The PSCI was developed by Dr. Lee Smith and Dr. Jeannine Sandstrom of CoachWorks International, Dallas, Texas USA. It has been used since 1995 by tens of thousands of individuals worldwide and has been translated into several languages. It is the first coaching instrument developed by coaches for the coaching industry. Drs. Smith and Sandstrom saw a need for understanding and mastery of interaction styles from the coaching context. The inventory is not a psychological/personality tool. It is intended to be a self-inventory where people identify how they want to give and receive feedback and advice. It is best used as a snapshot of how individuals can have effective communication in relationships. While similar to other four quadrant styles, it has the distinction of being beneficial to coaches in every industry – from personal coaches, coach managers, executive coaches, or self-coaches.