Question

Define IQ and explain how to calculate it using Mental Age (MA) and Chronological Age (CA).

Hint:

IQ = \( \frac{MA}{CA} \times 100 \)

Answer 1

Concept: Intelligence Quotient (IQ) is a numerical measure of a person's intellectual ability relative to their age group. It helps compare cognitive performance across individuals. Definition of IQ: IQ (Intelligence Quotient) is defined as the ratio of Mental Age (MA) to Chronological Age (CA), multiplied by 100. Formula: \[ \text{IQ} = \frac{\text{Mental Age (MA)}}{\text{Chronological Age (CA)}} \times 100 \] Explanation of Terms: Mental Age (MA):

Level of intellectual functioning 
Determined through intelligence tests 
Chronological Age (CA): 

Actual age of the person in years 
Example Calculation: If a child has: 

Mental Age = 12 years 
Chronological Age = 10 years 
\[ \text{IQ} = \frac{12}{10} \times 100 = 120 \] Interpretation: 

IQ = 100 → Average intelligence 
IQ > 100 → Above average 
IQ < 100 → Below average