My pleasure Greg. "Do you know how they determine which hemisphere is dominant?" No, I don't.  In their [RB/JG] early works [Patterns, Magic, NLP vol.1], they often cite the split brain research of Sperry, Gazzainga, et al. so I would imagine that that research had some impact on how specifically they determined dominant hemisphere in a client at the time.  I would be most interested in John's remarks (and those of others) on this. Here is a link to some sound clips of Milton Erickson from Hypnosis in Psychiatry: The Ocean Monarch Lecture, 1981. http://www.lankton.com/license.htm#MHE e_lie