He was subsequently profoundly affected by his experiences at the Northfield Military Hospital . From this came his method of Group-Analytic psychotherapy. A full account of this great synthesis was to remain forever just out of his reach. It is possible to study Foulkes' early struggle with this synthesis in a work on Group-Analytic psychotherapy published in 1940 . This was written rapidly and captures Foulkes' excitement following his years at Northfield.
Group analysis is the analysis of the group by the group including the conductor.
Foulkes papers and book chapters are also disconcerting in that they often end abruptly without prior notice, rather like some of Mozart's piano concerto movements. Foulkes had in fact assembled notes for a theoretical book, but died before attempting to consolidate them. He was never able to make a definitive theoretical statement. It also seems to have been beyond his followers although some interesting and worthwhile literature has emerged over the past 10 years. Much of this work has been shepherded by Malcolm Pines through his editorship of the International Library of Group Psychotherapy.