Why do some companies become household names, while others flame out? How do certain memes go viral? And why do some social movements take off and spread, while others fizzle? Today on the show, we revisit a favorite 2021 conversation with sociologist Damon Centola, who studies social contagion and how it can be harnessed to build a better world.

The Snowball Effect

Shankar Vedantam uses science and storytelling to reveal the unconscious patterns that drive human behavior, shape our choices and direct our relationships.

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If you're a parent or a teacher, you've probably wondered how to balance play and safety for the kids in your care. You don't want to put children in danger, but you also don't want to rob them of the joy of exploration. This week, we talk with psychologist Peter Gray about how this balance has changed — for parents and children alike — and what we can do about it.

Parents: Keep Out!

We've all had those days when all we want is a little treat. Maybe it's a bag of chips, an ice cream sundae or a glass of wine. But sometimes, these desires become all-consuming. This week on the show, psychiatrist Judson Brewer helps us understand the science of cravings, and how we should respond to them.

The Curious Science of Cravings

Anthropologist Tom Pearson was devastated after his daughter Michaela was diagnosed with Down syndrome. When he began to examine that emotional response, he found himself wrestling with questions that have roiled his field for decades. Early anthropologists would often compare people of different backgrounds and abilities, asking questions like: How is one group different from another? Which one is stronger or smarter? And how do we understand people who don’t fit our expectations? This week, we talk with Pearson about his family’s story, and the evolution of our thinking on disability and difference.

What Is Normal?

If you've ever taken an economics class, you were probably taught that people are rational. But about 50 years ago, the psychologists Daniel Kahneman and Amos Tversky began to chip away at this basic assumption. In doing so, they transformed our understanding of human behavior. This week, we remember Kahneman, who recently died at the age of 90, by revisiting our 2018 and 2021 conversations with him.

The Transformative Ideas of Daniel Kahneman

Have you ever sat across from your spouse, colleague or friend and realized that while they may be hearing what you're saying, they aren't actually listening? Poor listening can lead to arguments, hurt feelings, and fractured relationships. But the good news is that active, thoughtful listening can profoundly benefit both people in the conversation. This week on the show, psychologist Guy Itzchakov helps us understand where interactions go awry, and how to become a more attentive listener.

The Snowball Effect

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