The question asks to identify the psychologist who proposed the 'Theory of Psycho-social development'. This influential theory outlines the stages of human development across the lifespan, emphasizing the social and cultural influences on the ego.
The proponent of the 'Theory of Psycho-social development' is Erik Erikson. He was a German-American developmental psychologist and psychoanalyst known for his influential theory on the psychosocial stages of human development.
Erikson proposed that personality develops through eight distinct stages across the entire life span. Each stage is characterized by a psychosocial crisis, a turning point that requires the individual to confront and resolve a particular conflict. Successfully navigating each crisis leads to the acquisition of a basic virtue or strength essential for that stage and later life.
| Stage Number | Psychosocial Crisis | Approximate Age Range | Key Virtue Acquired |
|---|---|---|---|
| 1 | Trust vs. Mistrust | Infancy (0 - 1.5 years) | Hope |
| 2 | Autonomy vs. Shame and Doubt | Early Childhood (1.5 - 3 years) | Will |
| 3 | Initiative vs. Guilt | Preschool (3 - 5 years) | Purpose |
| 4 | Industry vs. Inferiority | School Age (5 - 12 years) | Competence |
| 5 | Identity vs. Role Confusion | Adolescence (12 - 18 years) | Fidelity |
| 6 | Intimacy vs. Isolation | Young Adulthood (18 - 40 years) | Love |
| 7 | Generativity vs. Stagnation | Middle Adulthood (40 - 65 years) | Care |
| 8 | Ego Integrity vs. Despair | Late Adulthood (65+ years) | Wisdom |
Understanding Erikson's contribution is clearer when compared to the other notable psychologists mentioned in the options:
While all these theorists made significant contributions to understanding human development, Erikson's unique focus was on the lifelong journey of navigating social challenges and forming a sense of self within society.
Changes in emotion, self-perception and interpersonal relationships with families, peers and friends are studied under _________domain of development.