Hidden Brain

This week, we look at the science of compassion, and why doing good things for others can make a big difference in your own life.

We dig into the psychology that determines the foods that make us salivate and the scents that make us squirm.

Arguments and bickering can sour family gatherings during the holiday season. This week, we share tips on how to avoid miscommunication from our January 2018 conversation with actor Alan Alda. You might know him from his roles on television shows like MAS*H, The West Wing and 30 Rock, but in recent years Alda has also focused on helping scientists, and the rest of us, communicate better. His book is If I Understood You, Would I Have This Look on My Face? My Adventures in the Art and Science of Relating and Communicating.

When a newspaper shuts down, there are obvious costs to the community it serves: job losses, fewer local stories. But new research suggests there's another consequence that's harder to spot—one that comes with a hefty price tag for residents. This week on Hidden Brain we ask, who bears the cost when nobody wants to pay? For more information about the research in this episode, visit https://n.pr/2zSPraS.

Why do we always fall for surprise endings? It turns out that our capacity to be easily fooled in books and movies is made possible by a handful of predictable mental shortcuts. We talk this week with Vera Tobin, one of the world's first cognitive scientists to study plot twists. She says storytellers have been exploiting narrative twists and turns for millennia — and that studying these sleights of hand can give us a better understanding of the contours of the mind.

"We hold these truths to be self-evident, that all men are created equal." These words, penned by Thomas Jefferson more than 240 years ago, continue to inspire many Americans. And yet they were written by a man who owned hundreds of slaves, and fathered six children by an enslaved woman. This week, we talk with Pulitzer Prize-winning historian Annette Gordon-Reed about the contradictions in Jefferson's life — and how those contradictions might resonate in our own lives.

We try to translate the mysterious language of babies. And we ask, when should we step back and just let our children be?

Gender is one of the first things we notice about the people around us. But where do our ideas about gender come from? Can gender differences be explained by genes and chromosomes, or are they the result of upbringing, culture and the environment? In this encore episode from October 2017, we delve into debates over nature vs. nurture, and meet the first person in the United States to officially reject the labels of both male and female, and be recognized as "non-binary."

There's a core belief embedded in the story of the United States: the American Dream. This week we discuss the state of that dream with economist Raj Chetty.

We're used to the idea that rhetoric sways voters. But what about another element of language: a candidate's voice? This week on Hidden Brain, what happens when our political system and ancient biological rules meet. For more information about the research in this episode, visit https://n.pr/2Pe1Fog.