http://time.com/money/4774133/fidget...nxiety-stress/
Quotes:
Some experts do believe that so-called "fidgets" — silent, unimposing toys like squeezey balls or textured items like puddy — can provide some children with an outlet for brain stimulation to counteract hyperactivity in the classroom. But, says Anderson, “the distinction between those interventions and [fidget spinners] is that those interventions allow the child to move, but this particular intervention isn’t necessarily letting the child get their wiggles out, but rather play with a toy."
“Fidget spinners are giving fidgets a bad name," says Elaine Taylor-Klaus, co-founder of ImpactADHD, a coaching service that helps parents with children who have ADHD.
Dr. Mark Stein, director of ADHD and related disorders at the Seattle Children's Hospital and professor at the University of Washington, says fidget spinners should not overtake proven methods of treating the condition. “My worry is that they’re very much a distraction, not only to the child, but it distracts people from doing something that we know works,” Stein says.“It is worrisome that business is entering this area,” Stein adds. “Families with children with neurodevelopmental disorders are vulnerable and want to do everything they can do to help.”