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Psychology

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Psychology

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Handwriting can reveal a writer's identity—not their personality
Psychology

Handwriting can reveal a writer's identity—not their personality

Forensic examiners compare writing to help assess who produced a document. Graphology makes a different leap: it claims a loop or slant reveals character.…

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Humans are infinitely more likely to laugh in a group
Psychology

Humans are infinitely more likely to laugh in a group

People laugh more readily in company because laughter helps coordinate a group. One person’s laugh invites others to join, turning a private reaction into a…

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Sleepwalking has been used as a murder defense
Psychology

Sleepwalking has been used as a murder defense

Sleepwalking comes from an incomplete awakening: parts of the brain can drive movement while the person is not fully alert. That unusual state has been raised…

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Birth order predicts less about personality than family stories suggest
Psychology

Birth order predicts less about personality than family stories suggest

A large 2015 study found a small average intelligence advantage for firstborns, but no lasting birth-order effects on several broad personality traits. The…

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IQ tests had to adjust as scores rose across generations
Psychology

IQ tests had to adjust as scores rose across generations

The Flynn effect describes large twentieth-century gains on many intelligence tests. Proposed contributors include changes in education, nutrition, and…

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Most people with Tourette syndrome do not have the famous swearing tic
Psychology

Most people with Tourette syndrome do not have the famous swearing tic

Tics can include blinking, movements, sniffing or repeated sounds. Coprolalia—involuntary obscene words—affects only a minority of people with the condition.…

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Your dog may catch your yawn more readily than a stranger's
Psychology

Your dog may catch your yawn more readily than a stranger's

In a 2013 experiment, dogs yawned more in response to their owners than to unfamiliar people. Researchers also monitored heart rate to examine a possible…

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In the wild, wolf pack leaders are the parents
Psychology

In the wild, wolf pack leaders are the parents

The familiar image of wolves constantly fighting to become “alpha” misses the ordinary family structure of many wild packs. The leaders are generally the…

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Truth serum can make you talk without making you truthful
Psychology

Truth serum can make you talk without making you truthful

Drugs used as truth serums can make it harder to keep thoughts private, which may produce more talking. More talking is not the same as more truth: a relaxed,…

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Only children grow up with normal social skills
Psychology

Only children grow up with normal social skills

Siblings are one place to practice sharing, arguing, and making up—not the only place. Only children can build those skills with friends, classmates, cousins,…

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Writing down dreams helps you remember them
Psychology

Writing down dreams helps you remember them

A dream may feel vivid for a moment and then dissolve as waking thoughts take over. Writing it down quickly makes you retrieve and rehearse its details…

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Beer goggles can hide facial flaws
Psychology

Beer goggles can hide facial flaws

A few drinks can make a face seem more attractive partly by changing what you notice. Alcohol can blunt careful, critical judgment, making small imperfections…

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A horse fooled crowds by reading their body language
Psychology

A horse fooled crowds by reading their body language

People thought the horse knew when to stop tapping. In fact, Hans watched the person asking the question: as the count approached the answer, that person…

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The IQ test began as help for French children
Psychology

The IQ test began as help for French children

Alfred Binet and Théodore Simon developed an early intelligence test to identify French schoolchildren who needed extra help. The goal was practical: spot…

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The same vocal habit can draw a harsher verdict on women
Psychology

The same vocal habit can draw a harsher verdict on women

In a 2014 listening experiment, voices using vocal fry—the low, creaky sound at the bottom of the range—received worse hiring-related ratings. The penalty was…

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Creativity isn't confined to one side of your brain
Psychology

Creativity isn't confined to one side of your brain

The left-brain/right-brain story gives creativity a tidy address, but making something new involves many connected skills. You might draw on language to shape…

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People who swear more may lie less
Psychology

People who swear more may lie less

People often tidy their language to manage how they come across. Someone who swears freely may be doing less of that verbal grooming, which can correlate with…

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Why fake laughter sounds different from real laughter
Psychology

Why fake laughter sounds different from real laughter

A laugh you force often comes out more even and controlled than one that erupts on its own. Spontaneous laughter tends to break into irregular bursts as…

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