Sociocultural Theory - Lev Vygotsky

Behavioral Child Development - B. F. Skinner, Ivan Pavlov, and John B. Watson

Cognitive Development - Jean Piaget

Sensorimotor Stage

Pre-Operational Stage

Concrete Operational Stage

Formal Operational Stage

Social Learning Theory - Albert Bandura

Psychosexual Development - Sigmund Freud

Psychosocial Development - Erik Erikson

Stage 1: Trust vs. Mistrust

Stage 2: Autonomy vs. Shame and Doubt

Stage 3: Initiative vs. Guilt

Stage 4: Industry vs Inferiority

Stage 5: Identity vs. Confusion

Stage 6: Intimacy vs. Isolation

Stage 7: Generativity vs. Stagnation

Stage 8: Integrity vs. Despair