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From NPR, this is Hidden Brain, I'm Shankar Vedantam. Here's a question we get asked all the time. How do you change someone's behavior? How awesome would it be if you, the victim, decided to not get upset?


Experts trying to change the way we live our lives. The biggest single cause of global warming, along with deforestation, which is 20 percent of it, is the burning of fossil fuels. Oil is a problem and coal is the most serious problem.


President's trying to reshape our culture for we have a choice in this country. We can accept a politics that breeds division or we can come together and say, not this time.


We like to think we change people's behavior through information, through education, through persuasion. Now, these things often don't work, but we keep doing them because we have an unshakable faith in a core assumption about human nature. If you want to shape how people behave, you must first change the way they think. Today, we look at a very different approach, one that will take us on a journey from the outskirts of Budapest in 1944 to the hills of Rwanda a half century later.


This week on Hidden Brain How to Change Behavior, it's not what you think. This message comes from NPR sponsor Better Help. Every day, thousands of people seek the help of a licensed therapist at Better Help Dotcom. If you are a psychologist, marriage and family therapist, clinical social worker or board licensed professional counselor, better help is the easiest way to apply your clinical expertise online. With better help, you can focus 100 percent of your time on counseling, visit better health outcomes, join better help and complete a brief application to get started.


When Irvin's Dow was a small child, his family had a live in caretaker named Maria Gogin. Irvin had his own name for her. We called her March, which is an abbreviation of the Hungarian word Majken, which means cat.


That's because much old Irving and his sister bedtime stories. And sometimes, as she told these stories, she'd curl up at the foot of the bed and fall asleep.


Outside that cozy house, things were very different, Ervin faced a dangerous world. You see, Ervin was not just a six year old child, but a six year old Jewish child, of course.


Hungary was not a friendly place to be Jewish since the 1920s, the Hungarian government had passed a series of anti Jewish laws restricting Jews from certain occupations, stripping them of the right to vote, prohibiting intermarriage with non Jews.


When World War two erupted, Irvin and his family were in grave danger.


Ervand remembers walking with March, pushing his little sister down the street in a baby carriage. He heard a massive rumbling and turned to see German tanks rolling down the street. In 1944, Germans occupied the country with the help of hundreds of thousands of Hungarian citizens.


They rounded up the country's Jews as nearly half a million people were dragged off to places like Auschwitz. Most Hungarians did nothing to help.


They simply watched as their friends and neighbors disappeared. Ervin's father was captured, young Irvin might have faced the same fate, but someone intervened to help. It was Maria how much she took my sister and me into hiding with a Christian family to feed the children and their mother, much would carry large amounts of dough and the baby carriage to the bakery and then come back with freshly baked loaves.


But one day, Hungarian Nazis saw all the bread that she was carrying and they got suspicious. They stopped her.


They told her that if she's going to have Jews, she will be killed. Had her stand at the wall with her hands up for a very long time.


Eventually, a man from the neighborhood, a well respected Hungarian Nazi, saw what was happening and he told the others to stop. One might think that after such a terrifying experience, March might have stopped helping the Staab family.


But she kept on and she continued to do the same thing for the rest of the time.


March also found out where Earvin's father was being held in a forced labor camp. She went there and approached the wire fencing. She asked someone to summon Earvin's dad through the fence. She told him where she had taken the children.


So when the whole group from this forced labor camp was taken to Germany, they had a stopover in Budapest. And during that stopover, my father escaped. His father found the house with Ervin and his sister. They all hit together and managed to survive the war.


Oregon is very sure that March saved his life and the lives of his immediate family.


Other relatives who didn't have someone like Mark to help them perished. My father, sister and her two children were killed in Auschwitz, my mother's sister's husband, my uncle, died in a forced labor camp. As Irwin grew up, he found himself dwelling on the question, why do people do terrible things to one another? And is it possible to stop them? Ervin eventually got a Ph.D. in psychology from Stanford and taught clinical psychology at Harvard University.


