The term I.Q. Test Pioneer refers to Alfred Binet, a French psychologist who developed the first intelligence test in 1905. Binet was a pioneer in the field of psychology and his work laid the foundation for modern intelligence testing. He believed that intelligence was not fixed, but could be improved through education and training. His test was designed to measure a person's mental age, which was used to determine their overall intelligence. Binet's work has had a lasting impact on the field of psychology and is still used today.