The average size of a psychodrama group is between ten and fifteen people.[...]

There are many societal roles represented in any given group.[...]

We each play a staggering variety of roles in one day: parent, son or daughter, professional, friend, lover, citizen, boss, student, not to mention all the somatic roles such as sleeping, eating, and crying. Separate from the many roles we play in our own lives, we may be asked to play a role for someone else in the group.[...]

This constant change of role structure in a group disallows the role rigidity that may occur in other groups. The role repertoire is expanded by each group member playing a different kind of role from that which s/he may be seen to play in the group. A member of the group with low self esteem may be stretched to play a courageous role, surprising both themselves and the group by the release of creativity hidden, problematic, learned behavior. This glimpse of courage motivates the player to produce more and encourages group members to relate to them in a different way.[...]