A team led by Nagoya University Graduate School of Medicine in Japan has investigated screen time in autistic (ASD) and ADHD children. Screen time refers to the amount of time a person spends on a device with a screen, such as a smartphone, computer, television, or video game system. The researchers found that children with a genetic predisposition to ASD were more likely to use screens for longer periods. Meanwhile, children with ADHD gradually increased their screen time as they grew older, even if their initial screen use time was short.