Correct Answer - Option 1 :
\(\frac{MA}{CA}\times 100\)
Intelligence Quotient is commonly known as IQ refers to the score of a standardized test that assesses and measures human intelligence.
- The first test to measure intelligence was developed by Binet and Simon in 1905.
-
Terman in 1916 revised the test and devised the concept of Intelligence Quotient.
- An individual’s Intelligence Quotient (IQ) is determined by the formula given below,
\({\bf{Intelligence}}\;{\bf{Quotient}}\;\left( {{\bf{IQ}}} \right) = \frac{{{\bf{Mental}}\;{\bf{Age}}\;\left( {{\bf{MA}}} \right)\;}}{{{\bf{Chronological}}\;{\bf{Age}}\;\left( {{\bf{CA}}} \right)}} \times 100\)
- Where, Mental Age is based on intellectual development.
- Chronological Age is the number of years a person has lived.
Hence, it could be concluded that \(\frac{MA}{CA}\times 100\) is the correct formula to calculate IQ.
| IQ Range |
Descriptive Label |
| Above 130 |
Very Superior Intelligence (gifted) |
| 120 to 129 |
Superior Intelligence |
| 110 to 119 |
High Average Intelligence |
| 90 to 109 |
Average Intelligence |
| 80 to 89 |
Low Average Intelligence |
| 71 to 79 |
Borderline Intellectual Functioning |
| 55 to 70 |
Mild Intellectual Disability |
| 40 to 54 |
Moderate Intellectual Disability |
| 25 to 39 |
Severe Intellectual Disability |
| Below 25 |
Profound Intellectual Disability |
