Terence Williams has studied the occurrence of ADHD and has cited that neurobehavioral professionals recognize three different types of attention deficit hyperactivity disorder. The Predominant Inattentive type demonstrates as difficulties performing tasks, paying attention, organizing tasks and following directions. The person may forget details of performing tasks or may become distracted from the task at hand. The Predominantly Hyperactive or Impulsive type has difficulty sitting still, may run around constantly, and find many outlets for physical activity rather than sit in one place. The person may also interrupt people in conversation, grab things away from people at inappropriate times or speak out of turn. The impulsivity can demonstrate as frequent accidents or injuries. The Combined type of ADHD can show all of these symptoms in approximately equal amounts. Terence has been married for nine years to a wife that suffers from ADHD and it is his self-taught expertise that has allowed him to have a long and healthy relationship. You should pick up a copy of his book The Effect ADHD Has on Marriage to gain more insights into how you can save your marriage and how to recognize the signs in your spouse.