By changing the number of items in Piaget's conservation test, subsequent researchers found that __________.
A. young children make even more preoperational errors than Piaget thought
B. older children were worse than younger children when it comes to preoperational errors
C. young children make fewer preoperational errors than Piaget thought
D. young children made no preoperational errors
Answer: C
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Who is LEAST likely to have a chromosomal abnormality?
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________ is the degree to which an assessment procedure actually measures the variable under consideration
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