Théodore Simon

French psychologist

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July 16, 2026

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Théodore Simon was a French psychologist who, along with Alfred Binet, developed the Binet-Simon scale. This intelligence test was originally designed to assess children's cognitive abilities, with tasks graded from the level of an average 3-year-old to that of an average 12-year-old, and was later extended in range. Binet, a prominent figure in French experimental psychology, focused on measuring intelligence and higher mental processes, moving away from simpler sensory tests. The Binet-Simon scale was a foundational development in the field of intelligence testing.123

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Alfred Binet
…1905 and 1911 he and Théodore Simon developed highly influential scales for the measurement of intelligence of children. Binet also published works on suggestibility (1900) and hysteria (1910) and was working on a revision of his scales at the time of his death.
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…1905 and 1911 he and Théodore Simon developed highly influential scales for the measurement of intelligence of children. Binet also published works on suggestibility (1900) and hysteria (1910) and was working on a revision of his scales at the time of his death.
Read More