Examlex
A pay-as-you-go system means
Concrete Operations
A stage in Piaget's theory of cognitive development, occurring between ages 7 and 11, where children gain a better understanding of mental operations and can think logically about concrete events.
Stimulus
Any external or internal event or factor that influences or triggers a reaction in a biological organism.
Cognitive Development
The process of growth and change in intellectual/mental abilities such as thinking, reasoning, and understanding over the course of a person's life.
Concrete Operations
A stage in cognitive development, according to Piaget, where children gain the ability to think logically about concrete events and understand the concept of conservation.
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