All the while, he kept researching how the Nazis dehumanized the Jews as a stepping stone to genocide.


He studied the factors that led to Hitler's rise and Nazi ideology. Evil leaders can get people riled up by the spark of hate usually doesn't turn into a fire unless people are also experiencing difficult life conditions.


So if Germany had not been in the terrible state that it was in losing a war, a revolution, people in groups fighting on the streets for years at tremendous depression, if Germany hadn't had that combined with a history of devaluation of Jews, then it is unlikely that Hitler would have been hurt.


It's unlikely that Hitler's maniacal, intense but charismatic capacity to talk to people would have had the kind of effects that he did. So, yes, evil people are important, but not alone. Bad leaders don't alone created. Ervin developed a theory of how genocide comes about as leaders spread hateful ideologies and as people get used to ostracizing others, hostility between groups slowly evolves into violence or even came up with a term for this gradual process, the continuum of destruction.


Violence evolves, it is experimental research that shows that when a person engages in a violent action, they are likely to engage in more and greater violence in studying a variety of genocide and mass killings. I saw this in every case that people get devalued. Devaluation is justified in terms of the ideology, in reference to the ideology that these people stand in the way of us creating this better world. So this is very important to understand and very important to try to counteract or even try to imagine what might have stopped this march to violence from his own experience.


He knew that active bystanders can have a huge impact in saving the lives of victims. But in any conflict, why do some bystanders choose to intervene while so many others stay silent?


Why had March taken such great risks to save Irvin and his family?


I think she did it because she loved us, because she was connected us, because she saw us as human beings and didn't accept and go along with the devaluation of Jews. That was part of the society at that time.


Close personal relationships between Jews and Christians could inoculate people against stereotypes and prejudice, the close relationship that Martin had with him and his family made it possible for her to see Jews as human beings worthy of protection.


At a very young age, she was sent out to work as a servant in other families, and she made very good connections to children and I think to the people she worked for and she received a lot of love and care from these children back in return for her love.


That was a very important healing experience on her part. So all of these things, I think, contributed to the kind of person she became and her openness and readiness to be altruistic.


Irvin felt that his personal experience has provided a roadmap to combat hatred. He started to think about how to inoculate people against hate speech and intolerance. He traveled the world sharing his ideas at academic conferences, he became a renowned expert on the causes of genocide.


You know, when this process begins, when a society begins to harm some group and devalues it more and justifies it and then creates institutions, and there is this evolution. The only thing that can stop it is actually bystanders, people who are witnesses who see what is happening and who feel a responsibility and who begin to take action against it. And unfortunately, much of the time on a whole scale, this doesn't happen. But there are wonderful instances when it does and there are many examples of even single individuals doing things that changes the course of our society.


Fifty years after March saved Ervin's life, he began hearing about an unfolding disaster in the East African country of Rwanda, a radio station was broadcasting urgent messages to the population of seven million. Very few recordings of these broadcasts exist today.


Here's one more thing that Rwanda belongs to those who truly defend it.


And you, the cockroaches are not Rwandans. The cockroaches will not escape.


But let us rejoice, my friends. The cockroaches were exterminated. God is never unfair, just as the Nazis portrayed Jews as subhuman. The Rwandan government, dominated by the Hutu group, dehumanized the Tutsi minority, their weapon of choice radio or as some call it, hate radio. The broadcasts had a real effect. One Harvard study calculated that hate radio convinced an additional 50000 people to murder their neighbors.


Human rights expert Samantha Power described the scene this way. Killers often carried a machete in one hand and a transistor radio and the other. I was 29. I had to move by night, you know, freezing through the bushes and whatever, this is Andre Sagara. During the genocide, Andre lived in Kigali, Rwanda's capital city. He talked to us on Skype from Rwanda. He told me armed men came to his house and dragged everyone outside during dinner.


Say they remember they took us outside holding our hands up. I don't know why they couldn't. We had closed the doors and the curtains they put on Andre fully expected. Be killed. I don't know what to prevent them from getting us possibly with having traditional weapons and whatever happened, I was not killed.


