The IQ test can be used for many reasons. It allows determining one's level of being able to learn, to understand, to form concepts, to process information, to apply logic and reason, in comparison to the population. It is indicative and can represent an influence on non-common characters that can be encountered in society, whether relational such as isolation, rejection or distance, or intellectual such as ease or difficulties encountered in intellectual activities. In another way, it can also explain successes acquired in ways easier than others by individuals.