Visualizing 11 cognitive biases that influence how you think

The science of optical illusions

The human brain has developed cognitive shortcuts to help us navigate in a world where our visual senses are constantly bombarded of information. But these shortcuts can also be exploited, tricking the brain into telling us something is happening when it really isn't. This short video unpacks the neuroscience behind some of the most common (but perplexing) optical illusions.

CBT helps rewire the brain's false beliefs by challenging negative thoughts

Cognitive behavioral therapy identifies how specific situations can trigger distorted core beliefs—often formed early in life—that negatively shape thoughts and behavior. It frequently uses structured questioning that promotes self-reflection to uncover distorted thinking and guide people toward more balanced perspectives.

Pareidolia: the cognitive bias of finding meaning in randomness

Many people equate "random" with "well-spaced," creating a cognitive bias that influences how people interpret events. This article explains how people tend to assume a generative force behind the patterns produced by randomness. This phenomenon, known as pareidolia, is seen in claims ranging from backward messages hidden in reversed audio recordings to tea leaf readings.

AI tools are trained on human-created data containing implicit and explicit biases

Because AI tools reflect patterns in their training data, their outputs may reinforce existing societal biases—especially racial ones—rather than offering neutral or fair ones. Adequate training is necessary to undermine these biases whenever new data is incorporated.

Common mistakes we make about the world map

Maps have long loosely approximated what the world actually looks like. Here's a few common errors that persist due to outdated conceptions of the world.

Ranking life's biggest decisions

Psychological research presents some unsurprising wisdom about how to make big decisions without regret: focus on people, don’t miss opportunities, and stay true to yourself.

How metaphors shape the way we think

A metaphor is often viewed as a form of art, deployed only in special circumstances to help an audience grasp something complex or unique. But metaphors are far more fundamental than that, shaping much of how we think about our relationship to others and the world. This article explores how a focus on the metaphors we use can clarify and strengthen our thinking. Learn more here.

Addressing psychological barriers to building wealth

Almost half of adults in the US report owning no investable assets. For many, the barrier to entry is the belief that investing is too complex for them to get involved. Consulting with a financial psychologist, this article addresses the cognitive bias that causes so many people to miss out on financial opportunities, and offers tips on how to get past the anxieties and just begin.

The history of brainwashing in America

"Brainwashing" refers to a coerced shift in worldview, often associated with cults or oppressive totalitarian governments. Though such processes are not well understood on a neurological level, they hold an outsized role in public imagination, particularly in science fiction and dystopias. This article reviews the history of the term, first popularized by Edward Hunter in 1950, and the subsequent use of the approach in pop psychology, the CIA, and more.

Why your favorite color is probably blue

From a young age, we are primed to choose a favorite color, but strangely as we grow up, our preference often changes—and it’s largely due to influences outside our control.

Nostalgia is a psychological coping mechanism created from bias

Memories are naturally reconstructed during recall, and research has shown a fading effect bias that causes negative ones to fade more quickly, helping us heal. This creates a natural longing for the past, particularly when faced with loneliness, boredom, or challenging moments in the present.

According to Bill Nye, science is under threat from an erosion in critical thinking

He states that conducting research online cannot replace consulting with scientific experts who have spent their entire lives intimately studying a field. The former science education show host argues that deepening cynicism towards scientific institutions has been fueled by leaders embracing debunked and unsupported claims.

A Harvard professor argues that impostor syndrome can be a good sign

Specifically, Arthur C. Brooks has argued that self-doubt is usually evidence of healthy humility—not incompetence—and a clear contrast to the overconfidence of people who actually are impostors in their careers.

How grudges mostly hurt ourselves

Grudges feel like revenge against those who have done us some wrong and are very common. In this "Hidden Brain" podcast, psychologists explain how grudges end up only hurting us rather than those we hold them against. By using historical examples, the researchers show the counterintuitive danger of grudges and how people can learn how to avoid them.

Climate determinism wrongly linked human traits and societal progress to geography

Historically rooted in Greek philosophy, its ideas used the latitudes where people were located to justify racial hierarchies, casting tropical peoples as lazy or inferior. These biases still influence how media and research portray people in climatically disadvantaged regions. (Some readers may experience a paywall.)

Problem solving, problem recognition, and learning ability makes up intelligence

Psychologists have several theories from which the concept of intelligence is explained, including general and multiple intelligences. Although IQ is used to quantify intelligence, issues like its cultural biases have spurred debate.

Research shows that, on average, humans correctly spot liars about half of the time

Polygraph tests, also known as lie detectors, are better at detecting lies than people, but they still aren't allowed in most courtrooms. That's in part because of mixed signals. For example, spikes in heart rate can be explained by the stress a person feels during interrogation rather than by their own deception. As a result, polygraph tests are prone to false accusations. Results are also unreliable when participants actually believe their lies, examiners have biases, and tricks are employed to help test-takers relax.

