Examlex
Process of Science: Our theory of solar system formation suggests that larger planets cool more slowly than small ones.What does this suggest regarding geologic activity on Venus? Do we expect Venus to be geologically active? How did scientists test this hypothesis?
Preoperational
The second stage in Piaget's theory of cognitive development, occurring roughly between the ages of 2 and 7, characterized by symbolic thinking, egocentrism, and difficulty understanding conservation.
Concrete Operational
A stage of cognitive development in Piaget's theory, occurring roughly between the ages of 7 and 11, during which children gain a better understanding of mental operations and can think logically about concrete events.
Formal Operational
The stage in Piaget's theory of cognitive development during which people begin to think logically about abstract concepts and hypothetical situations.
Egocentrism
The inability to differentiate between self and others, often leading to viewing things exclusively from one's own perspective.
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