I asked Andre how many people came to his house with machetes. He had a hard time answering.


I couldn't even look at them straight in the eyes. They were so terrible. It's like they didn't want anyone to identify them. So do you think lay down on this one? Yeah, it was a hard moment.


Upheaval in the African state of Rwanda. Just over the streets of Rwanda today. The Red Cross puts the death toll in the tens of almost a half million. Tutsis and moderate Hutus have been massacred by bands of drunk youngsters carrying machetes as sold. Is it genocide? And what is being done to stop the killing? I do not want to remember about this by the time the Rwandan Patriotic Front defeated the Hutu government a few months later, the country was in ruins.


As many as a million people had been murdered.


The majority of the Tutsi population was dead. Many of their killers were roaming free. And now the nation had to rebuild. How can a country come back from such devastation? Would it ever be possible to rebuild trust? For urban Staab, it all seemed eerily familiar. A genocide had unfolded, and yet again, the world had sat on its hands and done nothing. I remember seeing pictures of bodies of people killed floating down rivers, and I do remember being very upset that nobody was doing anything, the community of nations wasn't doing anything, that the United States was stepping aside.


Many countries weren't just stepping aside. They were actively turning a blind eye in Rwanda when the genocide began. Many countries sent in military missions to take their own nationals out. The evacuation of American citizens is proceeding smoothly. French troops have entered the capital to evacuate French nationals. Belgian troops are reported to be on. Some 300 U.S. Marines are standing by in Burundi to help with evacuations if needed.


They flew them out and in a sense, communicated to the perpetrators that we are not involved.


You are free to do whatever you do or if we completely exterminate the cockroaches, nobody in the world will judge us.


Ervin had been speaking at conferences around the world about the causes of genocide, the trauma faced by survivors and how to work toward reconciliation.


But the news from Rwanda told him it was time to try to put into action the theories he had spent decades developing. Simply giving speeches was not enough. Ervin felt he had to act. He and his partner, trauma specialist Laurie Perlman, got on a plane and went to Rwanda. There was a real risk that violence could flare up again. We definitely clearly went with the intention of creating a program that tries to help the Thais to promote healing, try to promote reconciliation so that people live better lives and tries to prevent future violence, preventing future violence.


It was something that Alphonse Bekesi was thinking about as well. He was director of Rwanda's conflict management department. Like every other Rwandan, Alphonse had himself been affected by the genocide. Now, even as he came to terms with his own suffering. He was given the task of trying to heal the wounds of his people. I spoke to Alfonz recently on a scratchy phone line to Kigali.


That is a kind of dilemma. I have the obligation to connect my people. And on the other side, I was working with the affected people. So you are affected and you are asked to help the people.


So you're affected, but you also have to simultaneously help the people who are affected, other people who are affected.


That is why I'm saying about Davidman.


As you battle this dilemma, Alfonz dug deep into his past back to happier days before the genocide.


He went back to his time in college, in high school, and he remembered one thing that he had loved as a student, the theater of all.


In my second school, I used to play some drama. I was in it. I was one of the best in the world to act in my team.


It was clear that radio could convince people to be violent. Rwandan officials Irvan and a production team led by a Dutch NGO radio lab in Valencia, wanted to prove that radio could also bring people together. The idea they came up with a radio soap opera.


No kind of soap opera is embedded in our culture.


Our local government subsidy of the Rwandan officials had successfully used an educational drama to teach people how to practice safe sex. Alfonz Irvan and the production team thought that a radio drama could teach ordinary citizens how to spot and then reverse the early stages of the continuum of destruction. Ervin had about a dozen messages he wanted to sprinkle throughout the show, all were derived from nearly 50 years of research and reflected his own experiences during the Holocaust. We're going to look at three of those messages.


First, violence evolves slowly. Genocidal leaders don't always start out planning to commit genocide at the beginning.


They are not so committed to the vision that we are going to kill these people is not there. That evolves part of this evolution.


