The Projective Differential was developed over 35 years ago by Dr. Peter A. Raynolds as a part of his doctoral research at UCLA’s Graduate School of Management. Since its creation, the PD has been used, studied and refined in a number of settings around the world, including academic research, organizational consulting, and individual coaching. Seven doctoral dissertations and numerous projects in management and marketing have employed the PD.
Dr. A. Scott McCulloch is the energy behind current development efforts, including updating the systems and processes to take advantage of current information and internet technology, and increasing awareness of this powerful technique in the business consulting, life coaching, and therapy fields. Scott founded Tapintu, LLC to provide consulting and coaching services using the PD as the foundation of the PD Insights™ process, and to train and certify other coaches and consultants in its use.