A Brain Wave Diagnostic Test for ADHD?

The FDA recently approved marketing of a brain wave device for diagnosing ADHD. On 7/22/13 Martijn Arns, PhD of Utrecht University in The Netherlands wrote a blog clarifying what exactly that means. Most importantly, that only in "a minority of ADHD patients (~25-30%), this measure is consistently found to deviate" from non-ADHD patients.You can read the full blog titled "A Brain Wave Diagnostic Test for ADHD? " here: http://www.chaddleadershipblog.blogspot.com/2013/07/a-brain-wave-diagnostic-test-for-adhd.html