Which of the following is NOT listed as one of the five primary instruments used in Moreno's psychodrama?

• A. The audience
• B. The thermostat
• C. The stage
• D. The client/protagonist

Answer: (B)

In Moreno's psychodrama, five primary instruments guide the experiential process: the stage, the protagonist, the auxiliary ego, the director, and the audience. The stage provides the physical space for enactment, the protagonist is the client whose issue is explored through dramatic action, the auxiliary ego are participants who take on roles to illuminate relationships and dynamics, the director guides the scene and applies techniques like doubling and role reversal, and the audience can participate as auxiliaries or reflect on what unfolds. The thermostat isn’t part of this framework because it doesn’t serve a role in creating or guiding the psychodramatic action or the interpersonal exploration that these instruments are designed to facilitate; it’s simply a physical device unrelated to the therapeutic process.