Final answer:
Neo-Freudians diverged from Freud's theory primarily in the emphasis placed on sexual drives and conflicts; they introduced new concepts such as the collective unconscious, inferiority complex, and psychosocial development.
Step-by-step explanation:
Neo-Freudians agreed with Freud on several core concepts such as the importance of the unconscious, the division of the mind into id, ego, and superego, and the use of defense mechanisms. However, Neo-Freudians departed from Freud's ideas mainly on the emphasis on the sexual drives and conflicts as the primary motivators for human behavior.
Individuals such as Adler, Erikson, and Jung believed that other factors played significant roles in personality development and behavior. For instance, Jung proposed the idea of a collective unconscious and archetypes, Adler introduced the concept of an inferiority complex, and Erikson emphasized psychosocial development across the lifespan.