The psychodynamic perspective focuses on explaining behavior through unconscious sexual conflicts from childhood. It assumes that early relationships with parents shape personality. Freud's case study of Little Hans showed the boy's sexual attraction to his mother and fear of his father through dreams and behaviors. Thigpen and Cleckley's study of "Eve" found her multiple personalities developed after childhood trauma, supporting the idea that early events influence later personality. Projective tests were used but rely on subjective interpretation. While psychodynamic theory helped further understanding of mental illness, Freud's findings have limited generalizability due to focusing on single case studies within a specific cultural context.