Point number two, bystanders matter in conditions that lead to great violence. Bystanders have to act early because the later it is, the more leaders and the society gets committed to turning against and harming these people.


Number three, when people form close personal relationships with those from other groups, this provides a barrier to the spread of prejudice when two people from unfriendly groups marry one another.


This can reduce hostility between the groups or even wanted to convey this very simple message, the hope that intermarriage will be a positive thing.


The production team assembled a group of writers to develop the right narrative. The brainstorming session spent hours, days, weeks, hours and hours and hours looking over the heels of Kigali developing this original radio program in 2004, one decade after genocide had devastated the country.


The program made his debut. It was called Hussein.


When we come back, we'll hear about the Rwandan love story that captivated a divided country. The question was, would it work? This message comes from NPR sponsor Verbal Summer is here and vacation is just a drive away search. Thousands of nearby vacation rentals on Verber to find your family, a private home all to yourselves, where you can spread out chillout and feel that vacation feeling again together. Book the home that makes the vacation. Download the Vershbow app.


That's Vario. I'm Shankar Vedantam and this is say. Just kidding, this is head and Brain, the radio soap opera music awaya, which means New Dawn was making its debut. The show follows two fictional villages, McMorrow and Bermondsey, with a back story that inevitably leads to conflict.


Here's producer George Weiss, who led the NGO radio lab in Valencia that launched the program.


We located these two places on to his opposite one another, and in the middle there's a field which is fertile and through some historic injustice, was given to the second village, Bermondsey.


And then a little catastrophe happens, a bridge collapses. Somebody gets killed and people start feeling very insecure. This is in parallel to Irving stops, what he calls difficult life conditions. Ervin Staub knew from his own experience during the Holocaust that difficult life conditions provide fertile soil for hatred to grow. The hope was in the fictitious conflict between the McMorrow and the Bermondsey Hutus, and Tutsis in the audience would recognize their own story, and they might learn three concrete ways to move past their divisions.


As a Rwandan writers and producers created the drama, one member of the team was Andre Sadara.


Yes, that's the same Andre who survived the genocide, who didn't know why the men with machetes didn't kill him, who didn't want to be reminded of that traumatic moment today. Andre is the director of Music Awaya.


Well, the show, to some extent it opened my mind and yeah, now I'm different from the guy I was genocide.


And even before Andre and the other Rwandan writers try to weave psychological messages into their narrative, violence evolves slowly. Bystanders matter. Intermarriage can reduce conflict. I them anyway.


But meetings that YUEYA since 2004, there have been more than 700 episodes, each one about 20 minutes long.


At a story workshop at the beginning of each season, the writers decide how the plot is going to evolve, all while weaving in the messages approved by the academic team they are working with.


Rwandan society has worked hard over the past 25 years to try and erase the divisions between Hutu and Tutsi to ensure that tribal rivalries never again put lives in danger here. I'm speaking with show writer Charles Wauconda. Can I ask you, I don't know if this is appropriate to ask. You are not.


So forgive me if it's not appropriate, but were you from the Hutu community or the Tutsi community and one on one, then you need one.


It's very difficult. In Rwanda, it's frowned upon to discuss the Hutu and Tutsi past. In some cases, you can even be jailed under a law prohibiting something called division ism.


The official position of the Rwandan government is that there is no ethnicity there.


Everyone is Rwandan and the soap opera. As hostilities flared between the communities on two opposing hills, the writers needed characters for listeners to identify with. So on those two hilltops, both alike in dignity, they created a pair of star crossed lovers, Shamo and Butta.


Marisa Theno uses them very sick of it.


The people are very interested in love. So by telling them it is a love story, they are easily connected and it's through this story. They learn that above the differences, they can find something to unite them.


Yeah, Andre explains that Music Way is a Romeo and Juliet type story where young lovers have to battle the animosity their families feel toward each other.


Just like Shakespeare's Montagues and Capulets, the romance causes all kinds of conflict between the two hills angels.


