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Concrete Operations
A stage in cognitive development, according to Piaget, where children gain the ability to think logically about concrete events.
Preoperational Thought
A stage in cognitive development, according to Jean Piaget, where children aged 2-7 years are capable of using symbols and language but do not yet understand concrete logic.
Fluid Intelligence
Our ability to reason speedily and abstractly; tends to decrease during late adulthood.
Critical Period
A critical period is a specific time in an organism's development when it is particularly sensitive to environmental stimuli, and the absence of certain experiences can lead to irreversible consequences.
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