Role Playing

Abstract

Role playing is the deliberate enactment of a role — the pattern of conduct expected of a social position — undertaken to change an attitude, rehearse a skill, or explore experience. Role playing, which MeSH classifies under psychodrama, reaches well beyond that clinical origin: Jacob Moreno built psychodrama around enacted role-taking in the 1930s and 1940s, Theodore Sarbin made role the organizing unit of a general social psychology, and Irving Janis and Bert King showed experimentally that improvising a persuasive speech shifts the speaker's own view more than passively hearing the same case. This article traces those roots, sets out the biased-scanning and self-persuasion mechanisms by which enacting a position alters the actor, and surveys the modern use of role playing in psychotherapy, social-skills training, and health-professions education.

Keywords: role playing, psychodrama, role theory, saying-is-believing, behavioral rehearsal

What Role Playing Is

Role playing is the enactment of a role a person does not ordinarily occupy, or occupies differently, carried out for a purpose beyond the enactment itself. The purpose distinguishes it from ordinary acting: an actor performs a role for an audience, whereas a role player enacts one to produce a change — in the player's own attitudes, in a rehearsed competence, or in the understanding of a situation seen from another position. A role, in the technical sense that gives the practice its name, is the pattern of behavior expected of someone holding a given social position, and role enactment is the overt performance of that pattern, which Theodore Sarbin and Vernon Allen treated as the central observable of social psychology (Sarbin & Allen, 1968).

Two features separate the psychological uses of role playing from theatrical performance. The first is that the enactment is instrumental: it is a method, not a product. The second is that its most striking effects fall on the person doing the enacting. Playing a role is not a neutral rehearsal of behavior a person already holds; it tends to move the enactor toward the position enacted, so that the technique is at once a way of practicing conduct and a means of changing the practitioner (Janis & King, 1954).

Demo 1 — Saying Is Believing: Improvisation as the Driver

The attitude change an episode of role playing produces, A, is modeled as a ceiling M = 0.50 times a generation term G = 0.6·I + 0.4·P — the active improvisation I of building arguments, weighted above the involvement P the role commands. Setting I to zero is the passive case, reciting the material without constructing it. Move the inputs and watch the improvised advantage open.

Active improvisation I: 0.70

Personal involvement P: 0.50

G = 0.6×0.70 + 0.4×0.50 = 0.62; A = G × 0.50 = 0.31 — a predicted 31% shift toward the enacted position. Passive exposure at the same involvement yields only 10%, an improvised advantage of 21 points. Because improvisation carries the larger coefficient, removing it collapses most of the effect.

This self-directed effect is what makes role playing a topic in cognitive and social psychology rather than only in drama or pedagogy. When a person argues a case they did not hold, cares for a simulated patient, or takes the part of an assigned authority, the enactment recruits attention, memory, and self-perception in ways that reshape the enactor. The sections below distinguish the mechanisms responsible from the settings that exploit them.

Historical Development

The systematic use of enacted roles entered psychology through Jacob Levy Moreno, a Viennese-trained psychiatrist who, working first with improvisational theater and then with patients, made spontaneous role enactment the core of a therapeutic method he called psychodrama (Moreno, 1946). Moreno held that a person could be helped by enacting, rather than merely narrating, the situations and relationships that troubled them, and that the spontaneity demanded by improvisation was itself curative. He coined the term role playing to distinguish the deliberate, exploratory enactment of his clinics from the fixed roles of ordinary social life, and much of the vocabulary of the field — protagonist, auxiliary, role reversal — descends from his practice.

A second, more theoretical line ran through Theodore Sarbin, who developed role theory into a general framework for social psychology. Sarbin and Allen treated social behavior as role enactment governed by the expectations attached to a position, and introduced the dimension of organismic involvement: the degree to which enacting a role engages the person, ranging from the casual, easily dropped role-taking of everyday courtesy to states of such deep absorption that the boundary between self and role dissolves (Sarbin & Allen, 1968). Role theory supplied the concepts that let the clinical practice be described in the terms of experimental psychology.