The show was a runaway success in Rwanda. Nearly everyone listens to the radio, and researchers have estimated that most of the population was listening to music.


Aware anyone associated with the show became a big star, and it seemed like the messages were getting through, at least anecdotally. One of the show's villains is a man named Ruediger. He's wary of the other side. He thinks they are stealing crops, keeping his village down. Zwiefka adequately funded studies use the name Rueter.


Canara became used in casual conversation when someone was acting like a jerk. Here's producer George Weiss. Well, we heard people describe conflict situations by using the names of our characters, you know.


Oh, you don't be rude to Guarnieri. It seemed like the Rwandans were getting the message. But were they really how could the show creators know for sure? Enter social scientist Betsy Palek, who is now a professor of psychology at Princeton University.


I was sitting in New Haven at Yale University and I found a report about this radio soap opera.


At the time, Betsy was a graduate student trying to figure out a topic for her Ph.D. field research. She reached out to the show's creators. They agreed to work with her to measure whether the show was changing people's beliefs and making them more tolerant toward each other. Betsy wanted to do something very ambitious, conduct a controlled study in a country that had just been through an incredibly brutal civil war.


Remember, the creators of the show wanted to convince Rwandans about three things. Violence of all. Slowly, bystanders matter. Intermarriage reduces conflict. But what the messages is getting through were Rwandans adopting these new beliefs. Betsy wanted to measure the changes and she wanted to know whether ordinary people were treating their fellow citizens differently.


We ran it like a medical trial in which we assigned certain communities to listen to this reconciliation, soap opera and other communities to listen to a different soap opera that was about a different topic, specifically HIV AIDS and women's health.


So once a month for an entire year, the Music Away, a group gathered around a portable stereo and listened to the women, and they listened as Batta Maurice's father died and SheBar came to pay his respects with Senator Santorum.


They listened as bad memories of fell in love with a forbidden Sheema to, quote, gone to Cuba hadn't the rock.


They listened as heavy rain destroyed a bridge between the hilltops as Ruediger Nera son died from malnutrition.


And he blamed the other village for the death as Ruediger Nero ran for office and plan to invade the other village.


As all this happened, people listened. And as is often the case in Rwandan society, they listened together in groups.


They weren't just hearing the story on their own. They were seeing the reactions on the faces of their friends and neighbors. They worked together.


They laughed together. They shouted out encouragement when Bhatta Morissa was dejected.


Johan Gunshop meaning hold on, dear.


After one year, Betsy and her team interviewed the volunteers and measured their beliefs. Had they learned the lessons, had their attitudes toward other Rwandans changed? Betsy asked them about Earvin's three ideas that the Rwandan writers were trying to instill. No. One, genocide doesn't happen. Suddenly, the radio program taught that violence accumulates slowly. It doesn't happen all at once.


I saw this in every case. I was progressive evolves. People get disvalue.


There was just one problem. The listeners in the study, they disagreed. We had a number of people who were in our study who said to us at the end, you know, I don't I don't think that's true. The way the genocide happened for me, it came like a sudden rain.


Lesson number two bystanders matter. It was one of Earvin's most important guiding principles, the thing he had learned from much, the woman who had saved him during the Holocaust.


When a society begins to harm some group, the only thing that can stop it is actually bystanders. But here, too, the idea that bystanders can make a difference didn't seem to be getting through to listeners. When asked whether bystanders who remained silent bear some responsibility for the evil actions of others, there was no difference between those who would listen to the soap opera and the control group who hadn't.


People essentially did not think that bystanders could make any difference.


And what about lesson number three? Intermarriage can reduce hostility. That didn't work either. People told Betsi, I don't really believe that.


Ethnic intermarriage will bring peace. I just lived through a genocide where I watched Hutu men kill their Tutsi wives and children. So, you know, I don't personally buy that on all three counts.


The soap opera hadn't changed people's beliefs as entertainment. The show was a hit, but as an experiment designed to change hearts and minds move to traumatized people toward reconciliation. The show was a failure, music awaya was nothing more than a fun soap opera. Or was it there was one dimension where Betsi found the soap opera did make a positive difference, a big difference, and this dimension was even more important than what people believed. When we come back, why the soap opera was far more successful than it might first appear.


