Question

For the original version of the Stanford-Binet, IQ was defined as
A. mental age divided by chronological age and multiplied by 100.
B. chronological age subtracted from mental age and multiplied by 100.
C. chronological age divided by mental age and multiplied by 100.
D. mental age multiplied by 100.

Answer 1

Answer:

The answer is A.

Explanation:

This intelligence test was originally created by french psychologist Alfred Binet in 1905. The results are taken based on the average performance for a certain chronological age. This means that if the mental age of a person is the same as his chronological age, the results should equal 100; at the same time, this means any score over 100 is above average.

For example, if a 10 year old kid has a mental age of 12, we divide 12/10 = 1.2, which multiplied by 100 equals 120 IQ points.