Hand clapping is ubiquitous behavior for humans across time and cultures, serving many different purposes: to signify approval with applause, for instance, or to keep time to music. Acousticians often ...

WHEN I WAS GROWING UP, I ENVIED SALLY CULVER. Though she was five years younger, she had somehow managed to get herself a fan club. It began one summer evening, when Mrs. Culver brought her 1 year-old ...

Clapping is a behavior so deeply rooted in human beings it’s almost an instinct. You can see babies and toddlers clapping just because everybody else is, and if you’ve ever felt the pressure to be ...

One readily noticeable pathognomonic trait of autism is hand-flapping—a stereotyped motor movement that can look a bit like an attempt to accelerating the drying of nail polish. Not all with autism do ...

Most of us think clapping is just about two hands hitting each other, but new research out this week in the journal Physical Review Research found that the clap that we hear actually comes from the ...