The idea of summarizing the result of children's intelligence test results by a "quotient," the ratio of mental age to chronological age,was first proposed by whom?
A) William Stern
B) Lewis Terman
C) Theodore Simon
D) Charles Spearman

Question

Quizplus · Accepted Answer

William Stern, a German psychologist, first proposed the concept of IQ or Intelligence Quotient in 1912, which is calculated as the ratio of a child's mental age to their chronological age. This concept was later popularized by Lewis Terman in the United States, who developed the first standardized intelligence test, the Stanford-Binet Intelligence Scale.

The Idea of Summarizing the Result of Children's Intelligence Test