To put Lydia's mark in perspective, the top adult score in the Cattell III B test, which primarily tests verbal reasoning, is 161.

CNN: British 12-year-old smarter than Einstein, Hawking

Lydia Sebastian achieved the top score of 162 on Mensa's Cattell III B paper, suggesting she has a higher IQ than well-known geniuses Albert Einstein and Stephen Hawking.

CNN: British 12-year-old smarter than Einstein, Hawking