Examlex
Paul is elder than his brother Bryan. Their ages are consecutive integers whose product is 506. How old are Bryan and Paul?
Formal-Operational Thought
The stage in Jean Piaget's theory of cognitive development during which individuals develop the ability to think abstractly, logically, and systematically, typically beginning in adolescence.
Concrete-Operational Thought
A stage in cognitive development, as theorized by Piaget, where children can think logically about concrete events.
Symbolic Function
The ability to use symbols, signs, or objects to represent something that is not physically present.
Preoperational Thought
A stage in Jean Piaget's theory of cognitive development, occurring roughly between the ages of 2 and 7, characterized by symbolic thinking, egocentrism, and a lack of logical operations.
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