- attention deficit disorder (n.)
[attention deficit disorder 词源字典]
- (abbreviated ADD) became a diagnosis in the third edition of the "Diagnostic and Statistical Manual of Mental Disorders" (1980); expanded to attention deficit hyperactivity disorder ("the co-existence of attentional problems and hyperactivity, with each behavior occurring infrequently alone;" ADHD) in DSM-III (1987).[attention deficit disorder etymology, attention deficit disorder origin, 英语词源]