It appears to be an off-shoot of EMDR and NLP, both of which have some research evidence behind them, but also both of which aren't really new discoveries, but rather new packaging. The basic issues for me are that in controlled studies, EMDR doesn't show results significantly different from CBT and exposure therapies. And doing a cursory search on brainspotting research, there just is very little evidence that doesn't track back to this "Dr" Grand. The few articles that mention brainspotting at all have very few citations outside of the 3-4 co-authors with Grand. That is significant in terms of how "fringe" this topic may be.