A child's growth is divided into different stages. A child is developing concrete operations (mental state) when they begin to understand that other people have thoughts, emotions, and perceptions.
Perceptions, emotions, and desires are all mental states that children from 18 months to 3 years of age start to understand.
Cognitive development is known as the growth of a child's ability to think and reason. This growth often takes place differently from ages 6 to 12, and from ages 12 to 18.
Children ages 6 to 12 years old develop the ability to think in concrete ways. These are called concrete operations.
Piaget’s theory of cognitive development is a theory about the nature and creation of human intelligence.
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