Which psychologist proposed the stages of cognitive development?
Jean Piaget
Jean Piaget proposed the theory of cognitive development, describing stages such as sensorimotor, pre-operational, concrete operational and formal operational.
| List-I | List-II |
| A. E. L. Thorndike | I. Observation |
| B. B. F. Skinner | II. Extinction |
| C. I. P. Pavlov | III. Law of effect |
| D. Bandura | IV. Shaping |