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Inefficient use of resources is shown on the production possibilities curve
Object Permanence
The understanding that objects continue to exist even when they cannot be seen, heard, or touched, typically developed during infancy.
Secondary Circular Reactions
Repetitive actions in infants aged 4-8 months, centered around the infant's own body, demonstrating the beginning of intentionality.
Primary Circular Reactions
A concept in child development where an infant learns to reproduce an event that initially occurred by accident (e.g., sucking their thumb).
Centration
A cognitive limitation in early childhood, where a child focuses on one aspect of a situation while ignoring others.
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