Correct Answer - Option 1 : 12
Intelligence refers to a set of different cognitive abilities to think rationally, act purposefully, resolve problems, and deal with the demands of the environment.
- In 1912, William Stern suggested the concept called Intelligent Quotient (IQ). It refers to the score of a standardized test that assesses and measures human intelligence.
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.
- When A child of 16 years scores 75, his mental age will be:
- 75 = MA / 16 x 100
- MA = 75 x 16 /100
- MA = 12
Hence, it could be concluded that a child of 16 years scores 75 in an IQ test, his mental age will be 12 years.
Refer to the IQ table for further information:
IQ Classification
|
IQ Range
|
Genius
|
140 and above
|
Very superior
|
130-139
|
Superior
|
120-129
|
Above-average
|
110-119
|
Average
|
90-109
|
Below average
|
80-89
|
Dull or borderline
|
70-79
|
Feebleminded, Moron
|
50-69
|
Imbecile
|
25-49
|
Idiot
|
0-24
|