Examlex
Provide an example of two-sided alternative hypotheses.
Preoperational
A stage in Piaget's theory of cognitive development, during which children aged 2 to 7 years old develop memory and imagination but do not yet think logically.
Preoperational Stage
A stage in Piaget's theory of cognitive development, occurring roughly between the ages of 2 and 7, marked by rapid language acquisition and symbolic thinking.
Age
A measure of the time an individual or object has existed, often used to describe developmental stages in humans.
Egocentrism
An important feature of preoperational thought: the inability to distinguish between one’s own and someone else’s perspective.
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