It is a huge controversy. Some people who are uneducated about the disorder believe that it's simply of lack of motivation or will power of the person. Others believe that everyone's attention span can be variable at times and people with ADHD just have it more extreme. Even some of those in the medical profession wonder whether ADHD is the result of the abundance of stimuli that people are inundated with nowadays- life has gotten so much more crazy than it was a hundred years ago. It's not a surprise that human beings struggle to divide their attention.

There has also been criticism because the percent of people diagnosed with ADHD has grown tremendously over the last few decades. Part of it may be do overdiagnosis but it is also plausible that developing research may just be bringing an always present disorder to the forefront of people's minds and therefore people are being identified when they previously had not been.