attention deficit hyperactivity disorderattention deficit hyperactivity disorder
a psychological disorder, assessed on the basis of behavior appropriate to a given mental age, characterized by inability to concentrate, hyperactivity, impulsiveness, etc.
also written attention-deficit (hyperactivity) disorder
attention deficit hyperactivity disorder
A neurodevelopmental disorder that begins in childhood, characterized by persistent impulsiveness, difficulties in focusing on tasks or paying attention, and often hyperactivity, and interfering especially with academic, occupational, and social performance. Also called attention deficit disorder .
- Alternative form of attention deficit hyperactivity disorder.