Communicating technological risk

Are we helping people understand the risks, or just trying to talk them into accepting them? The opening describes technology developers who treat risk communication as persuasion: convince the public that the danger is small and can be ignored. That sounds more like public relations than a neutral explanation. But notice whose approach we're hearing about. This is how some developers communicate; we haven't yet been told what the authors recommend.

Their justification is that ordinary people misunderstand risk. The studies they cite describe people ignoring familiar dangers while worrying about unusual, unlikely ones. We can understand the pattern: someone might be careless about an everyday activity but become consumed by a remote disaster. Still, even if people sometimes assess danger badly, does it follow that experts should decide what they ought to accept? The last sentence shows why this approach can backfire. People see it as “brainwashing done by experts.”

“Since, however” introduces a different goal. Risk communication should help people reach well-informed choices (paragraph 2). That changes the job. Give people what they need to decide, rather than arrive with a decision you want them to adopt.

The example involving children helps explain why an expert and an ordinary person might rank risks differently. A small risk imposed on a child may concern someone more than a larger risk a consenting adult accepts in exchange for a benefit. That isn't necessarily a failure to understand the numbers. The person may be considering who faces the danger and whether they chose it. Ethical concerns are part of that person's judgment.

When the task is narrowed to estimating annual deaths, people do quite well. And some studies that supposedly reveal unreasonable fears ask people to compare risks that are hard to compare. Not knowing which of two rare dangers is rarer doesn't automatically mean you misunderstand how dangerous either one is. The power-line study adds positive evidence: with the necessary facts and enough time, people could make informed decisions.

So what should communicators do differently?

Find out what their audience already knows. Paragraph 3 explains why that matters. Someone with no background may not understand the message at all; someone with a mistaken belief may fit the message into that mistaken picture. Imagine telling a prospective student to be cautious about law-school debt when that student assumes every lawyer earns a huge salary. Your warning may sound unreasonable until you address the assumption underneath it. Simply repeating the warning more forcefully won't necessarily help.

The radon study shows how to put this into practice. Researchers first used interviews and questionnaires to find out what people knew, then used that information to prepare a brochure. Its readers understood the risks better than the readers of a government brochure prepared another way. The example supports the recommended preparation; it doesn't establish that government brochures are always bad.

We end with a practical approach: learn what the audience knows and believes, then give it balanced information it can use. The goal is an informed decision, not agreement with the communicator.