6. To develop his theory about personality, Freud interviewed his patients during therapy sessions, typically multiple sessions per week. The patients laid on a couch while Freud asked questions
and listened to the patients' responses. What was one of Freud's main contributions to
personality theory, and which method did he use?

A) The existence of archetypes and the c
ollective unconscious; case studies

B) The existence of archetypes and the collective unconscious; personality inventories

C) Personality is related to balance among the id, the ego, and the superego; personality inventories

D) Many individuals are plagued by inferiority complexes that can develop into psychological issues; case
studies