Only as good as the tester. I am intelligent, top 2%. Some psychologist I paid to test me for ADHD said I didn't have it. My concentration was well ABOVE average.

Omg.

I asked if my memory was also well above average. It was!

I asked if my memory was better than my concentration. It was.

I asked if my concentration was SIGNIFICANTLY lower than my memory.

It was.

And was that perhaps indicative of ADHD?

Oh! ??? It could be!

That exchange was so tedious l Iost interest in ADHD and remained untreated another few months.