Some theories include: we chew nails because we seek perfection, or just because they're there.

Developed by a mother-daughter team in the early 20th century, these types are everywhere from corporate culture to dating app bios.

It seems flattering, but all people want is security in the face of a shaky future, a psychologist explains.

Emotional arousal is a heightened physiological response, and responses to emotions like fear are similar to the feeling of falling in love.

The difference between either reaction depends on whether people want to focus on their stress or distract themselves.

Our brains are desperate to ensure free will, even when we're fully aware that it's the wrong thing to do.

These hormone inhibitors pause the development of primary sex organs and secondary sex characteristics, allowing kids time to understand their gender identities.

Be the drummer who was fired before The Beatles became successful.

No, this is not a sex thing.

Adopting neutrality in situations where innocent lives are on the line is never 'neutral'.

The film's portrayal of a reckoning with sexual assault falters due to its caricatured characters.

While antidepressants are effective for managing mental health symptoms, they were never supposed to be a long term solution.

Trying to understand what is probably the dumbest misogynistic thing known to woman.

Even with unanimous political backing, the annual cost to execute the plan is still a hurdle.

Researchers concluded that our intuitive moral compass leans towards fair, equitable punishment.

Unlike those with narcissistic personality disorder, individuals with HPD can show empathy and betray more vulnerability.

Looking through private devices, posting pictures without consent, and threatening via text are all signs of digital dating abuse.

Facial expressions are notoriously faulty indicators of internal emotions.