Based on IQ score as described by Stern, a student with an IQ score of 120 is likely to answer IQ test questions like someone who is age _____, even though the student is _____
A) 10; 12
B) 12; 11
C) 10; 8
D) 12; 10
Answer: D
Rationale: The original formula for calculating the intelligence quotient (IQ) was mental age ? chronological age ? 100. Using this equation, a 10-year-old with a mental age of 12 would have an IQ of 120, (12 ? 10) = 1.2; 1.2 ? 100 = 120.
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