Maggie Penman

President Trump said this week that a few "bad apples" were to blame for police killings of black people. But research suggests that something more complicated is at play — a force that affects everyone in the culture, not just police officers. In this bonus episode, we revisit our 2017 look at implicit bias and how a culture of racism can infect us all.

We don't always behave the way economic models say we will. We don't save enough for retirement. We give money to charity. This week, why we act in ways that go against our "rational" self-interest.

What happens when we connect with people whose view of the world is very different from our own? In this month's Radio Replay, we bring you stories about the relationship between diversity, conflict, and creativity. This episode features reporting from our July 2018 podcast, "The Edge Effect," and from one of our 2016 shows, "Tribes and Traitors."

Nearly a quarter century ago, a group of women accused a prominent playwright of sexual misconduct. For the most part, the allegations went nowhere. In 2017, in the midst of the #MeToo movement, more women came forward to accuse the same playwright of misconduct. This time, everyone listened. On this episode — originally broadcast in February 2018 — we explore the story through the lens of social science research and ask, "Why Now?" What has changed in our minds and in our culture so that allegations of sexual harassment and assault are being taken more seriously than they were in the past? A note: This story includes descriptions of sexual harassment and assault. It may not be suitable for all listeners.

This week on Hidden Brain's radio show, we tackled a big topic: power. From our conflicted feelings toward the powerful, to the ways we gain and lose power ourselves, and how power really can corrupt.

Unpredictable things happen to us all the time. On this Radio Replay, we mark the new year with two of our favorite stories of loss and the change it brings.

In the last five years, 12 percent of terrorist attacks in the U.S. were carried out by Muslims and more than 50 percent by far right extremists. So why the media focus on "Islamic terrorism"?

Many Americans are increasingly expressing their political beliefs with their wallets. Neeru Paharia explains how we use money to tell stories about ourselves, and to ourselves.

This week on Hidden Brain, the stories of two men who showed empathy for the other side and found themselves labeled "enemy" by their own people.

The tweets come after the AG said he won't take part in probes of links between the campaign and Russian officials. Sessions spoke with the ambassador but testified at a Senate hearing that he hadn't.