Playing fidget spinner can can benefit kids with autism. A 2015 study published in the Journal of Abnormal Child Psychology by Rapport and his colleagues looked at 8 - to 12-year-old kids with ADHD. The researchers found that those who participated in gross motor activity performed better than those who sat still during tasks involving working memory. They means the movement of limbs or large parts of the body. It is a type of memory used for processing incoming information. Exercise has also been proven to be helpful for kids with ADHD.
But without studies that specifically look at fidget spinners, it's impossible to say for sure whether the devices could help kids with ADHD, Rapport told Live Science.