Terman's 1916 Stanford-Binet added the following improvement to the earlier scales:
A)an increase in the size of the standardization sample.
B)the age scale format.
C)the mental age concept.
D)the principle of age differentiation.

Question

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Terman's 1916 revision of the Binet-Simon scale, known as the Stanford-Binet Intelligence Scale, notably improved the scale by increasing the size of the standardization sample, which made the test more representative and reliable for assessing intelligence across different age groups in the U.S. population.

Terman's 1916 Stanford-Binet Added the Following Improvement to the Earlier