ThinkCritical.eu · Manipulation atlas
Group decisionsGroupthink
The wish for agreement and a good mood in the group drowns out critical review and inconvenient facts.
The more close-knit and confident a group is, the easier it becomes for people to keep their doubts to themselves. Nobody wants to spoil the mood or look like they're holding things up – and the group approves a plan that each member privately doubted. The psychologist Irving Janis described it in the 1970s.
A club committee is planning a summer festival. The chair is enthusiastic, everyone nods, and nobody asks what happens if it rains. After the meeting it turns out that three of the seven members had the same worry – they just didn't want to say it out loud.
How to spot it
- The decision is made quickly and “unanimously”, without a single objection.
- Doubts are brushed off with “let's not be negative” or “we believe in this”.
- Nobody opens the inconvenient documents, and nobody talks about them.
- People only speak up after the meeting – in the corridor or in private messages.
How to check and what to do
- Appoint someone to look for weak spots on purpose (devil's advocate), and rotate the role.
- Run a short pre-mortem: imagine the plan has failed a year from now, and have everyone write down why.
- Collect opinions in writing or anonymously before the leadership's view is heard.
- Before closing, ask “What's the weakest part of this plan?” – and wait for an answer.
Tip: Silence doesn't mean agreement. Someone who didn't speak may simply not have had the chance.
Full explanation and exercises:
thinkcritical.eu/en/manipulation-atlas/groupthink