Question

If a 10-year-old girl has a mental age of 14, what is her IQ? Compute.

Hint:

The IQ formula compares mental age to chronological age and is used to assess intellectual development relative to age. A higher IQ indicates above-average intellectual functioning.

Answer 1

To calculate the IQ, we use the following formula:
\[ IQ = \left( \frac{\text{Mental Age}}{\text{Chronological Age}} \right) \times 100 \] Given that the mental age (MA) is 14 and the chronological age (CA) is 10, we can substitute the values into the formula:
\[ IQ = \left( \frac{14}{10} \right) \times 100 = 1.4 \times 100 = 140 \] Thus, the IQ of the 10-year-old girl with a mental age of 14 is **140**.