CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -An individual’s mental age is then divided by his chronological age and multiplied by 100, yielding an intelligence quotient (IQ). Thus, a subject whose mental and chronological ages are identical has an IQ of 100, or average intelligence.

Detailed explanation-2: -Intelligence quotient (IQ) refers to mental age (MA) expressed as a ratio of chronological age (CA) multiplied by 100. For IQ to remain stable, MA must increase with CA over time. This is true until around 18 years, when intellectual abilities are usually fully developed.

Detailed explanation-3: -The term ‘IQ’ was coined in 1912 by the psychologist William Stern in relation to the German term Intelligenzquotient. At that time, IQ was represented as a ratio of mental age to chronological age x 100. So, if an individual of 10 years of age had a mental age of 10, their IQ would be 100.

Detailed explanation-4: -The IQ of person is given by the formula, IQ=mc×100, where m is the mental age and c is the chromological age. If 80≤IQ≤140 for a group of 12-year children, find the range of their mental age.

Detailed explanation-5: -IQ 100 indicates that you have a median IQ, the average intelligence quotient ranges from 90 to 110, anything beyond 110 is considered as outstanding intellect or above average, and anything below 90 is labeled as dullness or borderline deficiency.