If we say the child has an IQ of 100, what does this means?
Correct answer: C. The mental age of the child is equal to his actual age.
- A. The performance of the child is below average.
- B. The performance of the child is above average.
- C. The mental age of the child is equal to his actual age.
- D. The performance of the child cannot be better.
Explanation
In the traditional IQ formula, IQ equals mental age divided by chronological age multiplied by 100. Therefore, an IQ of 100 indicates that mental age and actual age are equal, although modern IQ tests use standardized scores rather than this simple formula.
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Inventions and Discoveries covers the people, dates, principles and practical uses behind developments such as the wheel, printing press, telephone, electricity, radio, computer, internet, vaccines and space technology. It distinguishes an invention, which creates a device or process, from a discovery, which identifies something already present in nature.
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