How Many Stages Are There In Stage Theory?

How Many Stages Are There In Stage Theory? Stage Age Goal Sensorimotor Birth to 18–24 months old Object permanence Preoperational 2 to 7 years old Symbolic thought Concrete operational 7 to 11 years old Operational thought Formal operational Adolescence to adulthood Abstract concepts What are the stages of theory? Jean Piaget’s theory consists of four