The cold, authoritarian head nurse who maintains strict control over the ward through fear and passive-aggressive tactics. Her oppressive rules and harsh punishment of Billy Bibbit trigger the final confrontation that destroys her authority.
Constant power struggle between McMurphy's rebellion and Ratched's authority
Ratched psychologically controls Billy using his fear of his mother
Ratched holds authority over the medical staff including Dr. Spivey
Chief observes Ratched's mechanical control over the ward.
Ratched oppresses Chief by treating him as deaf and mute
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