Is intelligence a single general ability or a set of many mental abilities?
This is the fundamental question that researchers try to answer in order to form a precise definition. There are many theories of intelligence and also many followers of these theories argue in what intelligence is. Scholars were interested since 18th century to understand and define intelligence. Today the most recent and prevailing definition that psychologists give of Intelligence is the ability to the environment adaptation. To give an example of this definition, imagine someone who finds a new job. The adaptation of his environment means that this person needs to learn his duties, to get special knowledge of his working place, to get new training and in general to absorb the skills that are required in order to do his job well. As the new broom is trying to adapt to his new job environment, he involves more of a mental ability. He needs to learn, memorize, experience and then apply all of his knowledge to his job. Thus he will learn through his experience and day by day he will be
