The term 'psyche parts' refers to the three components of Sigmund Freud's psychoanalytic theory of personality. These components are the id, ego, and superego. The id is the unconscious part of the psyche that is driven by instinctual needs and desires. The ego is the conscious part of the psyche that mediates between the demands of the id and the superego. The superego is the moral component of the psyche that is responsible for feelings of guilt and shame.