In the context of child development, "constant over time" refers to the understanding that certain attributes or characteristics of objects or concepts remain the same even if their appearance or presentation changes.
Related terms
Conservation: The principle in cognitive development where children learn that quantity and other physical properties of objects remain the same despite changes in appearance.
Object Permanence: The understanding that an object continues to exist even when it cannot be seen or heard.
Egocentrism: A cognitive limitation where children struggle to take another person's perspective into account.