[单项选择]Children have been said to have braininjured child syndrome, hyperactive (极度活跃的) child syndrome and attention-deficit disorder (ADD). As early as the 1940’s, psychiatrists have (62) children with hyperactivity and extremely distracted and impulsive. These frequent name changes show how (63) researchers are about the causes of the problem and the diagnostic (诊断) (64) for the disorders.
In the past several years, the people who study attention deficit hyperactivity disorder (ADHD) have (65) to clarify the disorder’s causes and (66) , and have reasons to believe that it may be (67) Today’s view on this disorder is very different from the beliefs of just a few years ago.
Researchers are finding that ADHD is not a disorder of just attention, but is from a developmental (68) in the brain’s circuitry and self-control. The loss of self-control (69) other important brain fuctions compulsory for (70) attenti