My math may be off, but in this schedule provided by @viggster they note procedures where they volunteer associated researchers names 16 times. I am surmising most of the other procedures involve technicians, e.g. MRIs. Of those 16 times, it would appear 8 of those procedures either involve psychiatric processes, or simply involve a psychiatrist, or involve individuals who, in the past, purportedly have gone on record as opining CFS is a psych thing. So, 50% with a potential psych component. Now, to be fair, I'm unclear if the names given are the ones identified earlier as investigators, e.g. Gill and Snow, for instance. But if my speculation is even close to the mark, that's a little disconcerting.