I really don't understand the executive functions as it relates to MS. I did a google search to see if I could come up with something.
"Common executive abilities include judgment, problem solving, decision making, planning, and social conduct, and depend upon many of our cognitive abilities such as attention, perception, memory, and language."
http://www.medicalnewstoday.com/articles/13418.php
Most of what I found had to do with ADD.
For me, I have very little visual memory. So doing some of these tests online (visually) is harder for me than doing them in person (auditory memory).
Does that help answer your question Lady?