• Children and teens with ADHD are easily bored and have an aversion to delayed reward.
• Internet behavior is characterized by rapid response, immediate reward and multiple windows with different activities, reducing feelings of boredom or delayed aversion.
• While playing online games, striatal dopamine is released, possibly compensating for the dopamine deficit in teens with ADHD.
• Children with ADHD have abnormal brain activities associated with impaired inhibition. This lack of self-control may make it difficult for them to control their Internet use, making them vulnerable to Internet addiction.