Groupthink
Psychological Concepts
Groupthink
Groupthink, coined by psychologist Irving Janis, occurs when a group prioritizes consensus over critical thinking. Members suppress dissent, ignore alternatives, and make decisions that no individual would make alone—all to maintain harmony and cohesion.
Groupthink has been blamed for major historical disasters: the Bay of Pigs invasion, the Challenger explosion, and countless corporate failures. It happens in families, friend groups, companies, and governments—anywhere people value belonging over truth.
Symptoms of Groupthink
Illusion of Invulnerability: Excessive optimism, ignoring obvious warnings
Collective Rationalization: Dismissing warnings that challenge assumptions
Belief in Inherent Morality: Assuming the group is moral, ignoring ethical consequences
Stereotyping Outsiders: Viewing opponents as evil, weak, or stupid
Pressure on Dissenters: Direct pressure on anyone who argues against the group
Self-Censorship: Members withhold dissent to maintain harmony
Illusion of Unanimity: Silence is interpreted as agreement
Mind Guards: Some members shield the group from dissenting information
Groupthink is especially likely in cohesive groups with directive leadership, isolation from outside opinions, and high stress. The more you like the group, the more vulnerable you are.
Why This Matters
Recognizing groupthink helps you maintain independent thinking even within groups you love. It's possible to belong and still dissent.