AP PSYCHOLOGY

Detailed explanation-1: -Mental age refers to the calculation of intelligence that shows how individual child is performing according to their age. It is based on intellectual development. The concept of ‘Mental age’ was introduced by Alfred Binet, a French psychologist.

Detailed explanation-2: -From Binet’s work, the phrase “intelligence quotient, ” or “IQ, ” entered the vocabulary. The IQ is the ratio of “mental age” to chronological age, with 100 being average. So, an 8 year old who passes the 10 year-old’s test would have an IQ of 10/8 x 100, or 125.

Detailed explanation-3: -Mental age was first defined by the French psychologist Alfred Binet, who introduced the intelligence test in 1905.

Detailed explanation-4: -The most basic tenet of Alfred Binet’s theory is that intelligence can be defined by the comparison of the performance of children at the same idea. The concept is that there are certain tasks that most six-year-olds can complete. Binet asserted that children who could not complete those tasks were below average.

Detailed explanation-5: -Alfred Binet (French: [binɛ]; 8 July 1857 – 18 October 1911), born Alfredo Binetti, was a French psychologist who invented the first practical IQ test, the Binet–Simon test.