Richard Bandler's books have sold more than a half a million copies worldwide. Tens of thousands of people, many of them therapists, have studied his blend of hypnosis, linguistics and precise thinking in the United States, Europe, and Australia. Bandler is the author of Trance-formation, "Using Your Brain-for a Change, Time for a Change", "Magic in Action, "and" the Structure of Magic". He coauthored "Frogs into Princes, " "Persuasion Engineering", "The Structure of Magic II", and "Magic in Practice". Grinder is a communication specialist whose background includes a degree in linguistics and development of a communication model for psychotherapy which has revolutionized the field. He has studied the best communicators in many fields, including management, and developed techniques to make their effectiveness learnable. A highly entertaining speaker, he has given workshops around the world to executives, lawyers, salespeople and therapists.