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Fluoride in water doesn't affect brain development, another study finds

A study out of Australia finds, again, that fluoride in water is not linked to lower IQ.

Your Brain Has A Special Set of Neurons That Only Light Up for Music

Scientists have discovered unique neurons in the brain that respond only to music.

Why older adults are getting smarter than before: insights from new research

The cognitive gap between generations is narrowing.

How much of human intelligence is genetic versus acquired? Is it even possible to get smarter?

Intelligence, a blend of genetics and environment, centers on problem-solving abilities and is best enhanced through learning and formal education.

What do animals dream about?

Turns out, animals dream a lot like us: about everyday life.

Do we think in words or pictures?

It's a mix of both and much more.

Why we mix people's names: science says it's because you might care about them

It's perfectly normal to mix the names of loved ones. It's called a cognitive glitch.

The cocktail party effect -- our stunning ability to filter out words and sounds

It's a noisy world yet we somehow cope in the cocktail party of life.

Why are some people so competitive? The psychology of competitiveness

Exploring the fascinating psychology of a competitive person.

What chemicals make you happy?

Discover the science behind the happy chemicals in your brain.

Why serotonin makes you happy (or very, very sad)

Serotonin is a neurotransmitter in the brain that regulates mood and behavior and is associated with happiness and contentment.

Why dopamine makes you happy

Explore the power of dopamine, the "happy" chemical in the brain, and discover how it impacts our mood, motivation, and behavior.

Implicit Memory: What Is It And What Does It Do?

Implicit memory is why you never forget how to ride a bike or play the guitar.

Can you raise your IQ score?

Is it possible to have a higher IQ by training?

The Call of the Void: why you sometimes feel like jumping from high places

That weird feeling has a name -- and an interesting bit of science behind it.

What is the Oedipus complex, according to experts

If all your boyfriends or girlfriends look like your parents, Freud's ghost could be slowly nodding with a knowing look somewhere.

What makes things funny? The science of humor explained

Why is that YouTube video so hilarious? Let's home in on funny.

The Ames Room: The optical illusion that will make you doubt your eyes

The Ames Room illusion challenges our understanding of perception and shows how easily our brains can be tricked by visual cues.

What makes things cute?

It's obviously kittens. Just stick kittens on everything.

Meet the people who literally feel no fear

Fear is hundreds of millions of years old. But some people have the superhuman ability to laugh in its face.

What happens in the brain when you mix marijuana and alcohol

Mixing alcohol and marijuana, known as crossfading, can amplify the highs but also the lows.

The sleepless elite: are you a short sleeper?

Many claim to be a part of the sleepless elite. But short sleepers are few and far between.

Does the 'Superhero' pose actually make people feel more confident?

A lot of bold claims have been made about the psychological impact of standing tall with a puffed chest and hands plants on the hips.

What was Albert Einstein's IQ?

Einstein never took an IQ test but some academics have estimated his score based on historical records.

What is the highest IQ in the world (and should you actually care?)

A high IQ is a nice head start -- but it's far from telling the whole story.

What is decision paralysis and how to not let it defeat you

It happens more often than you think.

Science shows what type of flirting works best

To master the art of flirting, it helps to study the science.

What is synesthesia: Hearing sounds and tasting shapes

What does this article taste like?

What is eidetic memory: the poor man's photographic memory

Sorry to bust your bubble, but there's no such thing as photographic memory. Here's the next best thing.

Brain scans are saving convicted murderers from death row–but should they?

Perpetrators of horrendous crimes could avoid the death penalty because of their brainwaves.

Left, right, or ambidextrous: What determines handedness?

Less than 1% of the population can use both their hands equally well at any task. But there's still much we don't know about this fascinating ability.

What is Stockholm syndrome?

Trauma can sometimes leave surprising traces.

The appeal of the paradox -- mankind's fascination with self-contradicting ideas

Paradoxes aren't always questions, sometimes they go beyond logic, and can help us improve our way of thinking.

Being multiple people: Diving into Dissociative Identity Disorder

Your altered identities may never let you know if you have dissociative identity disorder, and sometimes it's for the collective good.

Are male and female brains really different?

The field is rife with 'neurosexism'.

The Yerkes–Dodson law, or why you mess up tasks when your crush is watching you

All it takes is that little bit of extra pressure.

What's the difference between a psychopath and a sociopath

One is born… the other is made.

What is a narcissist really?

Everyone knows narcissists are full of themselves -- but there's much more to it.

How long it takes to break a habit, according to science

Did you honestly expect a straightforward answer?

Your brain on masturbation

Let's get some things straight about auto-euroticism.

What is stress and how it affects our mind and body

An ancient mechanism meant to keep us alive can overwhelm us in today's world.

The Mandela effect: how groups of people can all remember the wrong thing

Although popularized by a "paranormal consultant", the effect is real.

What is attention deficit hyperactivity disorder (ADHD)?

ADHD is more complex than the stereotype of loud, insubordinate, and restless children.

What is happiness?

We want it, we treasure it, we go to great lengths to attain it.

The Dunning-Kruger effect, or why the ignorant think they're experts

To err is human. But, to confidently persist in erring is hilarious.

What's the link between music, pleasure, and emotion?

It's basically just sound, so why can it influence us as it does?

What is brain fog: the mental fatigue that ruins your mood

The worst kind of fog there is.

Is photographic memory real? Not quite, but there's something that comes close

Our memory doesn't work like a camera. But even though there's no such thing as photographic memory there are some people who are very gifted.

Do stress balls really work? What the science says

You seem them in every corporate office but do these squishy foam balls actually relieve stress?

Why we yawn and why it's contagious

Just thinking about it makes me yawn -- because it's contagious, not because it's boring.