Calvin D. Banyan is the CEO and Supervising Hypnotist at The Banyan Hypnosis Center, Inc.,in Tustin, California. At The Banyan Hypnosis Center, Inc., he has conducted thousands of hypnosis sessions and supervised hypnotists who have conducted thousands more. His is one of the fastest growing practices and schools in the country. Holding both Bachelors (Summa Cum Laude) and Masters degrees in Psychology from the University of North Dakota, as well as publishing in the professional journals of the American Psychological Association and the American Psychiatric Association demonstrates his strong academic background which he brings to the practice of hypnosis. This is balanced with practical experience having worked in both private and government mental health facilities. The result is that Cal writes about a practical approach to doing hypnosis.

Gerald F. Kein is the director of the Omni Hypnosis Training Center in DeLand, Florida, where he maintains a highly successful hypnosis practice and professional training center. Having trained thousands of hypnotists nationally and internationally in over thirty countries, he is widely recognized as one of this country's leading instructors of clinical hypnotism. A graduate of Rollins College, Winter Park, Florida, Jerry holds a degree in education. He serves as Executive Director of the Florida Society of Professional Hypnotists. He is Vice President of Chapter 104 of the National Federation of Hypnotists and is active in legislative protection and creation around the country. He is also a contributing author to The Journal of Hypnotism, serves on the Advisory Board of the National Guild of Hypnotists and on the Certification Board of the National Guild of Hypnotists.