Cognitive development is the capability to think and understand. According to Piaget the four stages in cognitive development are:
1. Sensorimotor stage: This age starts from birth to 2 years of age. At this stage, the child learns through their senses.
2. Preoperational stage: This stage starts from 2 years and lasts up to 7 years of age. At this stage memory and imagination of a child develops. Here the child is egocentric in nature.
3. Concrete Operational Stage: This stage starts from 7 years and lasts up to 11 years. Egocentric thoughts diminish here. Operation thinking develops in this stage.
4. Formal operational stage: This stage starts from 11 years of age and above. At this stage, children develop the problem-solving ability and use of logic.