Risk Communication and Crisis Communication Models and Principles

Quick Answer: Risk and crisis communication are related but distinct disciplines. NBPHE task 6 asks candidates to use risk communication models and principles for public health issues, emergencies, crises, and disasters. The highest-yield frameworks are the CDC's Crisis and Emergency Risk Communication (CERC) lifecycle, Peter Sandman's hazard-plus-outrage risk perception formula, and the core principles of being first, being right, and being credible.

Risk Communication Versus Crisis Communication

Risk communication addresses potential harm before or while it unfolds; crisis communication addresses an event that is actively harming people or institutions. The two overlap but follow different timeliness and tone. A measles outbreak briefing for worried parents is risk communication; a same-day press conference after a chemical plant explosion is crisis communication. The exam may blur the line, so candidates should know the distinguishing features:

Peter Sandman: Risk = Hazard + Outrage

Peter Sandman's risk perception formula holds that perceived risk equals technical hazard plus public outrage. Hazard is the objective magnitude of harm (fatalities, dose, probability). Outrage is the social and emotional response — dread, distrust, involuntariness, unfairness, familiarity. A low-hazard, high-outrage issue (cell-phone tower siting) generates more public attention than a high-hazard, low-outrage issue (radon in homes). Public health communicators reduce outrage by acknowledging it, sharing control, and being transparent — not by citing hazard statistics alone, which often increases outrage.

Outrage factors that amplify public concern include: involuntary exposure, uncontrolled release, dread of catastrophic outcome, unfair distribution of risk, unfamiliar or exotic technology, hidden or delayed effects, and distrust of the responsible institution. A classic exam scenario pairs a low-hazard, high-outrage problem with a communicator who tries to "calm people down" with numbers — the correct response is to acknowledge concerns and share process control, not to recite risk comparisons.

The CDC CERC Framework

The CDC's Crisis and Emergency Risk Communication (CERC) manual is the most tested crisis framework on CPH. CERC integrates risk communication with crisis communication and is built around six principles and a five-stage lifecycle.

The six CERC principles:

1. Be first. The first source often becomes the most trusted; delaying lets rumor fill the vacuum.
2. Be right. Provide accurate information; acknowledge uncertainty rather than guessing.
3. Be credible. Honesty and transparency build trust; spin destroys it.
4. Express empathy. Acknowledge suffering and fear before giving instructions; people cannot hear facts while in high emotion.
5. Promote action. Give people something concrete to do; action reduces anxiety and restores agency.
6. Show respect. Respect the audience's intelligence, culture, and autonomy.

The CERC lifecycle has five phases:

• Pre-crisis: planning, message mapping, spokesperson training, and relationship-building with partners and media.
• Initial event: rapid notification, first statements, and rumor management.
• Maintenance: ongoing updates as the event evolves, including what is known, what is unknown, and what is being done.
• Resolution: standing down, transition to recovery messaging, and updates on corrective actions.
• Evaluation: after-action review of what worked and what failed, feeding back into pre-crisis planning.

A common exam trap is conflating the six CERC principles with the five lifecycle phases. Candidates should keep them separate: principles are behavioral commitments (be first, express empathy); phases are time periods (pre-crisis, maintenance).

Message Mapping in Emergencies

Message mapping is a structured technique for crisis communication. For each anticipated question, a communicator drafts a single core message (the "top line") and three supporting points. The map ensures consistency across spokespersons and channels. A strong message map leads with empathy, states one key fact, gives one action item, and repeats the core message to reinforce retention. The 27/9/3 rule — 27 words, 9 seconds, 3 messages — is a common concision benchmark the exam may reference.

Core Crisis Principles the Exam Tests

• Acknowledge uncertainty early. Saying "here is what we know and here is what we are still investigating" is correct; waiting for full certainty is not.
• Avoid reassurances you cannot guarantee. "The water is safe" before test results return is a credibility-destroying error.
• Coordinate across agencies. Conflicting messages from different agencies (e.g., EPA vs. state health department) amplify public distrust; joint information centers (JICs) solve this.
• Use trusted messengers. In some communities, a faith leader, community health worker, or tribal elder carries more credibility than an official spokesperson.
• Reach marginalized groups first, not last. Disasters magnify inequities; communicators must proactively reach LEP, low-literacy, and historically excluded populations.

Exam Traps and Common Errors

• Treating risk and crisis communication as identical. The exam distinguishes them by timing, goal, and tone.
• Choosing hazard-only responses to outrage-driven concerns. Outrage requires process and empathy, not just statistics.
• Skipping the pre-crisis phase. A plan that exists only during the acute phase is incomplete; CERC requires pre-crisis preparation.
• Confusing the six CERC principles with the five lifecycle phases. Both are testable; keep principles (be first, express empathy) and phases (pre-crisis, maintenance) separate.