Examlex
If an increase in quantity demanded of a product reduces the quantity demanded of another, then the two goods are said to be substitutes.
Object Permanence
The understanding that objects continue to exist even when they cannot be seen, heard, or otherwise sensed, a crucial developmental milestone in infants.
Symbolic Thought
The ability to use symbols, language, or objects to represent something that is not physically present, a key aspect of human language and cognition.
Object Permanence
The understanding that objects continue to exist even when they cannot be observed, a cognitive development milestone typically achieved in infancy.
Representational Ability
The cognitive skill to understand and manipulate symbols and abstract concepts, pivotal in language development and creative thinking.
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