Many of us have gotten into the habit of listening to podcasts, audiobooks and other online content at increased playback speeds. For younger people, it might even be the norm. One survey of students ...

TikTok, Instagram and YouTube clips are designed to overwhelm the brain's pleasure circuitry and keep people watching.

Humans respond to environments that change at many different speeds. A video game player, for example, reacts to on-screen events unfolding within hundreds of milliseconds or over several seconds. A ...