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10 March, 06:12

Child X's mental age is 15, and his actual age is 12.

What is his IQ (as defined by Stern) on a standard Binet-Simon exam?

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  1. 10 March, 06:20
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    125

    Explanation:

    Stern define IQ with the formula 100 (mental age / chronological age)

    100 (15 / 12) = 125 with the range of 120 - 129 defined as Superior by Stanford Binet-Simon fifth edition
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