Terman was an early pioneer of the IQ test, translating and adapting a French measure of children"s academic aptitude developed in the late 19th Century. The questions looked at a range of different abilities, such as vocabulary, mathematics and logical reasoning, which were, together, assumed to represent someone"s capacity for learning and abstract thinking. Terman then created tables of the average scores for each year group – against which he could compare any child"s results to identify their mental age. The IQ score was then calculated by dividing the mental age by the chronological age and multiplying this ratio by 100.