oped the first intelligence test, the Binet-Simon Scale, to assess children's mental age compared to thei... on with Theodore Simon, developed the Binet-Simon Scale, which was the first intelligence test designed to measure a child's mental age. The scale consisted of a series of tasks and questions of i... d special education.
Binet and Simon revised the scale multiple times between 1905 and 1911, expanding i
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==== Grit ====
Duckworth developed the Grit Scale, a questionnaire that assesses these two factors,... United States Military Academy's use of the Grit Scale in a 2007 study. In its initial version, the Grit Scale was a 12-item, 5-point Likert-type survey that as