Making jokes about politics is a tradition as old as America itself. These days, of course, comedians have a new target: President Donald Trump. We talk with Iranian-American comedian Maz Jobrani about finding humor in the midst of deep political divides, and how he uses an understanding of human nature to craft a successful punchline.

What would drive someone to take another person's life? When researchers at the University of Chicago asked that question, the answer was a laundry list of slights: a stolen jacket, or a carelessly lobbed insult. It made them wonder whether crime rates could be driven down by teaching young men to pause, take a deep breath, and think before they act. We'll go inside a program that teaches Chicago teens to do just that, and explore the research on whether this approach actually works.

We all know casual sex isn't about love. But what if it's not even about lust? Sociologist Lisa Wade believes the pervasive hookup culture on campuses today is different from that faced by previous generations. This week on Hidden Brain, we explore what this culture means for those who choose to participate, and for those who opt out.

A recent paper found that black patients receive less pain medication for broken bones and cancer. Black children receive less pain medication than white children for appendicitis. The research is new, but the phenomenon is not. This week, we revisit an episode from our archive that looked at the intersection of race, pain, and medicine. It might not be suitable for young children.

Barely a week after assuming office, President Donald Trump set off a worldwide firestorm when he decided to temporarily ban entry to migrants from seven Muslim-majority countries and refugees from all over the world. In response, many people are looking to the past, to see what history can teach us. But this process can fraught with psychological peril. On today's Hidden Brain, we revisit a specific incident from World War II – the American decision to refuse entry to Jewish refugees aboard the SS St. Louis – and explore how it speaks to the current mood in the United States.

In the months since the presidential election, many have noted that lots of Americans live in bubbles — echo chambers filled with the voices of people who mostly agree with us. Sociologist Arlie Hochschild felt this long before the rise of Donald Trump, and five years ago she went on a mission to understand the other side. She left her own liberal bubble in Berkeley, California for a conservative one, deep in the Louisiana bayou.

It's inauguration season, which means balls, parades, and celebrations. We may love the pomp and circumstance, but there's another, darker side to our psychology, too. Whether we like the new president or not, human beings have a strange and contradictory relationship with power and celebrity. We idolize the rich and famous, but also enjoy seeing them fall from their pedestals. This week on Hidden Brain, we explore this paradox: from Hollywood, to the White House, to the forests of Tanzania.

Young people have always used language in new and different ways, and it has pretty much always driven older people crazy. But the linguist John McWhorter says all the "likes" and LOLs are part of a natural – and inevitable –evolution of language. This week on Hidden Brain, why language can't "sit still."

At one time or another, many of us feel stuck: in the wrong job, the wrong relationship, the wrong city – the wrong life. Psychologists and self-help gurus have all kinds of advice for us when we feel rudderless. This week on Hidden Brain, we explore a new idea, from an unlikely source: Silicon Valley.

Maya Shankar was well on her way to an extraordinary career as a violinist when an injury closed that door. This week, we look at how she wound up at the top of another field: the social sciences.

There is a replication "crisis" in psychology: many findings simply do not replicate. Some critics take this as an indictment of the entire field — perhaps the best journals are only interested in publishing the "sexiest" findings, or universities are pressuring their faculty to publish more. But this week on Hidden Brain, we take a closer look at the so-called crisis. While there certainly have been cases of bad science, and even fraudulent data, there are also lots of other reasons why perfectly good studies might not replicate. We'll look at a seminal study about stereotypes, Asian women, and math tests.

Look down at what you're wearing. You picked out that blue shirt, right? And those boots — you decided on those because they're warm, didn't you? Well, maybe not. Researcher Jonah Berger says, we tend to be pretty good at recognizing how influences like product placement and peer pressure affect other people's choices... but we're not so good at recognizing those forces in our own decision-making.

It sounds like the plot of a movie: police discover the body of a young man who's been murdered. The body tests positive for a deadly infectious disease. Authorities trace the killing to a gang. They race to find gang members linked to the murder... who may also be incubating the virus. This week on Hidden Brain... disease, panic, and how a public health team used psychology to confront an epidemic.

Many of us spend lots of time and energy trying to get organized. We KonMari our closets, we strive for inbox zero, we tell our kids to clean their rooms, and our politicians to clean up Washington. But Economist Tim Harford says, maybe we should embrace the chaos. His new book is Messy: The Power of Disorder to Transform Our Lives.

It happens to all of us: someone recognizes you on the street, calls you by name, and says hello... and you have no idea who that person is. Researchers say this struggle to read other faces is common. This week on Hidden Brain, super-recognizers, and the rest of us.

On the morning after election day, pundits, pollsters, politicians, and citizens woke up feeling stunned. All signs, all year, had been pointing towards a victory for Democrat Hillary Clinton. So, what happened? We ask one of the few people who didn't get it wrong: the historian Allan Lichtman.

We didn't hear very much about climate change during this election cycle — and social science research might give us some insight as to why not. This week, an encore of one of our favorite episodes about why it's so hard for us to wrap our heads around climate change.

In the early 1980s, a couple of researchers wrote an article in The Atlantic that would have far reaching consequences. The article introduced a new idea about crime and policing. It was called Broken Windows. The idea was simple: A broken window is a sign of a neglected community, and a neglected community is a place where crime can thrive. The researchers said, if police fixed the small problems that created visible signs of disorder, the big ones would disappear. Today, we explore how ideas sometimes get away from those who invented them.. And then are taken to places that were never intended.

Several years ago, sociologist Brooke Harrington decided to explore the secret lives of billionaires. What she found, she said, shocked her.

