The incidence of BTD (Boring Teacher Disorder) is clearly greater than ADD or ADHD.
Rudolph Flesch called it disteachia.
Oh certainly. But that's a far cry from saying that they don't exist.
I am quite critical of the absurd overdiagnosis of ADD and ADHD for kids simply being kids - and the obscene overprescription of ritalin or psychiatric medicines - but there are some that genuinely do have those problems. ...Kids that are very well behaved otherwise, with strict, attentive parents.