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The most important transformations of human society have been the result of:
Egocentrism
The inability to differentiate between one's own perspective and someone else's perspective.
Concrete Operational
A stage in Piaget's theory of cognitive development, from about 7 to 11 years of age, where children can use logic to solve problems but still struggle with abstract and hypothetical concepts.
Piaget's Stages
the theory proposed by Jean Piaget that outlines the four stages of cognitive development in children: sensorimotor, preoperational, concrete operational, and formal operational.
Conservation
A cognitive ability, identified by Piaget, that enables a child to understand that substances remain the same in quantity even when their shapes change.
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