Erik Erikson developed an eight stage developmental model of the psyche for the full life of the human individual. Each stage has a key conflict (with both positive and negative sides), its resolution into a “virtue,” and the typical age range for that conflict.
- Trust vs. Mistrust, “Hope”, Infancy (0-1 years)
- Autonomy vs. Shame, “Will”, Early Childhood (1-3 years)
- Initiative vs. Guilt, “Purpose”, Play Age (3-5 years)
- Industry vs. Inferiority, “Competency” (or “Ability” or “Skill”), Schooling (5-12 years)
- Ego identity vs. Role confusion, “Fidelity”, Adolescence (12-18 years)
- Intimacy vs. Isolation, “Love”, Young Adult (18-40 years)
- Generativity vs. Stagnation, “Care”, Adulthood (40-65 years)
- Ego integrity vs. Despair, “Wisdom”, Old Age (65-? years)
I would think that these ages would depend significantly on cultural norms.
Further Reading:
https://en.wikipedia.org/wiki/Erikson%27s_stages_of_psychosocial_development
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