Fidget spinners are advertised to increase concentration and attention to academic tasks. Past research suggests that hyperactive movements, such as fidgeting, improve performance on attention tasks in children with attention-deficit/hyperactivity disorder (ADHD).
With fidget spinners, a need to fidget stops being seen as something that sets these children apart and makes them feel "different," and more something that everyone is doing, a trend that they are in on, which provides social comfort for many who are just trying to fit in with their peers.