Abstract
The Institute for the Development of Human Potential (IDHP) was established in 1976 by David Blagden Marks, John Heron, Tom Feldberg, Frank Lake and Kate Hopkinson. The course has survived for 25 years, essentially unchanged. It anticipated many of the shifts in thinking about organisational culture, that have had a profound influence on our thinking about the use and abuse of power and the nature of authority.
In this special edition of Self and Society we hear from facilitators past and present as well as current and past students. I hope it gives a flavour of this unique diploma.