Participation in group psychotherapy encourages social contact of members outside the sessions. Group psychotherapy also leads to acting out rather than verbal expressions of drives and conflicts. When the acting out takes the guise of social meeting, however rationalized, outside the sessions, its therapeutic value is largely nullified. Therefore the therapist forbids social contacts among members of the group too new to make interpretations, and interprets their meaning to the older members participating usually, but not always, in individual interviews that accompany group therapy.