I took the Conners space bar test where an X appears on the screen and every time you see it, you press the space bar. It tests your reaction time and other facets. I read that there is a 40% chance of false test results. I argued with a psychologist that a 14 minute test cannot be the only test to rule in or out ADHD. Actually these test cannot test hyperactivity so a thorough exam by a mental health professional with one's history taken into account is the only way to properly be diagnosed with ADD or ADHD.

I researched this and all of the experts agree that taking a history from the patient and the use of testing help to arrive at a diagnosis. Tests alone are not enough.

Hope this helps