IQ Test History

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Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

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Question 1

Which French psychologist developed the first practical intelligence scale in 1905 with Théodore Simon?

Question 2

Who introduced the mathematical concept and formula for the 'Intelligence Quotient' (IQ) in 1912?

Question 3

Which Stanford University psychologist adapted Binet's test for American usage in 1916?

Question 4

Which English polymath and cousin of Charles Darwin pioneered the earliest quantitative attempts to measure intelligence in the 1880s?

Question 5

What two mass testing instruments were administered to 1.75 million American recruits during World War I?

Question 6

Which clinical psychologist developed the Wechsler Adult Intelligence Scale (WAIS) in 1939 to overcome Stanford-Binet limitations?

Question 7

What statistical construct was introduced by Charles Spearman in 1904 to describe general cognitive ability?

Question 8

What secular phenomenon describes the steady, worldwide rise in average raw IQ test scores observed across the 20th century?

Question 9

Which non-verbal intelligence assessment was developed by John C. Raven in 1936 to measure abstract reasoning independent of language?

Question 10

Which high-IQ society was founded in Oxford, England in 1946 by Roland Berrill and Lancelot Ware?

Which French psychologist developed the first practical intelligence scale in 1905 with Théodore Simon?