The experimental line began in the 1950s at Yale, where Irving Janis and Bert King asked whether the act of advocating a position would change the advocate's own opinion. Their participants either delivered an improvised persuasive talk on an assigned view or passively read the same material aloud; the improvisers shifted their private opinions substantially more (Janis & King, 1954). A follow-up isolated improvisation itself as the active ingredient, ruling out the mere satisfaction of performing (King & Janis, 1956). By the mid-1950s the accumulating studies were substantial enough for a formal review of the experimental literature on role playing as a method (Mann, 1956).

The Mechanism: Biased Scanning and Self-Persuasion

Janis and King's explanation for why improvisation changes the improviser was biased scanning: the effort of building a convincing case forces the speaker to search memory selectively for supporting arguments, illustrations, and concessions, and to rehearse them in the speaker's own words. Self-generated arguments are more available, more tailored to the person's existing knowledge, and more convincing to that person than the identical arguments received passively, so the act of producing them moves the producer (Janis & King, 1954). The isolation study is what makes the account persuasive: when the content was held constant and only the demand to improvise varied, improvisation still carried the effect, which points to the generative act rather than the message as the cause (King & Janis, 1956).

Demo 2 — Organismic Involvement: How Deep the Role Goes

Sarbin's role theory adds a dimension the persuasion studies leave implicit: how far the enactment engages the person. Slide up the ladder of organismic involvement, from casual role-taking that changes little to total absorption in which the boundary between self and role dissolves. Each level recruits more of the enactor and holds the enacted position with more conviction.

Involvement level: 1 of 4 — Casual role-taking

Casual role-taking — everyday courtesy, easily dropped. 1 of four systems engaged; the enacted position is held with about 25% conviction. As involvement rises the role commands more of attention, affect, and physiology.

Biased scanning sits alongside two related accounts of how enacting a counterattitudinal position changes the enactor. One is cognitive dissonance: advocating a view one does not hold creates an uncomfortable inconsistency that is most easily resolved by shifting the private view toward the public act, an effect strongest when external justification for the advocacy is weak. The other is self-perception: a person infers their own attitudes partly by observing their own behavior, so someone who hears themselves argue a case reads that behavior as evidence of belief. The three accounts are not rivals so much as descriptions of the same self-persuasion at different levels — the search process, the motivational tension, and the inference — and role playing engages all of them at once (Mann, 1956).

Sarbin's role theory adds a second dimension that the persuasion studies leave implicit: how deeply the enactment engages the person. Light role-taking changes little, but as organismic involvement rises the role increasingly commands attention, affect, and physiology, and the enacted position is held with correspondingly more conviction (Sarbin & Allen, 1968). The extreme of that dimension is displayed in the Stanford prison study, in which students assigned the roles of guard and prisoner in a simulated jail enacted them with an intensity that overwhelmed the participants' prior dispositions within days, a demonstration — however contested its design — of how far an assigned role can reshape conduct when involvement is total (Haney et al., 1972).

Role Playing in Therapy and Education

The same properties that make role playing a research tool make it an applied one, and its clinical use predates its experimental study. In Moreno's psychodrama and its descendants, patients enact troubling scenes, reverse roles with the people in them, and rehearse alternative responses, on the premise that enactment reaches material that narration does not (Moreno, 1946). A systematic review of the psychodrama outcome literature finds a growing but methodologically uneven body of controlled research, with encouraging effects on a range of problems tempered by small samples and variable rigor (Orkibi & Feniger-Schaal, 2019).

Demo 3 — Behavioral Rehearsal: Practice With and Without Feedback

Social-skills training builds a competence by modeling it, rehearsing it in role play, and refining it through feedback across repeated trials. Model competence as bounded growth toward a ceiling. Structured feedback after each trial raises both the rate of gain and the ceiling reached; bare repetition plateaus early. Toggle feedback and step through the trials.

Trial 8 of 8

With structured feedback, competence at trial 8 is 89%. Feedback pushes the curve toward a higher ceiling; each rehearsal converts more of the described skill into an executable one.

