[Solved] The SDLC is an acronym for the Systems Development Life Cycle. Anal Stage: A phase in Freud's psychosexual development theory where pleasure is focused on the anal region and issues around control and order arise. Erotic Feelings: Emotions and sensations associated with sexual attraction and desire. Psychosexual Development: A Freudian concept describing how personality develops through stages centered on erogenous zones. Oedipus Complex: A phase in Freudian psychology where a child feels desire for the parent of the opposite sex and jealousy toward the parent of the same sex.