Examlex
White middle-class teenagers began to adopt the styles and mores of working-class youth after
Objects
Material items that can be seen and touched, and are distinguishable from ideas or thoughts.
Piaget
A Swiss psychologist renowned for his theories on cognitive development in children, positing stages through which children's thinking evolves from simple to complex structures.
Object Permanence
The understanding that objects continue to exist even when they cannot be observed (seen, heard, touched, smelled, or sensed in any way).
Practice
The repeated exercise or performance of an activity or skill so as to acquire or maintain proficiency in it.
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