How to Change the World

We like to think that good financial decisions come down to discipline and basic math. But the psychology of money turns out to be deeply complicated. Researcher John Dinsmore explains the hidden mental biases that shape how we think about spending, borrowing, and the future. We explore how these forces can steer us toward costly mistakes — and how to guard against them. Then, on Your Questions Answered, researcher Bobby Parmar returns to consider the upsides of embracing uncertainty.

Should you tell a harsh truth if it will only cause pain? Or is it sometimes kinder to keep someone in the dark? Psychologist Emma Levine explores the unwritten rules that guide when people feel it’s acceptable to lie — and what those choices reveal about trust, harm, and our deepest moral values.

How do the groups you identify with shape your sense of self? Do they influence the beer you buy? The way you vote? In this favorite episode from 2021, psychologist Jay Van Bavel explains how our group loyalties affect us more than we realize, and can even shape our basic senses of sight, taste and smell. Then, look out! There's a g-g-g-ghost! Psychologist Coltan Scrivner answers listener questions about the surprising benefits of scary entertainment.

We tend to see depression as an illness to eliminate, evidence that something has gone wrong in the brain. But what if low mood serves a purpose? Psychologist Jonathan Rottenberg examines the evolutionary roots of depression and reflects on his own painful experience with suicidal despair. He explores how depression can narrow our focus, and sometimes open the door to change.

Disgust is a strong emotion, one designed by evolution to protect us from danger and diseases. But disgust also spills into other areas of our lives, influencing our morals, our intuitions about right and wrong, even our politics. We talk with psychologist David Pizarro about how disgust is used to persuade and divide us, and why it remains such a potent force in public life today. Then, in our latest installment of “Your Questions Answered,” Huggy Rao returns to respond to listeners’ thoughts and questions about why big ideas fail.