Attention-deficit hyperactivity disorder (ADHD) is a common problem among school-age children, affecting about 3% to 7%, or nearly 4.5 million in the United States alone. The disorder has been the focus of thousands of studies since the 1960s, but the cause is still unclear. Take our quiz to find out how much you know about ADHD.

1. ADD and ADHD are different conditions.

True
False

2. Attention-deficit hyperactivity disorder is one of the most commonly diagnosed behavioral conditions in children.

True
False

3. Attention-deficit disorders are easy to recognize.

True
False

4. Attention-deficit disorders seem to run in families.

True
False

5. Adults don't have attention-deficit disorders.

True
False

6. Medication is enough to cure ADHD.

True
False

7. Responding well to ADHD medication means that a child has ADHD.

True
False

8. Eating less sugar can help most children with ADHD.

True
False