Six of history's most unethical human experiments, from deliberate flu exposure to withholding syphilis treatment

Some of the progress made in mental health treatment, vaccines, blood transfusions, and more came about before the advent of consent and ethics committees, resulting in serious physical and psychological harm that participants in studies were not even anticipating.

Novels sometimes use unreliable narrators

When we read a book, we’re effectively forced to take the narrator’s word for what’s unfolding. But what if that narrator has a biased take on those events? What if, in a general sense, that narrator can’t be trusted? Enter the unreliable narrator, a strategic way of shaping a story that adds an additional layer to the narrative.

Why do people join cults?

This quick TED video dives into some of the social psychology behind membership in radical cults, including famous ones where members took their own lives.

Are you a digital hoarder? There are four types, actually

Digital hoarding: the phenomenon where people accumulate excessive digital clutter, like thousands of emails, hundreds of open browser tabs, and unused apps on their devices. This behavior has been associated with increased stress levels and potential negative impacts on mental well-being. Are you a digital hoarder? Find out the four types here.

ADHD impairs working memory and limits the ability to form long-term memories

While ADHD is most often recognized for producing struggles with attention and organization, these executive functions are critical for capturing the data that creates memories in the brain. Breaking data into pieces, or chunking, helps address these struggles.

Is conventional wisdom about amyloid plaques wrong?

Neurobiologist Karl Herrup makes the case for reevaluating current research paradigms and embracing a more comprehensive understanding of Alzheimer's disease. He highlights years of failed clinical trials of drugs reducing amyloid plaques in treating Alzheimer's, the establishment of that theory based on a single patient, and more.

See the global blindness burden by cause and continent

These charts show the estimated number of people worldwide with blindness due to cataract, glaucoma, refractive disorders, age-related macular degeneration, malaria, river blindness, trachoma, and other causes.

An interactive timeline of history's famous figures

The past few millennia of humankind have produced numerous figures who left their mark on culture and society in their respective era. This interactive timeline from data visualization expert Jan Willem pulls data from Wikipedia to illustrate history's most important people relative to their prominence in modern-day thought.

Crows are believed to have intelligence on par with a seven-year-old child and demonstrate complex behaviors, from problem-solving with tools to recognizing human faces.

Alzheimer's can lead to brain shrinkage, with an average of around 2% of volume reduction per year

When you complete a CAPTCHA on a website to prove you are human, you may be unknowingly training algorithms for self-driving cars, whose systems require training data to help identify crosswalks, bicycles, and other outdoor objects.

Researchers believe the brain consolidates memories, processes emotions, and plans for the future during dream states

Explore an interactive map built from more than 100,000 survey responses on where people find joy in their lives

Clever Hans was a 1900s horse that was believed to be able to solve math equations, tell time, and read and comprehend German, until a psychology student discovered how he got his answers.

Browse a detailed visual analysis of over 200,000 similes—comparisons that often use 'like' or 'as'—from popular fiction to see how frequently writers the same idiomatic expressions.

Fear or disgust related to clusters of holes and cracks, called trypophobia, may stem from evolutionary processes to help us avoid pathogens.

Visualize how CRISPR-Cas9—a type of immune system used by single-celled organisms to attack invasive viruses—targets and makes precise changes to a gene's DNA.

Chaos theory—informally known as the butterfly effect—is the reason why weather forecasts are presented with probabilities rather than certainties.

Netflix profits when you're not watching, and its movies are designed that way—read a detail-rich critical essay exposing lesser-known Netflix takes

Use this calculator to find the dollar value of your mental load, from meal planning to coordinating after-school care for your children.

How the most famous Ebola book, The Hot Zone, which sold 3.5 million copies and was translated into 30 languages, got aspects of the disease so wrong.

A Yale student wrote a profound essay about the consulting industry's influence on elite college students that was published in a book of her writing after she died in a post-graduation car accident.

See 33 images that became central to huge scandals, including a young Charles and Camilla, Michael Jackson's baby on a hotel balcony, and Hugh Grant's mugshot.

As of 2025, the most cited papers in science include a review of graphene, methods to improve image recognition, streamlining electron density calculations, and optimizing protein studies.

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

According to the physics of black holes, our 4D reality may be a hologram—a projection of information coded on a 2D surface on the edge of the universe.

The Nasdaq's 'Magnificent 7' companies are responsible for roughly 40% of the Nasdaq 100 index's gains, while the remaining 93 companies account for the other 60%.

Explore the known asteroids, comets, and spacecraft involved in asteroid studies within our solar system with 'Eyes on Asteroids,' a 3D visualization from NASA.

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

See how fireworks are made and learn how metals like magnesium and copper are responsible for different colors.

Frank Lloyd Wright's houses are historically hard to sell because they're old, subject to local landmark commissions, and often unfashionable

The first steps to rebuilding your credit score include getting to know exactly what's on your credit report and figuring out how far you are from the '700 club,' or 'good score' range.