Thanks a lot for the link. =====================================================================
The Paced Auditory Serial Addition Test (PASAT) is widely used in the evaluation of multiple sclerosis (MS) patients' cognitive performance, and also used as the sole measure of cognition in a recently developed assessment tool for MS clinical trials, the Multiple Sclerosis Functional Composite (MSFC).
At the same time, take this in consideration: "Paced auditory serial addition test (PASAT)- A very difficult test even for individuals with high intellectual capability"
https://core.ac.uk/download/pdf/206516349.pdf=====================================================================
Like I said: references = experiences of people who tried it.
One encounter said that he reached a very high level on dual n back and he said he doesn't feel any more benefits. At the same time he began PASAT task and he found it very difficult and he felt some benefits.
Maybe those 3 encounters is the same guys posting on different forums.