What are the main factors that cause ADHD? Is there a genetic component? The cause of ADHD is still uncertain, but genetic factors play an important role, for example, many children with ADHD have parents with adult ADHD. Is a child’s naughty personality more likely to lead to ADHD? A child with ADHD is not the same as a child with naughty personality. Although a child with naughty personality seems to be very active, a normal child has the ability to control his or her behavior in a prescribed place or in a situation where he or she is not supposed to move, while a child with ADHD knows that he or she should not move, but he or she cannot control his or her behavior. The core causes of ADHD are attention deficit and impulsivity, and are not directly related to the personality traits of hyperactivity.