Support for this podcast and the following message come from Kay Bucksbaum in support of the David Gilkey and Zabihullah Tamanna Memorial Fund, established to strengthen NPR's commitment to training and protecting journalists in high risk environments. I'm Shankar Vedantam, and this is OK, fine hidden brain say.


We're talking about the Rwandan radio soap opera that captivated the country with its stories of love and reconciliation after the genocide, that was the good news, the bad news, despite the hopes of the creators, the show didn't change people's beliefs.


But there was one metric much more important than people's own beliefs. Actual behavior, as the writers of the radio drama went out into the world to speak with listeners of the show, they came across people who lived on two hills near Kigali, very similar to the hills portrayed in the show.


Here's director Andrea Sagara, randomly on one here.


The majority of the population, we're Tutsi and the other here, the majority, we're Hutus.


If the soap opera was a reflection of real life, this was a reflection of the soap opera.


The Hutu and Tutsi inhabitants on the two hills that Andre visited were just like them tomorrow and the Bermondsey during the genocide, one group had tried to kill the other.


They want to hear genocide. They want to kill people on the other side. And they wanted properties and a lot of that and the genocide during the transitional justice process that he was right.


He's talking about the Gacaca, a series of community courts held in the years following the genocide.


It put about one million people on trial.


There's debate about the specific numbers, but the vast majority of those tried were found guilty with crimes ranging from vandalism to murder, the crime.


It was not to be reported between these two, but there was one listener of music. You were on one here and you went to find his footage from the other here. They sat together.


They they shared a beer and they said, you know, this should not continue this way. And they decided to reunite here and they succeeded.


Life was imitating art, music. Awaya had characters playing the role of active bystanders, peacemakers. Now, that was happening in the real hills outside Kigali. Even though music listeners told Betsie Pollock's research team that bystanders couldn't make a difference, bystanders were stepping up to prevent violence.


They united and they were inspired by what they heard from the Oklahoma City, where we are so proud and yeah, we are happy.


You know that we are playing a significant role in the reconciliation in Rwanda.


And it was more than just anecdotal. Betsey's data found that even though Listeners' beliefs didn't change, their behavior did take the question of intermarriage.


For instance, music where listeners told Betsey's team that they didn't think intermarriage would lead to peace. But that's not all they said.


They said, however, I do think that now we should allow our children to intermarry. I think that this is the thing that Rwandans are doing. We all think it's a good thing moving forward. This is a good example of a distinction between what you personally believe, but what you perceive to be a growing trend.


What's fascinating here is that you are finding that the message is, in fact, not changing their own personal opinions, but it's still changing their behavior.


That's right. I think if you reflect on your own behavior, it's hard to find a time when, as you were deciding on what to do, you didn't consider someone else or you didn't consider the reaction that your behavior might draw from someone else.


When it comes to changing how people behave, it turns out there is a much more powerful driver than people's own beliefs. People don't always do what they believe, but they usually do what they think everyone else believes. We are such social people, if we think that our behavior is going to be really going in the other lane, in the other direction, from what people who matter to us from what they are doing, that really restrains our behavior. So we might think one thing, but eventually do another, not because we're lemmings, but because we're all trying to kind of move in the same direction with the flock.


And if we violate those norms, if we behave in ways that disappoint members of our community, we fear that. And so even if we believe something different, our behavior will conform to the social norm.


In essence, Betsey's research demonstrated that even after just one year the show was working, even if it didn't change people's beliefs, it was changing social norms, what people thought was expected of them. The same thing happens in other contexts. Take, for instance, same sex marriage in the United States.


Hundreds of people were in front of the U.S. Supreme Court this morning waiting.


In 2015, the Supreme Court ruled that the U.S. Constitution guarantees the right to marry as a fundamental liberty for both straight and gay couples.


