Jacques Lacan developed the psychoanalytic concepts of the imaginary, symbolic, and real orders based on Sigmund Freud's theories of the id, ego, and superego. The imaginary order begins to form during the "mirror stage" between 6-18 months when infants recognize their reflections as separate identities. This realization of being distinct from the mother causes anxiety and a desire to regain unity. The symbolic order then develops as children learn rules and language, shaping their desires through communication and society's influence. These orders develop alongside one another and influence a person's identity and behavior.