Question
Psychology Question on Psychological attributes
Who devised the concept of Intelligence Quotient (IQ)?
A
Alfred Binet
B
Theodore Simon
C
William Stern
D
Lewis Terman
Answer
William Stern
Explanation
Solution
The concept of Intelligence Quotient (IQ) was devised by William Stern in the early 20th century. He defined IQ as the ratio of mental age to chronological age, multiplied by 100. Although Alfred Binet and Theodore Simon developed the first standardized intelligence test, it was Stern who introduced the term “Intelligence Quotient” to quantify intellectual performance.