An historic victory for gay rights today.


The Supreme Betsi followed ordinary Americans at the time to see if the court decision changed their own views. Again, people's personal beliefs didn't change, but their behavior did.


What moved everyone in the same direction was this perception of whether other Americans support same sex marriage and whether it would become more accepted in the future. The Supreme Court ruling, in effect, told people the United States now believes same sex marriage is OK. You could still think otherwise, but if you acted in ways that showed you didn't agree with the consensus, you risked being left behind. Even worse, you risked becoming an outcast, and you may remember that time where people's Facebook walls exploded in rainbows.


Once the social norm about gay marriage changed, it emboldened supporters and it prompted many dissenters to shrug their shoulders and accept the new normal. The same principle works in all sorts of places, take bullying, for example, Betsy has found that norms play a powerful role in encouraging bullying and discouraging it.


I've been studying bullying and conflict as it plays out in American public schools. And what kept hitting me was that at some point, certain types of conflict and prejudice become normal to the people who are living there.


The central inside of this research is that people go along with the flow rather than their own beliefs. Betsy found the same thing in Rwanda. People who listen to music aware began supporting intermarriage, even if they didn't personally think that intermarriage was a good thing.


It all comes back to this idea that what it means to be human is to belong socially to a group. And so we're all trying to figure out the rules of those groups.


Betsi, realize that one unintended way the soap opera had a big effect was that people had listened together.


They thought they were just listening to the show, but they were also taking in the reactions of friends and neighbors when other people expressed dismay as rotogravure, got in the way of the star crossed lovers.


That sent a message to my fellow Rwandans don't like people like rooted in era. After the year of testing was over, Betsey's team gave each group a portable stereo and 14 cassette tapes of the radio program. It was ostensibly a reward for volunteering, but it was actually part of the experiment, too. After presenting the stereo, a research assistant suggested that the group could decide how best to share it in the communities that had been listening to this reconciliation radio program.


It was a little bit counterintuitive at first, but they fought more over their common resources that we gave them. And the reason why that was exciting to us is that one of the messages of this radio program was you should dissent against authority. You should make your voice heard in the communities that had not been listening in a dedicated way to these reconciliation soap operas. Basically, one person proposed. We give it to the local authority.


They will decide for us. Everyone said good and moved on.


Among the music awaya group, the discussion was much more lively.


Usually someone would would make the same proposal. This is what is customary to do in Rwandan communities. But then someone would raise their hand and say, I don't know. The local authority hasn't been coming to listen to all these shows with us.


Why should we sign it over to him? And then maybe someone else would raise their hand and say, I think we should give it to a woman. They are way more responsible than men. And there would be a healthy debate about that. And and then people would decide on what to do. So I went back and I said, look, we have caused a healthy debate. This is something to celebrate. When I spoke to the Rwandan leader, Alphonse Bucksey, recently, it was close to the anniversary of the 1994 genocide.


He told me he was incredibly proud of all the Rwandans had accomplished in the intervening quarter century. Music Awaya, along with many other interventions, had made a difference. Ervin's talibe accomplished what few scholars ever do. He got to see his ideas put into action more important, he got to see his ideas make a difference. If there's a continuum of destruction or even how to show there is also a continuum of benevolence. People can learn tolerance by watching what others do, even fictional characters living on Make-Believe Hilltops.


Urban told me he admires Betsy Palek study, but he disagrees with some of her conclusions.


Betsy found that people's behavior changed not because their beliefs evolved, but because that perceptions of social norms did.


But even things it isn't possible to easily separate personal beliefs from one's perception of social norms.


Let me just say there is no argument about the findings, the results. The only difference between her and me is the interpretation of the results. The results are clear. They are there and they are meaningful and significant.


One point Ervin makes is that Betsey's study was conducted during the first year of the show. By the end of that year, there were many unresolved issues in the narrative of things that if the study had been conducted later, for example, after the villain Ritika Niira experiences a change of heart, the study might have picked up changes in people's attitudes, not just their behavior.


