Taibi Kahler (born 1943) is a psychologist, author, and presidential communications advisor. He added the concepts of the Miniscript and Drivers to Transactional analysis theory and developed them into the 'Process Therapy Model' (PTM) and the 'Process Communication Model' (PCM) of human personality and communication. PTM / PCM theory was used at NASA to vet astronaut candidates for the shuttle programme and Bill Clinton used it to tailor his political speeches. PCM is currently applied to corporate management, interpersonal communications, education, and real-time analysis of call centre interactions.
Kahler developed the Personality Pattern Inventory (PPI) which has been used to profile over 800,000 people worldwide and, in 1977, received the Eric Berne Memorial Scientific Award from the International Transactional Analysis Association. Applying Kahler's theories to the field of communications, he argues that any population can be divided into six different personality types (denoted thinker, harmoniser, persister, rebel, imaginer, promoter) and that by modifying one's own communication style and technique according to the personalities of those listening, one may become a much more effective and successful communicator.
- The Mastery of Management (2006), ISBN 978-0970118523
- The Process Therapy Model: The Six Personality Types with Adaptations (2008), ISBN 978-0981656502
- Transactional analysis revisited (1978), Little Rock, AR: Human Development Publications
- Process therapy in brief: the clinical application of miniscript (1979), Little Rock, Ark, Human Development Publications
- NoTAtions: A guide to TA literature (1978), with Brown, M. Dexter, Mich: Huron Valley Institute