Isbister’s team developed a high-tech ‘smart’ fidget ball for use in the study of fidgeting in adults with ADHD. You’ll find them in nearly any department store or gas station: Fidget spinners, fidget ...

You’ll find them in nearly any department store or gas station: Fidget spinners, fidget cubes, and other devices designed to help you focus. There’s no scientific evidence about whether they work, but ...