Part 5A was about Freud's structural theory of mind, involving the id, ego, and superego. The id is present at birth and is the source and repository of sexual and aggressive impulses (Schamess, 2011, p. 51). It causes negative impulses to occur when you do not get the satisfaction you seek (Schamess, 2011, p. 51). The superego, on the other hand, develops as moral beliefs and prohibitions within the brain (Schamess, 2011, p. 52). The superego tells the brain what behaviors are appropriate and causes it to think before acting to adapt to society. The ego maintains psychological organization and constancy (Schamess, 2011, p.54). The ego develops when a person is able to separate himself from other people (Robbins et al., 2011, p..