 He was sufficiently impressed by it to make his staff attend the course, and began to think about developing a course of his own.Over the following years, Erhard investigated a wide range of movements, including Encounter, Transactional Analysis, Enlightenment Intensive, Subud and Scientology.In 1970 Erhard became involved in Mind Dynamics and began teaching his own version of Mind Dynamics classes in San Francisco and Los Angeles.