Question

select the correct answer.
what was psychologist william sterns contribution to the study of intelligence?
a. he created the first iq formula.
b. he revised the binet - simon intelligence scale to create the stanford - binet test.
c. he provided the original set of iq classifications.
d. he created a test to measure a persons emotional intelligence.

Explanation:

William Stern, a psychologist, is known for creating the first IQ formula. The formula was \( IQ=\frac{MA}{CA}\times100 \) (where \( MA \) is mental age and \( CA \) is chronological age).

• Option B: The Stanford - Binet test was revised by Lewis Terman, not William Stern.
• Option C: The original set of IQ classifications was not Stern's main contribution. His key work was the formula.
• Option D: The first tests for emotional intelligence were developed much later and not by Stern.

Answer:

A. He created the first IQ formula.