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 ...

Clapping is both a scientific event and a social gesture. A study explores the complex physics behind the sound of clapping. The noise originates from compressed air, not just hand collisions.

$24.95 304 pp. Other reasons to dislike Toby Young: He’s as vapid and fame-starved as any Real World cast member. The critical eye he capably turns on pop culture, love and marriage somehow dissipates ...