Question

Originally, IQ was defined as:

1) mental age divided by chronological age and multiplied by 100.
2) chronological age divided by mental age and multiplied by 100.
3) mental age subtracted from chronological age and multiplied by 100.
4) chronological age subtracted from mental age and multiplied by 100.

Answer 1

IQ was initially defined as the mental age divided by chronological age, then multiplied by 100.

Step-by-step explanation:

Originally, IQ, which stands for intelligence quotient, was defined as mental age divided by chronological age and multiplied by 100. This formula was developed to measure intelligence as a score obtained through IQ tests. Alfred Binet and Theodore Simon developed the concept in the early 20th century, which was further refined by Lewis Terman at Stanford University, becoming the Stanford-Binet Intelligence Scales. This definition was later modified and replaced by other methods of calculating IQ. It is important to note that IQ tests have been the subject of debate and controversy throughout their development and use.