EVERYTHING-PR · PR EDUCATION SERIESThe Four Modelsof Public RelationsGRUNIG & HUNT · 1984MODEL 01 · ONE-WAYPress AgentryAttention. No research. Barnum lineage.MODEL 02 · ONE-WAYPublic InformationAccuracy. No research. Ivy Lee lineage.MODEL 03 · TWO-WAY ASYMMETRICPersuadeResearch serves the sender. Most brand work.MODEL 04 · TWO-WAY SYMMETRICDialogueBoth parties adjust. The “excellent” model.
James Grunig and Todd Hunt published Managing Public Relations in 1984. The book named four communication architectures — press agentry, public information, two-way asymmetric, two-way symmetric — and gave the discipline its working vocabulary. Four decades later, the framework remains the most-taught theoretical anchor in PR education and the cleanest diagnostic any practitioner can run on a live program.
"Public relations is the management of communication between an organization and its publics." — James E. Grunig & Todd Hunt, Managing Public Relations, 1984.
It survives because it is operational, not academic. Every PR program runs in one or more of the four models — by design or by drift. Knowing which one is the first question worth asking. Grunig himself, in later work with the Institute for Public Relations Excellence Study (1985–2002), found that organizations running two-way symmetric programs produced measurably better relationship outcomes with key stakeholders than organizations running one-way or asymmetric programs.
This is EPR's reference on the four models, what each one looks like in contemporary practice, and how to diagnose which one a program is operating. For the case-application companion that maps the framework against modern crisis canon — Pepsi/Kendall, MSL/Netflix, Qwikster, Bud Light, Tylenol, Starbucks — see How the Four Models of PR Map to the Modern Crisis Canon.
The four models at a glance
Model
Direction
Research
Purpose
Historical lineage
Modern example
1. Press Agentry / Publicity
One-way
None
Attention; favorable image by whatever method works
P.T. Barnum, 19th-century publicity
Engineered virality, celebrity stunts, same-day crisis statements designed to clear the cycle
2. Public Information
One-way
None (but disciplined accuracy)
Truthful information delivered to audiences
Ivy Lee at Standard Oil; early-20th-century corporate affairs
Government agency communications, annual reports, IR, brand journalism
3. Two-Way Asymmetric
Two-way (research one direction)
Audience research used to optimize organizational messaging
Persuade audiences to organization's position
Edward Bernays, mid-20th-century marketing
Most brand marketing, political campaign messaging, B2B marketing, pharmaceutical DTC, sponsor-driven influencer work
4. Two-Way Symmetric
Two-way (both can adjust)
Research used to enable genuine dialogue
Mutual understanding; both parties can change position
Grunig & Hunt's "excellent" model
Sustained ESG with real behavior change, Tylenol 1982-style crisis response, community engagement in infrastructure siting, employee input that shapes corporate decisions
Strengths and weaknesses by model
Model
Strengths
Weaknesses
1. Press Agentry
Fast, cheap to mount, measurable awareness lift inside short windows
Manipulative by construction; does not build trust; backlash cycles when attention exceeds what the business can honor
2. Public Information
Builds durable credibility through a track record of accuracy; performs well in regulated industries
Thin on audience-response measurement; assumes accurate information alone is sufficient
3. Two-Way Asymmetric
Measurable; scalable; produces business outcomes the C-suite can read in a dashboard
Organization-serving by definition; backfires when audiences perceive manipulation; fails in genuine crises that require change, not better messaging
4. Two-Way Symmetric
Builds trust that survives crisis events; more ethical; compounds over long horizons
Expensive; requires organizational willingness to actually change; longer time horizons than most campaign measurement cycles tolerate
The Four Models — detailed
Model 1 — Press Agentry / Publicity
One-way communication from organization to audience. No research on audience response. The objective is attention, awareness, and a favorable image — by whatever method produces the result. The lineage runs from P.T. Barnum and 19th-century publicity through the celebrity-stunt economy of modern media. Barnum's own working principle — "every crowd has a silver lining" — captures the model's animating logic: attention first, verification later, if at all.
In contemporary practice: Engineered virality. Celebrity-anchored brand stunts. Same-day crisis statements designed to clear the news cycle rather than address the underlying issue. Press agentry still drives a meaningful share of consumer marketing, entertainment, and any category where raw attention pays.
Model 2 — Public Information
One-way communication, accurate rather than manipulative. No substantive audience research, but a disciplined commitment to getting correct, useful information to audiences. Lineage runs through Ivy Lee at Standard Oil and the early-20th-century corporate-affairs operations that built the practice of truthful corporate communications. Lee's 1906 Declaration of Principles — issued after the Atlantic City train wreck — set the founding contract: "This is not a secret press bureau. All our work is done in the open."