A more circumscribed clinical use is behavioral rehearsal, the core of social-skills training: a target skill is modeled, practiced in role play with a partner, and refined through feedback across repeated trials. A systematic review and meta-analysis of group social-skills interventions for children with autism spectrum disorder found that programs built on this modeling-plus-role-play structure produced measurable gains, illustrating both the method's reach and the modest, skill-specific size of its effects (Wolstencroft et al., 2018). Role play here is not aimed at attitude change but at converting a described competence into an executable one.

Role playing is now most widely used in health-professions education, where learners rehearse clinical communication by taking the parts of clinician and patient, or work with trained simulated patients. A systematic review of peer role play for training communication skills in medical students found it a broadly effective and low-cost method, comparable in several respects to the more resource-intensive simulated-patient approach (Gelis et al., 2020). Guidelines drawn from that practice stress that the benefit depends on structure — clear briefing, a safe rehearsal frame, and disciplined feedback — rather than on the enactment alone (Nestel & Tierney, 2007). Even the learner who only observes a role play gains from it when assigned a defined observer task, which directs the attention that makes the enactment instructive (O'Regan et al., 2016).

Table 1

Four Settings in Which Role Playing Is Used, and the Change Each Targets

Note. The four settings exploit the same self-directed effect for different ends: research and therapy target the enactor's attitudes and experience, whereas training and education target a transferable behavior. The mechanism is shared; the outcome measured differs.

Worked Example

The saying-is-believing effect can be modeled as a bounded quantity to show why improvisation matters more than passive exposure. Let the attitude change an episode of role playing produces, A, on a 0-to-1 scale where 1 is the maximum shift the issue allows, be the product of a ceiling M and a generation term G. The generation term combines two inputs, each scaled 0 to 1: the degree of active improvisation I — how much the enactor constructs arguments rather than reciting them — and the personal involvement P the role commands. Following Janis and King, weight improvisation more heavily, since it is the generative act that biased scanning requires: G = 0.6 I + 0.4 P, and A = G × M, with M = 0.5 to reflect that a single episode moves an attitude part way, not all the way.

Take a participant who improvises actively but with moderate involvement: I = 0.7 and P = 0.5. Then G = (0.6 × 0.7) + (0.4 × 0.5) = 0.42 + 0.20 = 0.62, and A = 0.62 × 0.5 = 0.31, a 31% shift toward the advocated position.

Now hold involvement fixed and raise improvisation to I = 0.9: G = 0.54 + 0.20 = 0.74 and A = 0.37. Compare the passive case, in which the person recites the material without improvising, I = 0: G = 0.40 × 0.5 = 0.20 and A = 0.10. The improvised-minus-passive gap of 0.21 is the model's rendering of the central experimental finding — that improvising a case changes the advocate roughly two to three times as much as passively rehearsing the identical content (King & Janis, 1956). The weighting captures why: because improvisation carries the larger coefficient, removing it collapses most of the effect even when involvement is unchanged.

Discussion

Role playing is unusual among psychological methods in that it was a therapy before it was an experiment and a demonstration before it was a theory. Moreno's clinical practice supplied the technique and its vocabulary; Sarbin's role theory supplied the conceptual frame; the Janis-King experiments supplied the controlled evidence that enactment changes the enactor and a mechanism, biased scanning, to explain it. The convergence is what gives the field its coherence: the improvised speech in a laboratory and the enacted scene in a psychodrama group are the same process working on the same person, differing in involvement and aim rather than in kind.

What the research establishes most firmly is the direction of the surprising effect. Common sense treats acting a part as a performance that leaves the actor untouched; the experimental literature shows the reverse, that the private view follows the public enactment, and that it does so most when the enactment is self-generated rather than scripted. This is the durable core, replicated across the attitude-change studies and consistent with the dissonance and self-perception accounts that later formalized it. It is also the basis of the applied methods, since behavioral rehearsal and communication training rely on the same principle that enacting a competence begins to install it.

