Alfred BINET 8 June 1857 – 8 October 1911

French Psychologist and Physician. He created the Stanford Binet Intelligence Scale. In his researches and practices, he focused on the development of education and focused his studies on children with mental difficulties. Together with Theodore Simon, he prepared an intelligence scale for children aged 3-13. The test consisted of 30 problems ranked from easy to difficult and focused on 3 cognitive functions; Judgement - Understanding - Reasoning. The test was revised and expanded 3 years later, and the concept of Mental Age emerged. Simon and Binet described the mental age as the age at which average gifted children could perform certain tasks. After Binet's death, the test was called Binet - Simon Intelligence Test.