IQ

Oswald was a human genius with an IQ so high that it could not be measured. (COMIC: Children of the Evil Eye)

Luke Rattigan, another human genius, had an IQ of 174, which was considered "enormous". (TV: The Sontaran Stratagem)

When Miss Evangelista was uploaded to the Library Data Core, she theorised that a decimal point had shifted in her IQ. (TV: Forest of the Dead) Before then, she had been pleased to have the IQ of a plankton. (TV: Silence in the Library)

Miss Kizlet, using the technology of the Great Intelligence, had a tablet that was able to "hack" into, among other things, peoples' IQs. (TV: The Bells of Saint John)

Eve Morris had an IQ of 145. (AUDIO: The Gathering) Liz Shaw had an IQ of over 200. (PROSE: The Devil Goblins from Neptune) Melanie Bush had an IQ of 162. (PROSE: Business Unusual)