The boundaries are equally important. The extreme role-adoption demonstrations, of which the Stanford prison study is the most cited, show how powerfully an assigned role can override disposition, but their design and interpretation are contested, and they should be read as vivid illustrations of the involvement dimension rather than as controlled estimates of its size (Haney et al., 1972). In the applied literature the effects are real but modest and skill-specific, and they depend on structure — briefing, safety, and feedback — more than on the enactment itself (Nestel & Tierney, 2007). Role playing changes the player reliably, but by a bounded amount, and only when the enactment is designed to engage the processes that do the work.

Current Directions

The most active applied research treats role playing as an educational technology to be optimized rather than a technique to be justified. Reviews now compare peer role play against simulated-patient and other formats on cost and effect, asking not whether enactment teaches but which configuration teaches most efficiently, a question that matters as communication training scales across the health professions (Gelis et al., 2020). A related strand examines the observer: evidence that a learner with a defined observation task gains as much as an active participant is reshaping how role-play sessions are staffed and structured (O'Regan et al., 2016).

On the clinical side the priority is methodological. Psychodrama and behavioral role play carry decades of practice and encouraging results, but the outcome literature remains thinner and less rigorous than the reach of the methods would warrant, and current reviews call explicitly for larger, better-controlled trials to convert clinical confidence into evidence (Orkibi & Feniger-Schaal, 2019; Wolstencroft et al., 2018). How the growth of digital and virtual environments will change enactment — whether a role played through an avatar recruits the same biased scanning and involvement as one played face to face — is an open question the field is only beginning to address.

Common Misconceptions

Role playing is just acting, so it leaves the person unchanged.

The defining psychological finding is the opposite: enacting a position shifts the enactor's own attitude toward it, most strongly when the enactment is improvised rather than scripted (Janis & King, 1954; King & Janis, 1956).

Role playing and psychodrama are the same thing.

Psychodrama is one clinical method that uses enacted roles; role playing is the broader technique, applied also in attitude research, social-skills training, and professional education (Moreno, 1946; Gelis et al., 2020).

The Stanford prison study proves how strong role effects are.

It vividly illustrates deep role involvement but is a contested demonstration, not a controlled measurement; the reliable estimates of how enactment changes people come from the attitude-change experiments (Haney et al., 1972; Mann, 1956).

Glossary

Behavioral rehearsal.

The practice, central to social-skills training, of enacting a target skill in role play with a partner and refining it through modeling and feedback across repeated trials.

Biased scanning.

Janis and King's account of self-persuasion: constructing a persuasive case forces a selective search of memory for supporting material, and the self-generated arguments move the person who produced them.

Cognitive dissonance.

The discomfort of holding a private view at odds with a public act, one route by which advocating a counterattitudinal position shifts the advocate's own attitude, strongest when external justification is weak.

Improvised role playing.

Enactment in which the person constructs the performance rather than reciting a script; the active ingredient that makes role playing change the enactor's opinions.

Organismic involvement.

Sarbin's dimension for how deeply a role engages the person, from casual role-taking to total absorption in which the distinction between self and role dissolves.

Protagonist.

In psychodrama, the group member whose situation is enacted, around whom the scene is built and who reverses roles with the auxiliaries portraying the other figures in it.

Psychodrama.

The therapeutic method Moreno built around spontaneous role enactment, in which patients act out and reverse the roles in troubling situations rather than only narrating them.

Role enactment.

The overt performance of a role; in Sarbin's framework the central observable of social psychology, varying in aptness, intensity, and organismic involvement.

Role reversal.

A psychodramatic technique in which a person enacts the role of another in their situation, adopting that other's position in order to see the scene from it.

Role theory.

Sarbin and Allen's framework treating social behavior as the enactment of roles governed by position-based expectations, supplying the concepts that link the clinical practice to experimental psychology. A role is the pattern of behavior expected of a given social position.

Saying-is-believing effect.

The finding that producing a persuasive message for an assigned position shifts the producer's own attitude toward it, above the effect of receiving the same message passively.

