The authors promote the position that the benefits tend to exceed the pitfalls of dual facilitation of intense small group experience and should become a more standard feature of laboratory training, for reasons of new trainer development, better learning experience for participants, and continuing skill development of experienced trainers. (AJ)

In the first of a three-part series, the authors examine the origin of the organizational development movement, instrumented team learning seminars for managers, their experimental programs for industry at various locations, the development of the "managerial grid," management by objectives, behavior modification, and other approaches to…