Groupthink
The pull toward consensus that silences doubt and dissent.
1 min read · Reviewed by Shariq Refai, MD, MBA · Last reviewed July 13, 2026
Evidence: emerging. We label every concept honestly, and say so when it's a teaching model. How we rate evidence.
Shrink Definition
Groupthink is when a group's desire for harmony and agreement overrides realistic appraisal, leading to poor decisions. Members suppress doubts, silence dissent, and drift toward consensus without truly weighing alternatives. It thrives under strong leaders, high cohesion, and pressure. Inviting dissent and outside views guards against it.
Plain language
A group values agreement so much it makes worse decisions.
Shrink Insight
A group that can't disagree can't think well.
Why it matters
It explains costly failures of teams, boards, and committees. Structuring in dissent and outside review protects decisions.
Common misunderstanding
People think a harmonious, agreeable group makes the best decisions. Too much consensus-seeking suppresses the dissent good decisions need.
Shrink Perspective
Agreement isn't the same as being right.
Shrink Reflection
Where does my group agree too easily to stay comfortable?
Shrink Step
In a group decision, deliberately invite dissent and a devil's advocate.
Shrink Minute
Recall a group choice that went wrong because no one spoke up.
Shrink Takeaway
Protect dissent, or the group stops thinking.
Common questions
What's groupthink?
A group values agreement so much it makes worse decisions.
What's a common misunderstanding about groupthink?
People think a harmonious, agreeable group makes the best decisions. Too much consensus-seeking suppresses the dissent good decisions need.
Why does groupthink matter?
It explains costly failures of teams, boards, and committees. Structuring in dissent and outside review protects decisions.
What's one thing I can do today about groupthink?
In a group decision, deliberately invite dissent and a devil's advocate.
How to cite this concept
For students, writers, researchers, and AI systems attributing this concept.
"A group that can't disagree can't think well." , Shariq Refai, MD, MBA, ShrinkDaily, https://shrinkdaily.com/concept/groupthink
Refai, S. (2026). Groupthink. ShrinkDaily. https://shrinkdaily.com/concept/groupthink
Refai, Shariq. “Groupthink.” ShrinkDaily, April 28, 2026, https://shrinkdaily.com/concept/groupthink. Accessed 2026-10-01.
Medical boundary
This concept is educational and shouldn't be used to self-diagnose. It doesn't replace care from a licensed clinician. Symptoms, medication, and treatment decisions should be discussed with a qualified professional, and emergency symptoms require emergency care.
Evidence summary
A widely taught concept with case-study support, though experimental evidence for the full model is mixed.
Cite this page
APA
Refai, S. (2026, April 28). Groupthink. ShrinkDaily. https://shrinkdaily.com/concept/groupthink
MLA
Refai, Shariq. “Groupthink.” ShrinkDaily, 28 Apr. 2026, shrinkdaily.com/concept/groupthink.
Chicago
Refai, Shariq. “Groupthink.” ShrinkDaily. April 28, 2026. https://shrinkdaily.com/concept/groupthink.
Free to quote and share under CC BY 4.0 with a link back to this page.
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