A major milestone refers to a significant achievement or development in a particular stage of cognitive development.
Related terms
Symbolic Representation: Symbolic representation is the ability to use one object or action to represent something else, such as pretending a stick is a sword.
Egocentrism is the tendency for children at this stage to see things only from their own perspective and struggle to understand others' viewpoints.
Centration: Centration refers to the tendency for children at this stage to focus on only one aspect of a situation while ignoring other relevant factors.