Board Thread:Questions and Answers/@comment-35766731-20180606011248/@comment-35204224-20180624203508

IQ doesn't have a whole lot to do with Level and I would definitely not say that Level 0s have under 85 IQ as there are some extremely intelligent scientists (like Kihara Amata or the ones in the group from the last episodes in Railgun S) that are Level 0. However it is true that most Level 5 Espers have very high calculation abilities but this is correlated to the level of their Personal Reality (it's explained a bit more in detail here: https://toarumajutsunoindex.wikia.com/wiki/Personal_Reality). Also high calculation ability doesn't necessarily mean high IQ. Accelerator is however an exception as he's shown to be very intelligent in general.