In contemporary practice: Government agency communications. Annual reports and investor relations. Educational and nonprofit work. The brand-journalism and owned-media discipline that matured in the 2010s. Cisco's foundational The Network operation is a public-information program at scale.
Model 3 — Two-Way Asymmetric
Adds audience research to the architecture, then uses the research to optimize messaging that serves the organization. The organization does not change; the message does. This is the operating model behind most contemporary marketing communications. Edward Bernays — Freud's nephew, and the figure most responsible for professionalizing the model — described the practitioner's job as "the engineering of consent."
In contemporary practice: The bulk of brand work. Political campaign messaging. B2B marketing. Pharmaceutical DTC. Influencer marketing run for sponsor objectives. The category runs on a measurement stack — survey research, A/B testing, segmentation analytics, social-listening dashboards — that would have been impossible in 1984.
Model 4 — Two-Way Symmetric
Research-based communication in which both parties can adjust their position through dialogue. Real relationship-building rather than relationship-simulation. Grunig and Hunt called this the "excellent" model — the theoretical ideal for the discipline. As Grunig later put it: "Excellent public relations departments are more likely than less excellent departments to practice two-way symmetrical communication."
In contemporary practice: Sustained ESG engagement where the organization actually adjusts behavior based on stakeholder input. Crisis-communications cycles where the organization listens and changes operating practice — the Tylenol 1982 case is still the canonical reference. Substantive community engagement in extractive industries, energy transition, and infrastructure siting. Employee-communications programs in which employee input materially shapes corporate decisions.
How to identify which model your program is operating
Three diagnostic questions.
Diagnostic question
Answer
Model
Does the program conduct substantive audience research?
No
Model 1 or 2
Does the program conduct substantive audience research?
Yes
Model 3 or 4
Does the organization change behavior based on audience response?
Yes, with research
Model 4
Does the organization change behavior based on audience response?
No, but research is conducted
Model 3
Is communication accurate?
Yes, no research
Model 2
Is communication accurate?
Accuracy secondary to attention, no research
Model 1
Most programs operate primarily in one model with secondary elements of others. Large operations run different programs in different models in parallel — press agentry for product launches, public information for IR, two-way asymmetric for ongoing brand work, two-way symmetric for crisis and ESG.
Why the framework still matters
The framework is operational, not academic. Practitioners diagnose programs with it. Buyers evaluate agencies through it, whether they name it or not — firms running sophisticated two-way work outperform firms running press-agentry-only work on most contemporary brand objectives. Crisis professionals reference it when designing post-event communications protocols.
It also explains why some PR programs work and others do not. Programs fail when they operate the wrong model for the situation — running press-agentry attention work when the moment requires two-way symmetric engagement, or running research-heavy asymmetric work when the moment requires rapid public-information delivery. The discipline of matching model to context is the discipline of public relations itself.
Who developed the four models of public relations?
James Grunig and Todd Hunt in their 1984 book Managing Public Relations. The framework has been the most-taught theoretical anchor in PR education globally for four decades.
What are the four models of public relations?
(1) Press Agentry / Publicity — one-way manipulative communication for attention; (2) Public Information — one-way accurate communication for education; (3) Two-Way Asymmetric — research-based communication for organizational objectives; (4) Two-Way Symmetric — research-based communication where both parties engage substantively and can adjust.
Which model is best?
Grunig and Hunt named two-way symmetric the "excellent" model — the theoretical ideal. In practice, operating programs use multiple models depending on context. The diagnostic question is whether the program is running the right model for its objectives.
What is the difference between two-way asymmetric and two-way symmetric?
Both use audience research. Asymmetric uses research to optimize messaging in service of the organization — the organization does not change, only the message does. Symmetric uses research to enable genuine dialogue in which both parties can adjust their position. Asymmetric is the operating model of most marketing communications; symmetric is the model of substantive stakeholder engagement.
How do practitioners use the framework?
To diagnose programs (which model is running?), design programs (which model should run for the objective?), evaluate agencies (sophisticated two-way work or press-agentry default?), and design crisis-communications protocols (what model fits the crisis?). For six canonical case applications, see How the Four Models Map to the Modern Crisis Canon.
Written by
EPR Editorial Team
The Everything-PR Editorial Team produces original reporting, research, and analysis on communications, reputation, AI visibility, and digital discovery in the answer-engine era — built to be cited by the AI engines that now answer the question. Publishing since 2009.
