鈥淧olicies that promote well-being may help to generate a virtuous circle…”

Their efforts paid off. showed that states with high levels of well-being tended to have higher rates of 鈥渁ltruistic鈥� kidney donation鈥攌idney donation to a stranger. Indeed, the researchers found that even when controlling for key factors such as education, race, age, income, and religiosity, a state鈥檚 level of well-being still significantly predicted donation rates. Furthermore, analyses combining states into larger geographical regions confirmed that as well-being increases, so do rates of kidney donation to strangers. And because altruistic kidney donation happens relatively rarely, the researchers were able to rule out the possibility that these altruistic acts caused widespread increases in happiness rather than the other way around.

So while prior research has suggested that performing altruistic acts fosters feelings of happiness, this important study adds a new twist: Feelings of happiness might actually spur extraordinary acts of altruism. This insight has real-world implications. , 鈥淧olicies that promote well-being may help to generate a virtuous circle, whereby increases in well-being promote altruism that, in turn, increases well-being. Such a cycle holds the promise of creating a 鈥榮ustainable happiness鈥� with broad benefits for altruists, their beneficiaries, and society at large.鈥�

10. Extreme altruism is motivated by intuition鈥攐ur compassionate instincts.

While the previous insight relied upon big-picture aggregate data to understand how social context influences altruistic acts, this year the same Georgetown University team that conducted that study went deeper into the individual human mind to understand the psychology of altruism. has identified patterns of brain activity related to extreme anti-social behavior, but this tried to locate the neural mechanisms that might support extreme pro-social tendencies.

The gut-level decision overrode any deliberative process.

Researchers Kristin M. Brethel-Haurwitz and Abigail A. Marsh used brain imaging technology to map the brains of kidney donors, who make an extraordinary sacrifice for total strangers; they then compared these brain images with those of psychopaths and people who did not show extremes on either side of the pro-social divide. They found that the brains of extraordinary altruists had slightly larger right amygdalae鈥攁 brain area associated with a fearful response鈥攁nd they reacted very strongly to fearful facial expressions鈥攖he exact opposite of psychopaths.

How might these different brain structures show up in behavior? Another research team, this one at Yale University, examined the testimony of Carnegie Hero Medal Recipients, who all risked their lives to save others. that recipients鈥� decisions to help were 鈥渙verwhelmingly dominated by intuition鈥� and 鈥渟ignificantly more intuitive than a set of control statements describing deliberative decision-making.鈥� This remained true even when researchers took into account that the medal winners had enough time to think before they acted, suggesting that the gut-level decision overrode any deliberative process.

Taken together, these findings from Yale and Georgetown reveal how extreme, heroic acts of altruism might be motivated by deeply-rooted, even instinctive, psychological processes.

To what degree are these different brain structures鈥攁nd the instincts that spring from them鈥攕haped by nature or nurture? That鈥檚 a question that research will need to tackle in 2015.