INTERNAL BOUNDARY By Nugent, Pam M.S. - May 11, 2013 Psychoanalytic theory. The name of the boundary between ego and id. Also called inner boundary. Compare external boundary. INTERNAL BOUNDARY: "Internal boundary is between the id and ego." Related Psychology Terms EXTERNAL BOUNDARY BOUNDARY SYSTEM DECATHEXIS BOUNDARY SYSTEM SITUATIONAL ATTRIBUTION EGO BOUNDARY INTERNAL FRUSTRATION INTROJECTION INTERNAL INEQUITY SEXUAL OBJECT Cite this page: Nugent, Pam M.S., "INTERNAL BOUNDARY," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/internal-boundary/ (accessed January 19, 2019).