There are different types of ADHD: attention deficit-oriented (mainly manifested by inability to pay attention for a long time, easily distracted, absent-minded in talking to the child, careless and sloppy in doing things, avoiding using the brain, losing things, etc.), hyperactive-impulsive-oriented (mainly manifested by excessive activity, inability to sit still, many small movements, talking too much, easy to interrupt, difficult to wait, etc.), and mixed type in which both of these manifestations are clearly present. So, if the child is attention deficit dominant, then he or she may not be hyperactive, but still meet the diagnosis of ADHD. Note that the full name of ADHD is Attention Deficit Hyperactivity Disorder, but it is simply referred to as “ADHD” in China. Boys are more likely to have ADHD than girls, and generally the ratio of boys to girls in ADHD children is about 3:1. However, many doctors actually believe that it is not that girls are less likely to develop ADHD, but that they have attention deficits as their main manifestation, and therefore do not exhibit the uncontrollable and troublesome behaviors that boys do when they are young. Now, more and more ADHD experts are discovering that ADHD affects girls in the same way as boys, so more and more girls with attention deficit problems are being identified, diagnosed and treated as early as possible.