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In page Creativity:

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There are multiple theories accounting for their relationship, with there being three main theories.[citation needed] Threshold theory states that intelligence is a necessary, but not sufficient, condition for creativity, and that there is a moderate positive relationship between creativity and intelligence until IQ ~120.[2][3] Certification theory states that creativity is not intrinsically related to intelligence. Instead, individuals are required to meet the requisite level of intelligence in order to gain a certain level of education or work, which in turn offers the opportunity to be creative. In this theory, displays of creativity are moderated by intelligence.[4] Interference theory states, in contrast, that extremely high intelligence might interfere with creative ability.[5]