Final answer:
Sigmund Freud is associated with Psychoanalysis and the development of personality theory, focusing on concepts like the unconscious mind, id, ego, and superego. His methods to access the unconscious include dream analysis and free association. He is not connected with Behaviorism, Structuralism, or Humanism.
Step-by-step explanation:
The concepts associated with Sigmund Freud are Psychoanalysis and the development of personality theory which encompasses the id, ego, and superego. Freud's work is pivotal in understanding the unconscious mind's role in shaping conscious behavior and personality. He employed methods like dream analysis, free association, and the examination of slips of the tongue to explore the unconscious. While Freud's ideas have been widely critiqued and adapted, they remain foundational in the field of psychology.
Freud is best known for his formulation of Psychoanalysis, a method and theory to explore and treat the unconscious mind, influencing personality, and behavior. His work, however, is not associated with Behaviorism, Structuralism, or Humanism, which are distinct schools of thought within psychology developed by other scholars.