Now you might argue that the academics are splitting hairs. I asked Tovan about that. I'm going to play you an extended excerpt from our exchange because it leads up to something really important.


As I said, I think the theoretical differences about why the behavior changed are less important than the fact that behavior actually change in the direction that was intended. And as you point out, this evaluation was done after one year of a program that lasted now 14 years. And those points are very well made.


But do you think actually it's important whether the difference comes from norms or beliefs or values, or is it actually just more important that people's behavior changed? And who cares what the actual mechanism was?


Well, I think that for this in our case, after one year, what's really important is that behavior changed and some thinking has changed. But that is one reason why it is so important what leads to change, and that is when a society moves towards violence. What we hope is that people understand and can foresee what's going to happen. That was one reason we talked to them about the origins of violence. Now things evolve slowly, and at each point a person can say, well, it's just one little thing.


I'm not doing anything. And then then the next point, the same thing. But if you can't foresee where this is going to lead, you are more likely to get involved early right now if your views depend on social norms as a society begins to move towards violence, the social norm is that you move together with everybody else towards violence. But if you personally believe that, you should take action.


Then you are more likely to go contrary to the direction of your group, Irvan wants to believe that the values of ordinary Rwandans changed because he wants to believe that the transformation in Rwanda is here to stay, that if hate radio were to start broadcasting again, ordinary Rwandans would stand up to it because they now have different values. But if Betsi is right, this means that Rwandans began acting in a more tolerant fashion, in large part because tolerance became the new social norm.


This raises a troubling question. If social norms can change in a matter of months from hate to tolerance, can they go back just as easily in the other direction? Betsey's study provides an important lesson and not just for people in Rwanda. The currents that govern human behavior are fickle. If you want to make change and then preserve it, you need to be eternally vigilant. According to several years of will they or won't they drama, Chamar and Butta, Marisa finally get married.


Rwandans got so excited about the wedding, about the forbidden love between these two villagers that they wanted to witness an actual wedding.


They demanded that the producers of the radio show hold a wedding in the national stadium so that the whole country could show up to watch. Here's the director, Andre Messaggero. We told them Schimmer and what will take place at the National Stadium because they have many friends.


So if you want to take part in the wedding, this is the way you are going to do it.


You dress very, very well and you go to someone you are in conflict with and you reconcile and that you have participated in Qimonda. But the wedding and the day after we receive feedback telling us people reconciled because of that announcement was made about the diamond wedding.


All right.


So we've been playing the music away, a theme song this whole hour.


Here's what it means. Dear friends, peace is a plan that is transplanted and maintained by people together.


It is the fruit of love for your neighbor. Be the first to maintain them. Where there's hatred, they do not grow. Where these love, they grow and flourish.


For Andre Must O'Gara and the other creators of the show, the goal is to keep that message going as long as the audience is interested in music.


Awaya is now in its 16th year and shows no signs of stopping. It's a soap opera.


The twists are endless. Easy, right? The Today Show was produced by Matthew Schwartz and edited by Tara Boyer, our team includes Jennifer Schmidt, Raina Cohen, Patricia, Laura, Querelle, Thomas Lou and Catch Up Knecht Jackson.


Whanganui did our voiceovers and translations special thanks to Radiolab and Valencia, the Dutch NGO that spearheaded the creation of music awaya and got us in touch with the writers of the show and Rwandan leaders, our unsung heroes. This week, our Natasha Branch and Alex Stravinsky's from NPR's audio engineering team. Natasha and Alex pitched in when we were having some challenges with our audio for this week's show.


They helped us troubleshoot the problems and did so with calm and good cheer. Thank you so much for the help. Natasha and Alex. You can find more hidden brain on Facebook and Twitter.


If you like this episode, please be sure to share it with a friend. I'm Shankar Vedantam and this is NPR. Whenever you face a choice, it helps to think like an economist. And this week on Planet Money, Summer School will start off our course in economics with a workout for your brain, how to decide what something truly costs. Listen now to Planet Money from NPR.