Berman considers group therapy another avenue of approach toward experimentation, valuable to the psychoanalyst because it provides a means of direct application of his special skills in the study of social psychology. In an original, comparative manner it is pointed out that regular psychoanalysis contains certain elements (such as the extra-analytic evidence of the analyst as a real person in relation to others) which are of central importance in group therapy. It is further stressed that in analysis the growth of the ego permits derivative insight (as in Slavson's activity groups), that the studies of the therapeutic results of psychoanalysis (Glover) cannot neglect education as a factor, and finally that psychoanalysis aims at the acceptance of the analyst as a real person. Berman indicates the need for further research in group therapy with particular emphasis on problems of grouping in relation to the attainment of optimum anxiety levels and transference reactions, the latter occurring in patients toward one another.