1.  Former USA President Bill Clinton:

Taibi Kahler is a genius.  He knows more about personality dynamics than anyone I know in the world. A good friend and helpful adviser…  there are many out there who would benefit from his expertise.

2. General Wesley K. Clark, U.S., Army Commander in Chief of NATO and European Forces (ret.):

As an interested observer and sometime participant in the field, it seems to me that you offer promise of far greater utility than Myers-Briggs or any other personality assessment instrument I have seen.

3. Terence McGuire, M.D., Lead Psychiatrist for Manned Space Flight, NASA, 1959-1996:

I have known a number of “professional giants” in the fields of behavioural science and medicine, including Nobel Prize winners. But I am most grateful for what I have learned from my continued contact with Taibi Kahler. His Process
Therapy Model revolutionizes how we understand, diagnose, and treat people in psychotherapy. His model is extremely valuable for predicting behaviour.