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Piaget's stage theory consists of four distinct stages.
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First, the sensory motor, then pre -operational, next concrete operational, and finally formal operational.
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The sensory motor stage includes awareness of the environment, refluxes, full -directed behaviors, exploration, and the development of object permanence.
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The pre -operational period includes language, imagination, symbolic thought, intuition, and egocentrism.
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The concrete operational stage includes realistic and tangible reasoning and accomplishments such as the ability to conserve.
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Formal operational thought is piersier's final stage that includes abstract thinking and systematic logic...