Why did the 1916 Stanford-Binet set an upper age limit?
A)Intelligence testing is needed only for school-age groups, not for adults.
B)The IQs of all persons above the maximum possible mental age would have been less than 100.
C)It was developed during World War I when men in their teens and twenties were being drafted.
D)Acceptable reliability and validity could not be established for individuals older than 16.

Question

Quizplus · Accepted Answer

The 1916 Stanford-Binet set an upper age limit because the IQs of all persons above the maximum possible mental age would have been less than 100, due to the way IQ was calculated at the time (mental age/chronological age x 100).

Why Did the 1916 Stanford-Binet Set an Upper Age Limit