Frank was tested by the school psychologist and diagnosed with attention deficit/hyperactivity disorder (add/adhd). the test results have been explained to his parents. his parents are curious as to brain involvement and add/adhd. the school psychologist informs them that (a) add/adhd would be considered a developmental delay.(b) if there is a lag in neural functioning, it will go away with age. (c) some research indicates that add/adhd is related to a delay in neural development.(d) there is little research to link add/adhd with specific brain involvement.