This labelling mentality really gets up my nose.
When my daughter was four (4!) her nursery suggested to us she might have Aspergers because she liked to play imaginatively on her own, likeed to do things in a set order, was reluctant to join in group with activities, was shy plus some other things that are even more too trivial to remember.
Now, aside from the fact that it is not within the remit of glorified babysitters to suggest such a 'diagnosis', the 'symptoms' they described are present in me, her mother, her grandparents, her aunts, uncles and cousins....in fact pretty much everybody I know displays some or all of the symptoms they flagged up.
However, this was our first child, so this suggestion from 'professionals' worried us and we did a lot of research. I'm not talking a cursory 10 minute Google search - we have more than a dozen books on this syndrome and I consider myself to be a very well informed amateur.
As a result of this 'diagnosis' from the nursery she was put on the SEN register at her primary school. Fortunately, her teachers in year 1 and 2 are very experienced teachers and they've dismissed the label out of hand and she has been removed from the SEN register (incidentally, I understand schools get extra money for their SEN kids, so the cynic in me..............)
The rush to label children is wrong - if a kid is a bit naughty, they have ADHD, if they struggle to read, they are dyslexic, if they display certain traits, they have Aspergers.
My advice would be pretty much the same as Bummle's. Don't say anything and cancel the appointment with the psychologist because I strongly believe there are loads of kids out there who have been diagnosed with this 'syndrome' wrongly/uneccessarily (frankly, I'm sceptical it even exists).