Just to note... Neuropsychological testing can actually be a really good measure of brain fog, memory problems, information processing speed, auditory attention etc. It tends to go along with a psych assessment so that any impairments can be put in context of your premorbid estimates, and overall picture. I also would hope that whatever a psychiatric inventory is might act as a final place to identify people with other psych issues, and choose candidates who are ME patients without comorbidities that might muddy the waters. As for dietician.. perhaps it's to also get a picture of people dietary habits and what they may or may not have tried. Since diet seems to help a lot of people, seems reasonable.