English: Groupthink is a psychological phenomenon where the desire for group cohesion and harmony overrides realistic appraisal of alternative courses of action. It leads to irrational decision-making by suppressing dissenting viewpoints.

1. The "Setup": Root Causes

High Group Cohesiveness: Strong bonds make members reluctant to "rock the boat."

Structural Faults: Isolation of the group, lack of impartial leadership, and lack of diverse social backgrounds.

High Stress: External threats or recent failures pressure the group to reach a quick, unanimous consensus.

2. Core Behavioral Symptoms

Illusion of Invulnerability: Excessive optimism and risk-taking.

Self-Censorship: Members suppress their own doubts to avoid conflict.

Pressure on Dissenters: Direct social pressure applied to anyone who questions the group's direction.

Mindguards: Self-appointed members who "protect" the leader from contradictory information.

3. Consequences of Failure

Incomplete Survey of Alternatives: Failure to look at other viable options.

Failure to Examine Risks: Overlooking the potential downsides of the preferred choice.

Poor Information Search: Only seeking out facts that support the group’s existing bias.

4. Management & Prevention

Assign a "Devil’s Advocate": Formally task a member to challenge every assumption.

Leader Neutrality: The leader should remain silent initially to avoid biasing the group.

Subgroup Deliberation: Break into smaller teams to discuss the same issue independently before merging ideas.