Emotions

What are the health benefits of laughter? What is happening in the brain when you're in love? What are the effects of isolation on the mind? Find out in these articles about human emotion.

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There's a connection between our physical bodies and the way it responds to emotion -- but scientists aren't quite sure what it is. Could it be that happiness is little more than a series of neurochemical responses to the world around us?

By Josh Clark

You think you'd know what happiness was -- you've felt it before, right? Not quite. It turns out that the definition of happiness pretty much depends on who's defining it.

By Josh Clark

Studies seem to indicate that men are more likely to harbor violent tendencies than women. What factors do researchers use to come to these conclusions, and most importantly, is it true that men are more violent?

By Jonathan Strickland

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Why do we help others, even if we know it will hurt us? As it turns out, the concepts of altruism and selfishness may be linked -- much more so than we thought.

By Josh Clark

Most people would recall every detail of being held up in a bank robbery but not so well the details of their last birthday party. The brain is wired for recalling trauma for a very good reason.

By Colleen Cancio

Aristotle defined hate as a dislike so intense that whoever feels it wants to cause another person real harm. What is going on in our brains when we hate? And can hate ever be a good thing?

By Patrick J. Kiger

Ignorance is bliss. But what if you're more than just unaware? If you are dumb as a doornail, flat-out foolish or dim-witted, are you happier than the genius next door?

By Cristen Conger

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Laughter may be the best medicine, but can it actually cure an illness? Some doctors are prescribing a daily case of the giggles along with conventional treatments.

By Victoria Vogt

The Declaration of Independence is one of the most significant documents in American history. However, the origin of one of its signature phrases -- the pursuit of happiness -- is shrouded in mystery.

By Josh Clark

Marriage entails waking up beside the one you love and sharing cozy, homemade dinners for two. But when the honeymoon haze clears, are married people happier than singles?

By Cristen Conger

How does a laughter milkshake sound? What about a joy cocktail? Though the former may sound like part of a kid's meal and the latter like a happy hour order, they're both related to laughter yoga.

By Molly Edmonds

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If you want to quantify how happy someone is, do you count the number of smiles he or she cracks in a single day? Some researchers are stumped as to how happiness can be measured.

By Cristen Conger

The authors of chain emails often tell you to smile more, with the added claim that it takes more muscles to frown. Ever questioned this piece of wisdom? We have an answer for you.

By Tom Scheve

Smiling isn't complicated: your mouth turns up, your cheeks lift and your eyes crinkle. You're happy and it shows. But can every smile -- even a fake one -- spread that cheerful feeling?

By Julia Layton

We love to play with and fuss over our pets, but have you wondered if they were having as much fun as you were? Can animals actually feel happiness?

By Josh Clark

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What are your happiest childhood memories? What do you remember most about them -- the things you bought or the gifts you received, or the events themselves?

By Josh Clark

From giggles to guffaws and chuckles to cackles, humans laugh in a lot of different ways. But what do each of those laughs mean, and are they all related to humor?

By Molly Edmonds & Joseph Miller

From an adult's point of view, kids have it made, spending their days playing and goofing off, with no responsibilities to worry about. But are kids really jumping for joy more often than the rest of us?

By Tom Scheve

Normally, we laugh because something's funny, but sometimes laughter can be something more serious -- a medical symptom. What separates a hearty guffaw from a signal of poor health?

By Victoria Vogt

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The great bullies that have graced the movie and television screen are mostly males, from Bluto to Biff Tannen. We tend to expect boys to throw the punches. But just because girls aren't bloodying noses on the playground doesn't mean they aren't fighting dirty.

By Molly Edmonds

Your little brother might think it's funny to put a rubber snake in your pocket or jump out from a closet in a dark hallway, but your heart rate might disagree. Is it possible to be scared out of both your wits and your life?

By Molly Edmonds

If someone tells you he or she possesses the secret of happiness, that person may also have a bridge to sell you. The things that make some people happy may lead to utter despair in others. As it turns out, humans may have to look into themselves to find happiness.

By Josh Clark

What constitutes happiness? Is it the absence of pain or an abundance of pleasure? It is simply a fortunate function of the brain? If it's the latter, then we should be able to manipulate it -- perhaps in the form of a "happy pill." It may surprise you, then, to learn that we already have one.

By Josh Clark

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Happiness is a wonderful thing. Unfortunately, it can also be elusive due to stress or depression. However, strategies abound that you can use to trick yourself into being happy. Ready for 10 of them?

By Josh Clark & Jessika Toothman

A new study shows that mothers prefer daughters and fathers prefer sons, regardless of economic background, contradicting an earlier well-known hypothesis.

By Alia Hoyt