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Unformatted text preview: appears around 9 months. Preoperational 27 The child uses language and symbols, including letters and numbers. Egocentrism is also evident. Conservation marks the end of the preoperational stage and the beginning of concrete operations...
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This note was uploaded on 11/21/2011 for the course SOCI 101 taught by Professor Staff during the Fall '09 term at Texas State.
- Fall '09