Self-perception.

The account by which a person infers their own attitudes partly from observing their own behavior, so that hearing oneself argue a case is read as evidence of belief in it.

Simulated patient.

A person trained to portray a patient's history and presentation consistently so that learners can rehearse clinical encounters; the resource-intensive counterpart to peer role play in health-professions education.

Spontaneity.

In Moreno's theory, the readiness to respond adequately to a new situation or freshly to an old one; the capacity that improvised enactment exercises and that he held to be curative.

Key Researchers

Irving L. Janis (1918-1990). Yale research psychologist who, with Bert King, ran the experiments establishing that improvised role playing changes the improviser's own opinions, and proposed biased scanning as the mechanism. Wikipedia - Wikidata

Jacob L. Moreno (1889-1974). Psychiatrist who invented psychodrama and sociometry, coined the term role playing, and made spontaneous role enactment the basis of a therapeutic method. Wikipedia - Wikidata

Debra Nestel (living). Professor of healthcare simulation at Monash University and the University of Melbourne whose research established evidence-based guidelines for role play and simulated-patient methodology in health-professions education. ORCID - Faculty Page

Theodore R. Sarbin (1911-2005). Psychologist known as the architect of role theory, who made role enactment and its organismic involvement the organizing concepts of a general social psychology. Wikipedia - Wikidata

Jill Thistlethwaite (living). Health-professions education researcher at the University of Technology Sydney whose work on interprofessional learning and simulated patients grounds the modern use of role play in clinical communication training. ORCID - Faculty Page

Philip G. Zimbardo (1933-2024). Stanford social psychologist who led the Stanford Prison Experiment, the most cited demonstration of how rapidly an assigned role can reshape behavior when involvement is total. Wikipedia - Wikidata

Frequently Asked Questions

What is role playing in psychology? Role playing is the deliberate enactment of a role a person does not ordinarily occupy, carried out to change an attitude, rehearse a skill, or explore a situation. Its distinctive feature is that the effect falls on the enactor: playing a role tends to move the player toward the position enacted (Janis & King, 1954).

Who invented role playing? The therapeutic use and the term itself come from Jacob Moreno, who built psychodrama around spontaneous role enactment in the 1930s and 1940s. The experimental study of how enactment changes the enactor began at Yale with Irving Janis and Bert King in the 1950s (Moreno, 1946).

How does playing a role change a person's attitude? By biased scanning: constructing a persuasive case for the role forces a selective search of memory for supporting arguments, and self-generated arguments are more convincing to the person who produces them than the same points received passively (Janis & King, 1954; King & Janis, 1956).

What is role theory? Role theory, developed by Theodore Sarbin and Vernon Allen, treats social behavior as the enactment of roles governed by the expectations attached to a social position. It introduced organismic involvement, the dimension describing how deeply a role engages the person (Sarbin & Allen, 1968).

What is the difference between role playing and psychodrama? Psychodrama is a specific clinical method that uses enacted roles for therapeutic ends. Role playing is the wider technique, used also in attitude-change research, social-skills training, and professional education. Psychodrama is one application of role playing rather than a synonym for it (Moreno, 1946).

Is role playing effective in therapy? A systematic review of psychodrama research reports a growing body of controlled studies with encouraging effects across several problems, though it is limited by small samples and uneven methodology and calls for larger, better-controlled trials (Orkibi & Feniger-Schaal, 2019).

How is role playing used to teach communication skills? Learners rehearse clinical encounters by taking the parts of clinician and patient or working with trained simulated patients. Peer role play is broadly effective and low cost, and the benefit depends on structured briefing and feedback rather than on the enactment alone (Gelis et al., 2020; Nestel & Tierney, 2007).

Was the Stanford Prison Experiment a study of role playing? It was a demonstration of extreme role adoption: students assigned the roles of guard and prisoner enacted them with an intensity that overwhelmed their prior dispositions. It illustrates deep role involvement vividly but is a contested demonstration rather than a controlled measurement of role effects (Haney et al., 1972).

References