Dr. Roger Callahan
In the early 1980’s, Dr. Roger Callahan, American psychologist at Stanford University, called his “tapping” treatment TFT or “Thought Field Therapy”.
He theorized that when a person thinks about an experience or about a thought associated with an emotional problem, they are tuning into a “thought field.” Callahan maintained that perturbations (precise, aberrant- encoded information) in the thought field are the root cause of negative emotions and that each perturbation corresponds to a meridian point on the body.
In order to eliminate the emotional upset, Callahan says that a precise sequence of meridian points had to be tapped. He posited that tapping unblocked or balanced the flow of energy. (e.g. qi, chi) and could can relieve a wide variety of psychological issues, including post traumatic stress disorder, depression, anxiety, addiction, and phobia.
Gary Craig developed EFT, the Emotional Freedom Technique, in the early 1990’s based on Dr. Roger Callahan’s TFT technique which he had learned from Dr. Callahan. A professional engineer, Mr. Craig took what he learned from Dr. Callahan and distilled it into what he felt was a simpler process. His success rate with EFT is claimed to be close to 100% by having the client get more specific about issues being treated as they are being tapped on.