I don't know if this has been posted on this site but I came across it somehow.
http://www.pbs.org/wgbh/misunderstoodminds/attention.html

It has both an audio and a visual test that you can take which simulates what it is like to read with an attention problem and also to listen to directions. I thought it was extremely accurate. I sent the link to some members of my family, who don't deny I have ADD but also don't understand the impact that it has on my day to day existence. I generally don't talk to them about it and they don't ask questions about it.

Everyone called me and told me how difficult it must be and the test amazed them. I kind of felt like they understood how difficult things have been.

Debs,
Thanks for the link to an excellent site.

Thank you for the link Debs. I sent it to my son's teacher too so she could see also.

Wow what a great site...thank you :)

Wow. I think I might pass this on to my family as well.

Thanks. I put that documentary in my Netflix queue.

Thanks great site I am still trying the tests and I am still failing.

I got a copy from the library. Tried to watch it last night, but only got into about 20 min. and then fell asleep.:D The auto-rewind woke me up. Very interesting so far.