A century after women won the vote in the US, we still see very few of them in leadership roles. Researchers say women are trapped in a catch-22 known as "the double bind." Note: an early version of this episode incorrectly stated that Carol Moseley Braun was the first African-American U.S. Senator. She was in fact the first female African-American Senator.

Our airwaves are filled with debates about migrants, refugees, and undocumented immigrants... Who should be in the United States, who shouldn't, and who should decide? Immigration is, without question, a flash point in this year's political debates. It's an issue that seems to get to the core of who we are, who we want to be, and where we're headed as a nation. Today we're going to take a fresh look at the issue by exploring what history can teach us about the patterns and paradoxes of immigration in a nation of immigrants. It's one of a series of shows in the next few weeks that will speak to issues that have bubbled to the surface in politics this year, that reveal something about us — and human nature. Historian Maria Cristina Garcia joins us.

We have lots of ways to describe the good that can come from bad: a blessing in disguise, a silver lining — but what if the bad thing was truly awful? This week on Hidden Brain, framing and re-framing a tragedy.

This week on Hidden Brain, coincidences. Why they're not quite as magical as they seem... and the reasons we can't help but search for meaning in them anyway.

A few months ago, Hidden Brain investigated claims that Airbnb users were facing discrimination on the platform. Now, we bring you an update on the company's response.

In the midst of a rancorous election, we present a new theory to explain why the two sides of the aisle seem irreconcilable sometimes.

We've all heard the old adage that "power tends to corrupt, and absolute power corrupts absolutely," but psychologist Dacher Keltner at UC Berkeley has found evidence to prove it. His book is The Power Paradox: How We Gain and Lose Influence.

Derek Amato wasn't born a musical savant. He became one—almost instantly—after hitting his head on the bottom of a swimming pool.

This week, Harvard researcher Dan Gilbert tells us why we're bad at predicting our future happiness, how that affects our decision making, and why we are actually happier after making a decision that feels irrevocable.

This week on Hidden Brain, we explore real and fake, from fine art to fine wine. Shankar speaks with Noah Charney, author of The Art of Forgery, about why art forgers are compelled to spend their lives copying the great masters, and why so many of them want to get caught. Also this week: why we love studies that prove wine connoisseurs wrong.

While everyone is focused on the Olympic winners in Rio, we're zooming in on loss. We have the story of how a world-champion judo player reacted to a devastating defeat, plus a Stopwatch Science on how losing affects us all.

The rush of victory or crush of defeat in the Olympics can flash by very quickly. But if you slow those moments down, there's a lot to learn about human behavior.

Jesse always wanted to fall in love. So when the perfect woman started writing him letters, it seemed too good to be true. Because it was. This week, a story about a con — with a twist. When the con was exposed, its victims defended the con artists. They still wanted to believe the lie

Summer vacations often take time, energy and money to plan. Expectations can run unreasonably high. This week in Stopwatch Science, we dive into what research says about how to have a better getaway.

It doesn't take a psychologist to see narcissism in our culture of selfies. But we decided to talk to one anyway. Jean Twenge is a researcher and author of the books The Narcissism Epidemic, and Generation Me.

Six months ago, Hidden Brain's Max Nesterak made a resolution to quit smoking. But as we all know... resolutions are made to be broken. This week, we check in with Max to find out how he's fared, and give you social science insight to help you quit your bad habits too.

This week on Hidden Brain, we find out what makes humans of all ages cheat. Plus in Stopwatch Science, Dan Pink comes armed with studies on how our social context influences our cheating habits.

This week, Hidden Brain considers the power of touch. First, Alison MacAdam tells us the story of her security blanket, called Baba. Then, Shankar interviews writer Deborah Blum about groundbreaking experiments into the importance of affection for young children.

In the wake of the mass shooting in Orlando, we explore how groups such as the Islamic State explicitly try to capitalize on the grievances and individual frustrations of potential "recruits."

This week on Hidden Brain, Shankar talks to Google's Laszlo Bock for insider tips and insights about what works — and what doesn't work — in recruiting, motivating, and retaining a talented workforce.

What do large tables, large breakfasts, and large servers have in common? They all affect how much you eat. This week on Hidden Brain, we look at the hidden forces that drive our diets.

Lots of psychology studies fail to produce the same results when they are repeated. How do scientists know what's true?

Uber is built on the scourge of surge. When demand is high, the company charges two, three, even NINE-POINT-NINE times as much as normal for a ride. Riders hate it . . . but not so much that they stop riding. Yep, "dynamic pricing" has helped the company to grow into one of the largest taxi services in the world. What's the psychology behind it? Shankar sits down with Uber's Head of Economic Research Keith Chen to talk about when we're most likely pay for surge, when we hate it the most, and why monkeys would probably act and feel the same way. That's right. Monkeys.

Many of us have heard that we should think positive... Visualize ourselves achieving our goals. But researcher Gabriele Oettingen finds, this isn't actually the best advice. Instead, we should use her strategy — which she calls WOOP.

Traffic. You hate it, we hate it, the rest of the world hates it, and unfortunately, our best efforts to curb it usually only make it worse. This week on Hidden Brain, we visit a few of the world's most congested cities, and investigate a few options to make driving safer and less maddening.

The sharing economy is great. It gives us opportunities to connect with strangers... to pool resources... to get a cheap ride, or a weekend away. But this week on Hidden Brain, we'll look at how these new platforms can amplify some old biases.

Human beings would be better at fighting climate change if we weren't so, well, human. In this episode, we explore the psychological barriers to addressing climate change.

From eating marshmallows to spending lottery winnings, Shankar Vedantam talks with behavioral economist Richard Thaler about Misbehaving.

Grit is a quality that parents strive to teach to their children, and teachers strive to teach their students. This week on Hidden Brain, we explore grit, and ask, does it also have a downside?