The laboratory method has institutionalized itself in the larger social
system, and an investigation of how this came about provides an impor
tant case study of social intervention. One of the founders of NTL, whose
subsequent career was totally invested in the movement, describes how
the laboratory method was calculated to meet the needs of the post-World
War II world. Uses of the method's intrinsic "change-agent" concept are
illustrated, and particular aspects of the growth of the movement are
examined. Some unanticipated problems of collaboration and coordina
tion and their solutions during NTL's formative years are described. The
article concludes with a comparison of the societal conditions in which
the psychoanalytic and laboratory movements, respectively, were begun.