American Heritage Dictionary:

attention deficit disorder

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n. (Abbr. ADD)
A syndrome, usually diagnosed in childhood, characterized by a persistent pattern of impulsiveness, a short attention span, and often hyperactivity, and interfering especially with academic, occupational, and social performance.


attention deficit disorder

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Dictionary of Cultural Literacy: Health:

Attention Deficit Disorder

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A disorder characterized by a difficulty in retaining focus, especially on tasks, for long periods of time.

  • One of the most common reasons children are brought into therapy, ADD is often treated with the somewhat controversial drug Ritalin®, which is thought to work by stimulating the attention-focusing structures of the brain.

  • (ə-tĕn'shən)
    n. (Abbr. ADD)
    1. A childhood syndrome characterized by impulsiveness and short attention span, and sometimes by hyperactivity that often leads to learning disabilities and various behavioral problems.
    2. See minimal brain dysfunction.

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