There is a lot of evidence that it helps keep kids occupied/distracted. This is causing some problems in the classroom because I guess some teachers are for them and some against. I would imagine the "old school" teachers probably are not too fond of them. A lot of people say they help kids that have ADHD focus better. However, as I mentioned in the article, there have not been any legitimate studies to prove that theory right or wrong yet.
RE: Amazing Tricks You Can Do With Your New Fidget Spinner!