Which is the case? IQ is calculated as:
Correct answer: B. The ratio of mental age to chronological age.
- A. The speed at which we process a piece of information.
- B. The ratio of mental age to chronological age.
- C. The number of items you get correct on an intelligence test.
- D. How intelligent you are compared to an adult of the same gender.
Explanation
In the original mental-age system, IQ was calculated as mental age divided by chronological age, multiplied by 100. Modern tests mainly use deviation IQ, but this question is asking for the historical ratio definition.
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