Piaget's Stages of Cognitive Development: This term refers to Jean Piaget's theory that describes four stages of cognitive development in children based on their ability to think and reason.
Erikson's Psychosocial Stages: This term refers to Erik Erikson's theory that describes eight stages of psychosocial development across the entire lifespan.
Attachment Theory: This term explains the emotional bond formed between infants and their caregivers during early childhood, influencing later relationships and socioemotional development.