Anjan Chatterjee uses tools from evolutionary psychology and cognitive neuroscience to study one of nature's most captivating concepts: beauty. Learn more about the science behind why certain configurations of line, color and form excite us in this fascinating, deep look inside your brain.

Anjan Chatterjee seeks to answer a tantalizing question: Why is beauty so gripping?

Hector A. Garcia has spent his career as a frontline psychologist delivering evidence-based psychotherapies to veterans with posttraumatic stress disorder (PTSD).

TED Studies, created in collaboration with Wiley, are curated video collections — supplemented by rich educational materials — for students, educators and self-guided learners. In Understanding Happiness, expert explorers of the mind chart our understanding of how happiness is created and cultivated. Their insights challenge our most basic cultu...

To get out of the mess we're in, we need a new story that explains the present and guides the future, says author George Monbiot. Drawing on findings from psychology, neuroscience and evolutionary biology, he offers a new vision for society built around our fundamental capacity for altruism and cooperation. This contagiously optimistic talk will...

Sarah Brosnan studies how and why animals make decisions.

Does humanity have a future as uploaded minds? In his work, Robin Hanson asks this and other extra-large questions.

Anger researcher Ryan Martin draws from a career studying what makes people mad to explain some of the cognitive processes behind anger and why a healthy dose of it is, in fact, useful. "Your anger exists in you because it offered your ancestors an evolutionary advantage," he says. "It's a powerful and healthy force in your life."

Paul Bloom explores some of the most puzzling aspects of human nature, including pleasure, religion, and morality.

Anger researcher Ryan Martin draws from a career studying what makes people mad to explain some of the cognitive processes behind anger -- and why a healthy dose of it can actually be useful. "Your anger exists in you ... because it offered your ancestors, both human and nonhuman, an evolutionary advantage," he says. "[It's] a powerful and healt...

Laurie Santos studies primate psychology and monkeynomics -- testing problems in human psychology on primates, who (not so surprisingly) have many of the same predictable irrationalities we do.

The average person experiences dozens of individual itches each day. We've all experienced the annoyance of an inconvenient itch — but have you ever pondered why we itch in the first place? Is there actually an evolutionary purpose to the itch, or is it simply there to annoy us? Emma Bryce digs deep into the skin to find out. [Directed by Sashko...

TED collaborates with animator Andrew Park to illustrate Denis Dutton's provocative theory on beauty -- that art, music and other beautiful things, far from being simply "in the eye of the beholder," are a core part of human nature with deep evolutionary origins.

Robert Wright uses evolutionary biology and game theory to explain why we appreciate the Golden Rule ("Do unto others..."), why we sometimes ignore it and why there’s hope that, in the near future, we might all have the compassion to follow it.

Matters of the heart sometimes feel impossible to parse. But when examined through the eye of an evolutionist, our romantic whims and sexual desires can start to make more sense, and even seem a bit predictable. Biological anthropologist David Puts confronts how we compete, care and copulate based on evolutionary biology -- and what that means f...

This week's comments were posted on Rabbi Sharon Brous' talk, which has sparked quite the conversation. The first poster is Paul Watson, who is exactly the type of community member I'd hoped to highlight when we began this project. Paul's comment is thoughtful, speaking from his particular area of interest/expertise, and looking at the larger...

Love isn’t so much an emotion, says biological anthropologist Helen Fisher, as it is a brain system, one of three that’s related to mating and reproduction. It’s those other two systems that explain why human beings are capable of infidelity even as we so highly value love. Here Fisher explains more about cheating -- why it occurs, how common it...

On any given day we're lied to from 10 to 200 times, and the clues to detect those lies can be subtle and counter-intuitive. Pamela Meyer, author of "Liespotting," shows the manners and "hotspots" used by those trained to recognize deception -- and she argues honesty is a value worth preserving. (Contains mature content)

The 40 or so muscles in the human face can be activated in different combinations to create thousands of expressions. But do these expressions look the same and communicate the same meaning around the world regardless of culture? Is one person's smile another's grimace? Sophie Zadeh investigates. [TED-Ed Animation by Estúdio Bacuri]

"Babies and young children are like the R&D division of the human species," says psychologist Alison Gopnik. Her research explores the sophisticated intelligence-gathering and decision-making that babies are really doing when they play.

The name says it all: this session took a look at everything that human beings do, think and know. From thoughts on what makes a civilization decline to the roots of our morality, these speakers shared some of the stats and stories that point to our collective identity. Here, the speakers who appeared in this session. Click on their name to r...

Everyone experiences loss, but how do you cope with the tough moments that follow? Resilience researcher Lucy Hone shares three hard-won strategies for developing the capacity to brave adversity, overcome struggle and face whatever may come head-on with fortitude and grace.

Can you guess someone's political party based on their name? Can you guess how well someone fights just by looking at his face? In my book, Psy-Q, I explore these and other questions through quizzes, puzzles and experiments that are designed to improve your understanding of both your own psychology and psychology in general. Try these three ques...

In 1905, psychologists Alfred Binet and Théodore Simon designed a test for children who were struggling in school in France. Designed to determine which children required individualized attention, their method formed the basis of the modern IQ test. So how do IQ tests work, and are they a true reflection of intelligence? Stefan C. Dombrowski exp...

Before soldiers are sent into combat, they're trained on how to function in an immensely dangerous environment. But they also need training on how to return from the battlefield to civilian life, says psychologist Hector Garcia. Applying the same principles used to prepare soldiers for war, Garcia is helping veterans suffering from PTSD get thei...

Written by the educator who created What Makes Us Human?, a brief look at the key facts, tough questions and big ideas in his field. Begin this TED Study with a fascinating read that gives context and clarity to the material. As a biological anthropologist, I never liked drawing sharp distinctions between human and non-human. Such boundaries ma...

Biologist Richard Dawkins makes a case for "thinking the improbable" by looking at how the human frame of reference limits our understanding of the universe.

Laurie Santos looks for the roots of human irrationality by watching the way our primate relatives make decisions. A clever series of experiments in "monkeynomics" shows that some of the silly choices we make, monkeys make too.

Cognitive researcher Nancy Etcoff looks at happiness -- the ways we try to achieve and increase it, the way it's untethered to our real circumstances, and its surprising effect on our bodies.

Steven Pinker's book The Blank Slate argues that all humans are born with some innate traits. Here, Pinker talks about his thesis, and why some people found it incredibly upsetting.