Bertrand it's amusing that you won't 'stoop' to answering my questions because you can't but are happy to slyly refer to my posts, indirectly. Rather passive aggressive that.
Anyway, IME children already know if they're 'one of the clever ones' long before they sit the 11+.
I have worked as a TA in primary schools, and the pupils have a pretty accurate idea of where everyone is, academically, in relation to everyone else in their class.
Long before the 11+ both my DDs had had plenty of 'failures' to experience. Whether that be them failing to get on the school Netball team, or failing to get the lead in the Nativity play, or coming last at sports day.
I think you are projecting your own (clearly intense) bitterness and horror of failure on to others, who are probably far more phlegmatic about the 11+.
And, I speak as someone who knows 100% that she would never have passed the 11+ (hopelessly crap at maths), but it has never, remotely made me feel like a 'failure'.
I just don't have that sort of brain. When the DDs and DH are talking maths, I just acknowledge that my brain works differently to theirs.