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Sigmund Freud, one of Charcot's renowned students, made significant contributions to the field of psychology. Freud developed groundbreaking theories on the unconscious mind, dream analysis, and the structure of the human psyche. His work laid the foundation for psychoanalysis, a therapeutic approach that revolutionized the understanding and treatment of mental disorders. Freud's influence on psychology remains profound, shaping the way we perceive and comprehend the complexities of the human mind.