+A collective delusion is a widely held, uncritical belief in something false, spontaneously accepted by a large group of people. Often emerging during times of [Social Stress](/wiki/social_stress), it can manifest as irrational [Mass Hysteria](/wiki/mass_hysteria) or widespread acceptance of unfounded claims.
+## See also
+- [Social Contagion](/wiki/social_contagion)
+- [Groupthink](/wiki/groupthink)
+- [Confirmation Bias](/wiki/confirmation_bias)
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