Of all the ways groups make bad decisions, false consensus is among the most difficult to detect. Bullying others and dismissing the contributions of some group members are usually obvious when they happen, but by contrast, false consensus is subtle. Even those most affected by it might be unaware.

Harry Morgan and Henry Fonda in The Ox-Bow Incident, a 1943 film directed by William Wellman, starring Fonda and Dana Andrews. The film is based on the novel by Walter Van Tilburg Clark. It tells the story of a lynching in Nevada in 1885, in which an illegally deputized posse of 27 men and one woman hangs three innocent men. At one point in the proceedings, to confirm the posse's nerve, the ringleader calls for a majority vote, asking anyone who favors a court trial to "stand over there." One by one, seven men comply, and although they are overwhelmingly outvoted, we cannot help but feel the shock of the members of the pro-lynching faction as they discover an increasing number of dissenters in their midst. One of the dissenters is the ringleader's son.
This scene illustrates the two components of false consensus. First, it shows the disruptive effects of discovering that anyone would disagree with one's own position. Second, it shows how those who hold the conventional view tend to regard dissenters as defective. Photo courtesy U.S. Library of Congress.
False consensus is a group psychological phenomenon [Ross 1977] [Engelmann 2004] with two components. First, members tend to believe incorrectly that others hold opinions in agreement with their own. Second, members tend to believe that those who disagree do so because of personal defects.
This error of perception is not a personal flaw — it is a universal human trait. Wherever people work in groups or teams, false consensus can happen, more often than any of us would like.
Usually, the errors in estimating what others believe are inconsequential, but when the issue is controversial, errors matter. For instance, when a team chooses between two different strategies, members tend to guess that other members would choose as they would. And they also tend to believe that those who make the opposite choice have serious character flaws or malicious intent.
Here are four situations that present elevated risk of false consensus.
- Contracts
- Contracts usually contain specifically crafted language and terminology, which is inevitably subject to interpretation. Each party to the contract interprets this language in ways that seem to them to be conventional or common sense. And that's where false consensus can arise.
- By including examples and not-examples in contracts, we can reduce the likelihood of false consensus by narrowing the range of ambiguity.
- Requirements
- False consensus can arise in both requirements development and requirements interpretation. Any ambiguity will find people willing to adopt differing interpretations, with many believing that their interpretations are conventional, and that other interpretations are self-serving or perhaps malevolent.
- Terseness, though seemingly elegant, creates risk of false consensus. Specificity, with examples and not-examples, produces better outcomes.
- Organizational agreements
- Agreements Terseness, though seemingly
elegant, creates risk of
false consensusof any kind are fertile ground for false consensus. "We'll postpone that task if you let him work on this task now," is an example. Its ambiguity creates opportunities for false consensus. Postpone for how long? Will he be working full time now? - Make agreements explicit and specific. Write them down in confirming email messages or posts.
- Organizational change
- In organizational change efforts, Management often desires that the Managed accept something the Managed don't actually want. Sometimes, Management encourages false consensus by creating the impression that the majority do actually want the change. It's a tempting tactic, but when people eventually figure out what's happening, trust is broken and Management loses credibility.
- A safer approach: be honest and deal with serious objections seriously.
We probably all share a false consensus about false consensus: it doesn't happen to me or to anyone I know, and those who do fall victim to it are idiots. Top
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Are you fed up with tense, explosive meetings? Are you or a colleague the target of a bully? Destructive conflict can ruin organizations. But if we believe that all conflict is destructive, and that we can somehow eliminate conflict, or that conflict is an enemy of productivity, then we're in conflict with Conflict itself. Read 101 Tips for Managing Conflict to learn how to make peace with conflict and make it an organizational asset. Order Now!
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Footnotes
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Related articles
More articles on Conflict Management:
How to Prepare for Difficult Conversations
- Difficult conversations can be so scary to contemplate that many of us delay them until difficult conversations
become impossible conversations. Here are some tips for preparing for difficult conversations.
Teamwork Myths: Conflict
- For many teams, conflict is uncomfortable or threatening. It's so unpleasant so often that many believe
that all conflict is bad — that it must be avoided, stifled, or at least managed. This is a myth.
Conflict, in its constructive forms, is essential to high performance.
Reframing Hurtful Dismissiveness
- Targets of dismissive remarks often feel that their concerns are being judged as unimportant, which
can be painful when their concerns are real. But there is an alternative to pain. It requires a little
skill and discipline, but it can work.
Toxic Conflict in Virtual Teams: Virtuality
- In virtual teams, toxic conflict sometimes seems to erupt spontaneously. People who function effectively
in co-located teams can find themselves repeatedly embroiled in conflicts that seem to lack specific
causes. What triggers toxic conflict in virtual teams?
Pushing the "Stupid" Button
- Some people know exactly how to lead others to feel ignorant or unintelligent. Here's a little catalog
of tactics to watch for.
See also Conflict Management and Conflict Management for more related articles.
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Beware any resource that speaks of "winning" at workplace politics or "defeating" it. You can benefit or not, but there is no score-keeping, and it isn't a game.
- Wikipedia has a nice article with a list of additional resources
- Some public libraries offer collections. Here's an example from Saskatoon.
- Check my own links collection
- LinkedIn's Office Politics discussion group