| Age | Phase (subphase) | Task |
|---|
| 0–1 mo | - Normal autism
| Basic needs fulfillment (for survival) |
| 1–5 mo | - Symbiosis
- Separation – individuation
| Awareness of external fulfillment source |
| 5–10 mo | – Differentiation | Commencement of separateness from mother figure |
| 10–16 mo | – Practicing | Locomotor independence; awareness of separateness of self |
| 16–24 mo | – Rapprochement | Acute separateness awareness; seeks emotional refueling from mother figure |
| 24–36 mo | – Consolidation | Established sense of separateness; internalizes sustained image of loved person/object when out of sight; separation anxiety resolution |