Who was the first person to invent IQ tests and what were they based

The concept of Intelligence Quotient or IQ was developed by iq formula given by terman Unlike, for example, distance and mass, a concrete measure of intelligence cannot be achieved given the abstract nature of the concept of intelligence IQ iq calculation formula 90-100 is considered as Average Intelligence An individual's Intelligence Quotient is determined by the formula given below,; Intelligence

iqra hasan wiki In Lewis Terman's modification of William Stern's formula for calculating the value of intelligence quotient , a person's mental age is divided by