Thanks, Grinity for your BTDT perspective. I think not talking down to a child is THE most important thing. We were at a library the other day and the librarian talked slowly to my DD and said "DO......you......know....what a veterinarian.....does....(not allowing her to say anything ,but then quickly saying) HE (ugh) takes......care....of.... animals!"
She said it in this slow strange voice that I may have used (not sure) when she was about two months old if at all. I'm a rapid fire speaker and she is set on HIGH so if a tester approached her in that way she would get bored so quickly!

Also, expecting too little could cause someone to see something as wrong right away, when it was actually right, just unexpected in its angle (I am guilty of this with her myself).

Truth is, there is no real pressing need to have the tests, so I have been looking around for the least expensive,closest option, even though I know some people think the tester matters as much as the test!