For what it's worth, both parent questionnaires and teacher reports showed a high level of anxiety in my DD11 (who has ASD), and her self-reports showed none at all. She is bewildered by the idea that we think she is anxious, just because she does things like develop a stomachache and have to be picked up early from her first school dance.
Thanks, this is what I'm thinking is going on, probably. DS' anxiety manifests in somatic ways, also, along with withdrawal and refusal to communicate. I didn't do a report but the teacher data on BASC indicates Hot Mess (last spring, he is much more stable presently).