Separation-Individuation (5-24 months)
1. Child develop a sense of self, separated from the mother
2. In separation, the infant develops an understanding of boundaries of the self
3. Individuation marks the development of a sense of self
4. Differentiation: occurs when the child first gains awareness that he or she is separate from the mother (5-10 months)
5. Practicing: occurs when child becomes toddler, gaining motor skills that enable the child to explore the world independently from his or her caregivers (10-16/18 months)
6. Rapprochement: "backing off" from separation, the child becomes anxious about separation from his mother and regains closeness (18-24 months)
7. Object Constancy: development of an internalized mental model of the mother, which unconsciously accompanies and supports the child even when they are physically separated (24+ months)