The concept of intelligence is an ancient concept originated by Philosopher Sithron, where the philosophers relied on the observation method in explaining intelligence. They followed self-introspection through their thinking processes or any other mental activities and wrote down opinions and observations. Psychology's definitions of intelligence differed according to the aspect dealt with, so scientists differed, in general, on the elements of its definition. Some define it according to its composition and structure, and others according to its job and tasks. This course is delivered in Arabic.