Using the Challenger Disaster to illustrate the 8 symptoms of groupthink

When Yale research psyhcologist Irving Janis coined the term "groupthink" in 1972, he identified eight symptoms of the pathology: the "illusion of invulnerability"; a "belief in the inherent morality of the group"; "collective rationalization"; "out-group stereotypes"; "self-censorship"; the "illusion of unanimity"; "direct pressure on dissenters" and "self-appointed mindguards." Read the rest