Which of the following is not a primary characteristic of ADHD?

short attention span

difficulty concentrating and distractibility

restricted and fixated interest

excessive fidgeting and squirming

restricted and fixated interest

Explanation:

Attention-Deficit/Hyperactivity Disorder is the disorder which makes the individual loose control on the impulsive behavior and to give attention. It leads to restlessness and over activeness thereby creating an abnormal behavior altogether. Much of the symptoms start to become visible during childhood but the symptoms may appear in adulthood also.