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.

Sometimes when we believe something, we resist data that can change our minds. This week, we look at how we rely on the people we trust to shape what we believe, and why emotions can be more powerful than facts. This episode features new reporting and favorite conversations with neuroscientist Tali Sharot and philosopher of science Cailin O'Connor.

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."

Have you ever noticed that when something important is missing in your life, your brain can only seem to focus on that missing thing? On this week's Radio Replay, we bring you a March 2017 story about the phenomenon of scarcity, and how it can blind us to the big picture. Then, we go to the opposite end of the spectrum to look at the perils of excess. We'll bring you an October 2016 conversation with Brooke Harrington, a sociologist who wanted to know what it's like to be one of the richest people on the planet. For more on these topics, visit us at https://n.pr/2O8DkdV.

We all know the downsides of being poor. But what about the downsides of being rich? This week, we explore the psychology of scarcity...and excess.

Have you ever noticed that when something important is missing in your life, your brain can only seem to focus on that missing thing? Two researchers have dubbed this phenomenon "scarcity."

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.

Dozens of houses have exploded into flames, and a hospital says it is treating victims. People are being told to evacuate, which has led to gridlock and traffic jams.

Violent crimes committed by Muslims are much more likely to be reported as "terrorism." And that has disturbing consequences for the way Muslims are perceived.