Examlex
Eighteen-month-old babies display object permanence, but they also display the A-not-B error.
Conservation
Understanding that specific properties of objects remain the same despite changes in the object's form or appearance.
Egocentrism
A cognitive bias where an individual has difficulty understanding viewpoints different from their own.
Sensorimotor Stage
The earliest stage in Piaget's theory of cognitive development, lasting from birth to about age 2, where infants learn about the world primarily through sensory experiences and manipulating objects.
Formal Operational
The final stage in Piaget's theory of cognitive development, characterized by the ability to think abstractly, logically, and to carry out systematic planning.
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