Re yawning:
Body-centred countertransference - Wikipedia, the free encyclopedia
The study referred to is here:
http://hse.openrepository.com/hse/bi...redCounter.pdf
I don't think it relates to what you're actually discussing, but to the unconscious signals you might be giving out.
I think his memory loss has started since we came back from the Easter break, but I can't think why now - I don't know if it's because we're better attuned than we were before. Will have to ask him.